	Prof. Dr. rer. nat. Uli Lemmer
	Institutsleitung Leitung der Abteilung Optoelektronik Raum: 223 Tel.: +49 721 608-42530 Fax: +49 721 608-42590 uli lemmerTbg7∂kit edu	Engesserstrasse 13, Geb. 30.34 76131 Karlsruhe

aktuelle Veranstaltungen
Titel	Typ
Lichttechnisches Kolloquium und Seminar	Kolloquium (KOL)
Lineare Elektrische Netze - Workshop A	Praktikum (P)
Praktikum Nanotechnologie	Praktikum (P)
Anleitung zu selbständigen wissenschaftlichen Arbeiten	Seminar (S)
Sprechstunde Prof. Lemmer	Sprechstunde (Sprechst.)
Polymerelektronik/ Plastic Electronics	Vorlesung (V)

Weitere Aufgaben

Laserschutzbeauftragter des LTI
Modellberater des Studienmodells 18 "Regenerative Energien"

Lebenslauf und Veröffentlichungen

Uli Lemmer received the diploma degree in physics from RWTH Aachen University in 1990 and a Ph.D. from the University of Marburg in 1995. From 1995 to 1996, he held a postdoctoral position with the University of California at Santa Barbara. He was with the University of Munich from 1996 to 2002. In 2002, he was appointed a full Professor and director of the Light Technology Institute, Karlsruhe Institute of Technology (KIT). Since 2006 he is also the coordinator of the Karlsruhe School of Optics & Photonics (KSOP) and he is also heading the device physics competence center within the InnovationLab in Heidelberg. His research interests are in the technology and the applications of printable organic and inorganic semiconductors.

Gesamtliste der Veröffentlichungen

Publikationen

2019

Drying Dynamics of Solution‐Processed Perovskite Thin‐Film Photovoltaics: In Situ Characterization, Modeling, and Process Control [in press].
Ternes, S.; Börnhorst, T.; Schwenzer, J. A.; Hossain, I. M.; Abzieher, T.; Mehlmann, W.; Lemmer, U.; Scharfer, P.; Schabel, W.; Richards, B. S.; Paetzold, U. W.
2019. Advanced energy materials, Article no: 1901581. doi:10.1002/aenm.201901581

Perovskite Solar Cells: Record Open‐Circuit Voltage Wide‐Bandgap Perovskite Solar Cells Utilizing 2D/3D Perovskite Heterostructure.
Gharibzadeh, S.; Abdollahi Nejand, B.; Jakoby, M.; Abzieher, T.; Hauschild, D.; Moghadamzadeh, S.; Schwenzer, J. A.; Brenner, P.; Schmager, R.; Haghighirad, A. A.; Weinhardt, L.; Lemmer, U.; Richards, B. S.; Howard, I. A.; Paetzold, U. W.
2019. Advanced energy materials, 9 (21), 1970079. doi:10.1002/aenm.201970079

Efficient All-Evaporated pin-Perovskite Solar Cells: A Promising Approach Toward Industrial Large-Scale Fabrication [in press].
Abzieher, T.; Schwenzer, J. A.; Moghadamzadeh, S.; Sutterluti, F.; Hossain, I. M.; Pfau, M.; Lotter, E.; Hetterich, M.; Richards, B. S.; Lemmer, U.; Powalla, M.; Paetzold, U. W.
2019. IEEE journal of photovoltaics. doi:10.1109/JPHOTOV.2019.2920727

Perovskite Micro Laser arrays using Scalable Lithography: Towards Integrated Perovskite Photonics.
Bar-On, O.; Brenner, P.; Lemmer, U.; Scheuer, J.
2019. CLEO: Science and Innovations : part of CLEO: 2019 : 5-10 May 2019, San Jose, California, United States, SF2J.2, OSA, Washington, D.C. doi:10.1364/CLEO_SI.2019.SF2J.2

Continuous Wave Amplified Spontaneous Emission from Mixed Cation Perovskite devices.
Brenner, P.; Bar-On, O.; Jakoby, M.; Allegro, I.; Richards, B. S.; Paetzold, U. W.; Howard, I. A.; Scheuer, J.; Lemmer, U.
2019. Conference on Lasers and Electro-Optics, JTu2A.71, OSA, Washington, D.C. doi:10.1364/CLEO_AT.2019.JTu2A.71

Roll‐to‐Roll Hot Embossing of 1D and 2D Photonic Nanostructures.
Habermehl, A.; Brenner, P.; Huber, R.; Mertens, A.; Winkler, F.; Hahn, L.; Guttmann, M.; Eschenbaum, C.; Lemmer, U.
2019. Advanced engineering materials, 21 (8), Article: 1900110. doi:10.1002/adem.201900110

Enhanced Photoluminescence in Quantum Dots–Porous Polymer Hybrid Films Fabricated by Microcellular Foaming.
Yu, S.; Fritz, B.; Johnsen, S.; Busko, D.; Richards, B. S.; Hippler, M.; Wiegand, G.; Tang, Y.; Li, Z.; Lemmer, U.; Hölscher, H.; Gomard, G.
2019. Advanced optical materials, Article no: 1900223. doi:10.1002/adom.201900223

Methodology of energy yield modelling of perovskite-based multi-junction photovoltaics.
Schmager, R.; Langenhorst, M.; Lehr, J.; Lemmer, U.; Richards, B. S.; Paetzold, U. W.
2019. Optics express, 27 (8), A507-A523. doi:10.1364/OE.27.00A507

Record Open‐Circuit Voltage Wide‐Bandgap Perovskite Solar Cells Utilizing 2D/3D Perovskite Heterostructure.
Gharibzadeh, S.; Abdollahi Nejand, B.; Jakoby, M.; Abzieher, T.; Hauschild, D.; Moghadamzadeh, S.; Schwenzer, J. A.; Brenner, P.; Schmager, R.; Haghighirad, A. A.; Weinhardt, L.; Lemmer, U.; Richards, B. S.; Howard, I. A.; Paetzold, U. W.
2019. Advanced energy materials, 9 (21), Article: 1803699. doi:10.1002/aenm.201803699

Comparative Study of Printed Multilayer OLED Fabrication through Slot Die Coating, Gravure and Inkjet Printing, and Their Combination.
Merklein, L.; Daume, D.; Braig, F.; Schlisske, S.; Rödlmeier, T.; Mink, M.; Kourkoulos, D.; Ulber, B.; Di Biase, M.; Meerholz, K.; Hernandez-Sosa, G.; Lemmer, U.; Sauer, H.; Dörsam, E.; Scharfer, P.; Schabel, W.
2019. Colloids and interfaces, 3 (1), 32. doi:10.3390/colloids3010032

Coated and Printed Perovskites for Photovoltaic Applications.
Howard, I. A.; Abzieher, T.; Hossain, I. M.; Eggers, H.; Schackmar, F.; Ternes, S.; Richards, B. S.; Lemmer, U.; Paetzold, U. W.
2019. Advanced materials, 1806702. doi:10.1002/adma.201806702

Simulation and design of folded perovskite x-ray detectors.
Mescher, H.; Hamann, E.; Lemmer, U.
2019. Scientific reports, 9 (1), Article no: 5231. doi:10.1038/s41598-019-41440-6

Novel hybrid organic-inorganic perovskite detector designs based on multilayered device architectures: simulation and design.
Mescher, H.; Lemmer, U.
2019. Medical Imaging 2019: Physics of Medical Imaging, San Diego, California, United States, 16-21 February 2019, 31, SPIE, Bellingham, WA. doi:10.1117/12.2511739

Continuous wave amplified spontaneous emission in phase-stable lead halide perovskites.
Brenner, P.; Bar-On, O.; Jakoby, M.; Allegro, I.; Richards, B. S.; Paetzold, U. W.; Howard, I. A.; Scheuer, J.; Lemmer, U.
2019. Nature Communications, 10 (1), Article-Nr.: 988. doi:10.1038/s41467-019-08929-0

Electron-Beam-Evaporated Nickel Oxide Hole Transport Layers for Perovskite-Based Photovoltaics.
Abzieher, T.; Moghadamzadeh, S.; Schackmar, F.; Eggers, H.; Sutterlüti, F.; Farooq, A.; Kojda, D.; Habicht, K.; Schmager, R.; Mertens, A.; Azmi, R.; Klohr, L.; Schwenzer, J. A.; Hetterich, M.; Lemmer, U.; Richards, B. S.; Powalla, M.; Paetzold, U. W.
2019. Advanced energy materials, 9 (12), Article no 1802995. doi:10.1002/aenm.201802995

Microlens arrays with adjustable aspect ratio fabricated by electrowetting and their application to correlated color temperature tunable light-emitting diodes.
Chen, J.; Fritz, B.; Liang, G.; Ding, X.; Lemmer, U.; Gomard, G.
2019. Optics express, 27 (4), A25-A38. doi:10.1364/OE.27.000A25

Scalable Processing of Low-Temperature TiO₂ Nanoparticles for High-Efficiency Perovskite Solar Cells.
Hossain, I. M.; Hudry, D.; Mathies, F.; Abzieher, T.; Moghadamzadeh, S.; Rueda-Delgado, D.; Schackmar, F.; Bruns, M.; Andriessen, R.; Aernouts, T.; Di Giacomo, F.; Lemmer, U.; Richards, B. S.; Paetzold, U. W.; Hadipour, A.
2019. ACS applied energy materials, 2 (1), 47–58. doi:10.1021/acsaem.8b01567

2018

Towards nano-patterned perovskite layers for enhanced absorption in solar cells.
Schmager, R.; Abzieher, T.; Brenner, P.; Assadillayev, A.; Lee, D. J.; Moghadamzadeh, S.; Hossain, I. M.; Lemmer, U.; Richards, B. S.; Paetzold, U. W.
2018. 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018; Waikoloa Village; United States; 10 June 2018 through 15 June 2018, 15–17, IEEE, Piscataway (NJ). doi:10.1109/PVSC.2018.8548029

Towards Inexpensive and Stable All-Evaporated Perovskite Solar Cells for Industrial Large-Scale Fabrication.
Abzieher, T.; Schwenzer, J. A.; Sutterlüti, F.; Pfau, M.; Lotter, E.; Het-Terich, M.; Lemmer, U.; Powalla, M.; Paetzold, U. W.
2018. 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018; Waikoloa Village; United States; 10 June 2018 through 15 June 2018, 2803–2807, IEEE, Piscataway (NJ). doi:10.1109/PVSC.2018.8547364

Inkjet Printed Perovskite Photovoltaics.
Mathies, F.; Richards, B. S.; Hernandez-Sosa, G.; Lemmer, U.; Paetzold, U. W.
2018. 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018; Waikoloa Village; United States; 10 June 2018 through 15 June 2018, 1721–1723, IEEE, Piscataway (NJ). doi:10.1109/PVSC.2018.8548265

Correction: Correlation of device performance and fermi level shift in the emitting layer of organic light-emitting diodes with amine-based electron injection layers (ACS Applied Materials and Interfaces (2018) 10:10 (8877-8884) DOI: 10.1021/acsami.7b16352).
Stolz, S.; Petzoldt, M.; Lemmer, U.; Bunz, U. H. F.; Hamburger, M.; Hernandez-Sosa, G.; Mankel, E.
2018. ACS applied materials & interfaces, 10 (34), 29187. doi:10.1021/acsami.8b09792

Design and Color Flexibility for Inkjet-Printed Perovskite Photovoltaics.
Schlisske, S.; Mathies, F.; Busko, D.; Strobel, N.; Rödlmeier, T.; Richards, B. S.; Lemmer, U.; Paetzold, U. W.; Hernandez-Sosa, G.; Klampaftis, E.
2018. ACS applied energy materials, 2 (1), 764–769. doi:10.1021/acsaem.8b01829

Energy yield of all thin-film perovskite/CIGS tandem solar modules.
Langenhorst, M.; Sautter, B.; Schmager, R.; Lehr, J.; Ahlswede, E.; Powalla, M.; Lemmer, U.; Richards, B. S.; Paetzold, U. W.
2018. Progress in photovoltaics, 27 (4), 290–298. doi:10.1002/pip.3091

Non-Fullerene-Based Printed Organic Photodiodes with High Responsivity and Megahertz Detection Speed.
Strobel, N.; Seiberlich, M.; Rödlmeier, T.; Lemmer, U.; Hernandez-Sosa, G.
2018. ACS applied materials & interfaces, 10 (49), 42733–42739. doi:10.1021/acsami.8b16018

Stable Perovskite Solar Cell Architectures: Robustness against Temperature Variations Under Real World Conditions.
Schwenzer, J. A.; Rakocevic, L.; Abzieher, T.; Rueda-Delgad, D.; Gehlhaar, R.; Richards, B. S.; Lemmer, U.; Paetzold, U. W.
2018. 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC), 2816–2819, IEEE, Piscataway (NJ). doi:10.1109/PVSC.2018.8547781

Sequence-definition in stiff conjugated oligomers.
Schneider, R. V.; Waibel, K. A.; Arndt, A. P.; Lang, M.; Seim, R.; Busko, D.; Bräse, S.; Lemmer, U.; Meier, M. A. R.
2018. Scientific reports, 8 (1), Article number:17483. doi:10.1038/s41598-018-35933-z

Energy Yield Modelling of Wide Bandgap Perovskite-Based Tandem Solar Modules.
Langenhorst, M.; Lehr, J.; Sautter, B.; Schmager, R.; Lemmer, U.; Richards, B.; Paetzold, U. W.
2018. Optics for Solar Energy, Singapore, 5–8 November 2018, OW5C.3/1–2, OSA, Washington, D.C. doi:10.1364/OSE.2018.OW5C.3

Realization of Colors and Patterns for Inkjet-Printed Perovskite Solar Cells.
Schlisske, S.; Mathies, F.; Busko, D.; Strobel, N.; Rödlmeier, T.; Lemmer, U.; Paetzold, U. W.; Hernandez-Sosa, G.; Klampaftis, E.; Richards, B. S.
2018. Optics and Photonics for Energy and the Environment, Singapore, 5–8 November 2018, JM4A.6, OSA, Washington, D.C. doi:10.1364/EE.2018.JM4A.6

Energy yield modelling of perovskite/silicon two-terminal tandem PV modules with flat and textured interfaces.
Lehr, J.; Langenhorst, M.; Schmager, R.; Kirner, S.; Lemmer, U.; Richards, B. S.; Case, C.; Paetzold, U. W.
2018. Sustainable energy & fuels, 2018 (2), 2754–2761. doi:10.1039/C8SE00465J

Fabrication of nanostructured polymers by laser-assisted hot embossing for biological and optical applications.
Rakebrandt, J.-H.; Besser, H.; Habermehl, A.; Guttmann, M.; Wissmann, M.; Eschenbaum, C.; Lemmer, U.; Seifert, H. J.; Pfleging, W.
2018. Proceedings of the 18th International Conference of the European Society for Precision Engineering and Nanotechnology, Venice, I, June 4-8, 2018, 289–290, euspen

Rigorous wave-optical treatment of photon recycling in thermodynamics of photovoltaics: Perovskite thin-film solar cells.
Abebe, M. G.; Abass, A.; Gomard, G.; Zschiedrich, L.; Lemmer, U.; Richards, B. S.; Rockstuhl, C.; Paetzold, U. W.
2018. Physical review / B, 98 (7), Article: 075141. doi:10.1103/PhysRevB.98.075141

Comparing roll-to-roll and laser-assisted hot embossing for micro- and nanofabrication.
Habermehl, A.; Rakebrandt, J.-H.; Brenner, P.; Huber, R.; Mertens, A.; Guttmann, M.; Winkler, F.; Pfleging, W.; Eschenbaum, C.; Lemmer, U.
2018. Nanoengineering: Fabrication, Properties, Optics, and Devices XV, San Diego, CA, August, 19-23, 2018, 13, SPIE, Bellingham, WA. doi:10.1117/12.2321187

Towards mass fabrication of hot embossed plant surface texture replicas as photovoltaic cover layers.
Fritz, B.; Guttmann, M.; Casas Soler, P.; Roslizar, A.; Langenhorst, M.; Schneider, M.; Paetzold, U. W.; Richards, B. S.; Lemmer, U.; Huenig, R.; Gomard, G.
2018. SPIE Nanoscience + Engineering - Nanoengineering: Fabrication, Properties, Optics, and Devices XV, San Diego, United States, USA,19–23 August 2018. Ed.: B. Panchapakesan, 107300J-1–17, SPIE, Bellingham (WA). doi:10.1117/12.2320555

Micro Lasers by Scalable Lithography of Metal-Halide Perovskites.
Bar-On, O.; Brenner, P.; Lemmer, U.; Scheuer, J.
2018. Advanced materials technologies, 3 (12), Article: 1800212. doi:10.1002/admt.201800212

Role of packing density and spatial correlations in strongly scattering 3D systems.
Pattelli, L.; Egel, A.; Lemmer, U.; Wiersma, D. S.
2018. Optica, 5 (9), 1037–1045. doi:10.1364/OPTICA.5.001037

Substrate-Independent Surface Energy Tuning via Siloxane Treatment for Printed Electronics.
Schlisske, S.; Held, M.; Rödlmeier, T.; Menghi, S.; Fuchs, K.; Ruscello, M.; Morfa, A. J.; Lemmer, U.; Hernandez-Sosa, G.
2018. Langmuir, 34 (21), 5964–5970. doi:10.1021/acs.langmuir.8b00304

Solubility Modulation of Polyfluorene Emitters by Thermally Induced (Retro)-Diels–Alder Cross-Linking of Cyclopentadienyl Substituents.
Ahrens, L.; Schlisske, S.; Strunk, K.-P.; Hinkel, F.; Melzer, C.; Bunz, U. H. F.; Lemmer, U.; Hernandez-Sosa, G.; Jänsch, D.; Freudenberg, J.; Müllen, K.
2018. Chemistry of materials, 30 (12), 4157–4167. doi:10.1021/acs.chemmater.8b01703

Inkjet-Printed Triple Cation Perovskite Solar Cells.
Mathies, F.; Eggers, H.; Richards, B. S.; Hernandez-Sosa, G.; Lemmer, U.; Paetzold, U. W.
2018. ACS Applied Energy Materials, 1 (5), 1834–1839. doi:10.1021/acsaem.8b00222

Enhanced color conversion efficiency of remote phosphor-converted light-emitting diodes using micro-concavity arrays.
Yu, S.; Chen, J.; Tang, Y.; Li, Z.; Yu, B.; Lemmer, U.; Gomard, G.
2018. Organic Electronics and Photonics: Fundamentals and Devices, Strasbourg, F, 22–26, 2018, 52, SPIE, Bellingham, WA. doi:10.1117/12.2319151

Temperature Variation-Induced Performance Decline of Perovskite Solar Cells.
Schwenzer, J. A.; Rakocevic, L.; Gehlhaar, R.; Abzieher, T.; Gharibzadeh, S.; Moghadamzadeh, S.; Quintilla, A.; Richards, B. S.; Lemmer, U.; Paetzold, U. W.
2018. ACS applied materials & interfaces, 10 (19), 16390–16399. doi:10.1021/acsami.8b01033

Simulation of light scattering in clusters of nonspherical nanoparticles: an adapted T-matrix approach.
Theobald, D.; Egel, A.; Gomard, G.; Lemmer, U.
2018. Nanophotonics, Strasbourg, France, 22–26 April 2018, 82, SPIE, Bellingham, Wash. doi:10.1117/12.2305921

High Quality 3D Photonics using Nano Imprint Lithography of Fast Sol-gel Materials.
Bar-On, O.; Brenner, P.; Siegle, T.; Gvishi, R.; Kalt, H.; Lemmer, U.; Scheuer, J.
2018. Scientific reports, 8 (1), Art.Nr.:7833. doi:10.1038/s41598-018-26261-3

Fluorescence Quenching Sensor Arrays for the Discrimination of Nitroaromatic Vapors.
Bolse, N.; Habermehl, A.; Eschenbaum, C.; Lemmer, U.
2018. Electronic Nose Technologies and Advances in Machine Olfaction. Ed.: Y. Albastaki, 58–93, IGI Global, Hershey, PA. doi:10.4018/978-1-5225-3862-2.ch004

Correlation of Device Performance and Fermi Level Shift in the Emitting Layer of Organic Light-Emitting Diodes with Amine-Based Electron Injection Layers.
Stolz, S.; Lemmer, U.; Hernandez-Sosa, G.; Mankel, E.
2018. ACS applied materials & interfaces, 10 (10), 8877–8884. doi:10.1021/acsami.7b16352

Freeform surface invisibility cloaking of interconnection lines in thin-film photovoltaic modules.
Langenhorst, M.; Schumann, M. F.; Paetel, S.; Schmager, R.; Lemmer, U.; Richards, B. S.; Wegener, M.; Paetzold, U. W.
2018. Solar energy materials & solar cells, 182, 294–301. doi:10.1016/j.solmat.2018.03.034

Fully Digitally Printed Image Sensor Based on Organic Photodiodes.
Eckstein, R.; Strobel, N.; Rödlmeier, T.; Glaser, K.; Lemmer, U.; Hernandez-Sosa, G.
2018. Advanced optical materials, 6 (5), 1701108. doi:10.1002/adom.201701108

Light trapping in thin film silicon solar cells via phase separated disordered nanopillars.
Donie, Y. J.; Smeets, M.; Egel, A.; Lentz, F.; Preinfalk, J. B.; Mertens, A.; Smirnov, V.; Lemmer, U.; Bittkau, K.; Gomard, G.
2018. Nanoscale, 10 (14), 6651–6659. doi:10.1039/C8NR00455B

Inkjet-printed internal light extraction layers for organic light emitting diodes.
Eiselt, T.; Preinfalk, J. B.; Bittkau, K.; Gomard, G.; Hanemann, T.; Lemmer, U.
2018. Flexible and printed electronics, 3 (1), Art.Nr. 015007. doi:10.1088/2058-8585/aaa37b

Cloaking of metal grid electrodes on Lambertian emitters by free-form refractive surfaces.
Schumann, M. F.; Fritz, B.; Eckstein, R.; Lemmer, U.; Gomard, G.; Wegener, M.
2018. Optics letters, 43 (3), 527–530. doi:10.1364/OL.43.000527

Inkjet-printed perovskite distributed feedback lasers.
Mathies, F.; Brenner, P.; Hernandez-Sosa, G.; Howard, I. A.; Paetzold, U. W.; Lemmer, U.
2018. Optics express, 26 (2), A144 - A152. doi:10.1364/OE.26.00A144

Semiconductor:Insulator Blends for Speed Enhancement in Organic Photodiodes.
Strobel, N.; Eckstein, R.; Lehr, J.; Lemmer, U.; Hernandez-Sosa, G.
2018. Advanced electronic materials, 4 (10), Article no 1700345. doi:10.1002/aelm.201700345

Disordered diffraction gratings tailored by shape-memory based wrinkling and their application to photovoltaics.
Schauer, S.; Schmager, R.; Hünig, R.; Ding, K.; Paetzold, U. W.; Lemmer, U.; Worgull, M.; Hölscher, H.; Gomard, G.
2018. Optical materials express, 8 (1), 184–198. doi:10.1364/OME.8.000184

2017

Replicated petal surfaces as light-harvesting layers for photovoltaics: the role of structural disorder.
Fritz, B.; Hünig, R.; Schmager, R.; Hetterich, M.; Lemmer, U.; Gomard, G.
2017. 644. WE-Heraeus-Seminar

Numerical analysis of structural disorder effects for the design of plant-inspired light harvesting coatings.
Fritz, B.; Hünig, R.; Schmager, R.; Hetterich, M.; Lemmer, U.; Gomard, G.
2017. European Materials Research Society (E-MRS)

Numerical analysis of structural disorder effects for the design of plant-inspired light harvesting coatings.
Fritz, B.; Huenig, R.; Schmager, R.; Hetterich, M.; Lemmer, U.; Gomard, G.
2017. Spring School: Tailored Disorder, KIT, Karlsruhe

Microfluidic surface-enhanced Raman analysis systems by aerosol jet printing: Towards low-cost integrated sensor systems.
Habermehl, A.; Eckstein, R.; Strobel, N.; Bolse, N.; Hernandez-Sosa, G.; Mertens, A.; Eschenbaum, C.; Lemmer, U.
2017. 16th IEEE SENSORS Conference, ICSENS 2017, Glasgow, UK, October 29 - November 1, 2017, 1–3, IEEE, Piscataway, NJ. doi:10.1109/ICSENS.2017.8234346

Realization of high-Q cavities and lasers using Soft Nano imprinting Lithography.
Scheuer, J.; Bar-On, O.; Brenner, P.; Gvishi, R.; Lemmer, U.
2017. Proceedings of the 30th Annual Conference of the IEEE Photonics Society, IPC 2017, Orlando, Florida, USA, 1st - 5th October 2017, 215–216, IEEE, Piscataway (NJ). doi:10.1109/IPCon.2017.8116076

A low-cost versatile fluorescence quenching detection system for liquid- and vapor-phase sensing.
Bolse, N.; Huber, R.; Habermehl, A.; Eckstein, R.; Hernandez-Sosa, G.; Mertens, A.; Eschenbaum, C.; Lemmer, U.
2017. Proceedings of the IEEE SENSORS 2017, Glasgow, UK, October 29 – November 1, 2017, 1–3, IEEE, Piscataway, N.J. doi:10.1109/ICSENS.2017.8234424

Digital Aerosol Jet Printing for the Fabrication of Terahertz Metamaterials.
Jahn, D.; Eckstein, R.; Schneider, L. M.; Born, N.; Hernandez-Sosa, G.; Balzer, J. C.; Al-Naib, I.; Lemmer, U.; Koch, M.
2017. Advanced Materials Technologies, 3 (2), Art.Nr. 1700236. doi:10.1002/admt.201700236

Three dimensional whispering gallery mode resonators and microlasers made by a combination of direct laser writing and soft nanoimprint lithography.
Brenner, P.; Leonhard, T.; Eschenbaum, C.; Lemmer, U.; Bar-On, O.; Scheuer, J.; Siegle, T.; Kalt, H.; Gvishi, R.; Eschenbaum, C.; Lemmer, U.
2017. Proceedings of the European Conference on Lasers and Electro-Optics, CLEO_Europe 2017, Munich, Germany, 25th - 29th June 2017, Art.Nr. CK_P_17, OSA - The Optical Society, Washington

Scalable and low cost fabrication methods for wavelength tunable solution processed perovskite distributed feedback lasers.
Brenner, P.; Mathies, F.; Kapp, D.; Paetzold, U.; Quintilla, A.; Hernandez-Sosa, G.; Howard, I.; Lemmer, U.
2017. Proceedings of the European Conference on Lasers and Electro-Optics 2017, Munich, Germany, 25th - 29th June 2017, Art.Nr. JSV_3_2, OSA - The Optical Society, Wahington (DC)

Controlled molecular orientation of inkjet printed semiconducting polymer fibers by crystallization templating.
Rödlmeier, T.; Marszalek, T.; Held, M.; Beck, S.; Müller, C.; Eckstein, R.; Morfa, A. J.; Lovrincic, R.; Pucci, A.; Lemmer, U.; Zaumseil, J.; Pisula, W.; Hernandez-Sosa, G.
2017. Chemistry of materials, 29 (23), 10150–10158. doi:10.1021/acs.chemmater.7b03948

Screen-printed internal extraction layers based on scattering polymer/nanoparticle composites for OLEDs.
Preinfalk, J. B.; Eiselt, T.; Wehlus, T.; Rohnacher, V.; Hanemann, T.; Gomard, G.; Lemmer, U.
2017. Solid-State Lighting, SSL 2017, Boulder; United States, 6th - 9th November 2017, OSA - The Optical Society, Wahington (DC). doi:10.1364/SSL.2017.SW2C.4

Performance of silicon solar cells with cloaked contact fingers under realistic conditions.
Langenhorst, M.; Schumann, M. F.; Schmager, R.; Lehr, J.; Lemmer, U.; Wegener, M.; Richards, B.; Paetzold, U. W.
2017. Optical Nanostructures and Advanced Materials for Photovoltaics, Boulder, United States, 6th - 9th November 2017, OSA - The Optical Society, Wahington (DC). doi:10.1364/PV.2017.PW2A.3

SnO₂ Nanowire Based Aerosol Jet Printed Electronic Nose as Fire Detector.
Adib, M.; Eckstein, R.; Hernandez-Sosa, G.; Sommer, M.; Lemmer, U.
2017. IEEE sensors journal, 18 (2), 494–500. doi:10.1109/JSEN.2017.2777178

Lab-on-Chip, Surface-Enhanced Raman Analysis by Aerosol Jet Printing and Roll-to-Roll Hot Embossing.
Habermehl, A.; Strobel, N.; Eckstein, R.; Bolse, N.; Mertens, A.; Hernandez-Sosa, G.; Eschenbaum, C.; Lemmer, U.
2017. Sensors, 17 (10), 2401. doi:10.3390/s17102401

Additive-Assisted Crystallization Dynamics in Two-Step Fabrication of Perovskite Solar Cells.
Abzieher, T.; Mathies, F.; Hetterich, M.; Welle, A.; Gerthsen, D.; Lemmer, U.; Paetzold, U. W.; Powalla, M.
2017. Physica status solidi / A, 214 (12), Art.Nr. 1700509. doi:10.1002/pssa.201700509

Triple cation mixed-halide perovskites for tunable lasers.
Brenner, P.; Glöckler, T.; Rueda-Delgado, D.; Abzieher, T.; Jakoby, M.; Richards, B. S.; Paetzold, U. W.; Howard, I. A.; Lemmer, U.
2017. Optical materials express, 7 (11), 4082–4094. doi:10.1364/OME.7.004082

Bioinspired phase-separated disordered nanostructures for thin photovoltaic absorbers.
Siddique, R. H.; Donie, Y. J.; Gomard, G.; Yalamanchili, S.; Merdzhanova, T.; Lemmer, U.; Hölscher, H.
2017. Science advances, 3 (10), e1700232. doi:10.1126/sciadv.1700232

Texture of the Viola Flower for Light Harvesting in Photovoltaics.
Schmager, R.; Fritz, B.; Hünig, R.; Ding, K.; Lemmer, U.; Richards, B. S.; Gomard, G.; Paetzold, U. W.
2017. ACS photonics, 2687–2692. doi:10.1021/acsphotonics.7b01153

Reliability of Aerosol Jet Printed Fluorescence Quenching Sensor Arrays for the Identification and Quantification of Explosive Vapors.
Bolse, N.; Eckstein, R.; Habermehl, A.; Hernandez-Sosa, G.; Eschenbaum, C.; Lemmer, U.
2017. ACS omega, 2 (10), 6500–6505. doi:10.1021/acsomega.7b01263

Plane-wave coupling formalism for T-matrix simulations of light scattering by nonspherical particles.
Theobald, D.; Egel, A.; Gomard, G.; Lemmer, U.
2017. Physical review / A, 96 (3), Art. Nr. 033822. doi:10.1103/PhysRevA.96.033822

3D integrated photonics based on fast sol-gel technology and soft nano imprint lithography.
Bar-On, O.; Brenner, P.; Gvishi, R.; Siegle, T.; Kalt, H.; Lemmer, U.; Scheuer, J.
2017. Advanced Photonics, NOMA 2017; New Orleans; United States; 24 July 2017 through 27 July 2017, 3 S., OSA - The Optical Society, Wahington (DC). doi:10.1364/NOMA.2017.NoTh1C.5

Extending the applicability of the T-matrix method to light scattering by flat particles on a substrate via truncation of sommerfeld integrals.
Egel, A.; Eremin, Y.; Wriedt, T.; Theobald, D.; Lemmer, U.; Gomard, G.
2017. Journal of quantitative spectroscopy & radiative transfer, 202, 279–285. doi:10.1016/j.jqsrt.2017.08.016

Transient response of a microfibrous web array for the discrimination of nitroaromatic explosive vapors.
Bolse, N.; Schend, M.; Habermehl, A.; Eschenbaum, C.; Lemmer, U.
2017. 2017 ISOCS/IEEE International Symposium on Olfaction and Electronic Nose (ISOEN), Montreal, QC, Canada, 28–31 May 2017, 1–3, IEEE, Piscataway (NY). doi:10.1109/ISOEN.2017.7968850

Slot Die Coated and Flexo Printed Highly Efficient SMOLEDs.
Raupp, S.; Daume, D.; Tekoglu, S.; Merklein, L.; Lemmer, U.; Hernandez-Sosa, G.; Sauer, H. M.; Dörsam, E.; Scharfer, P.; Schabel, W.
2017. Advanced materials technologies, 2 (2), Art. Nr.: 1600230. doi:10.1002/admt.201600230

CELES : CUDA-accelerated simulation of electromagnetic scattering by large ensembles of spheres.
Egel, A.; Pattelli, L.; Mazzamuto, G.; Wiersma, D. S.; Lemmer, U.
2017. Journal of quantitative spectroscopy & radiative transfer, 199, 103–110. doi:10.1016/j.jqsrt.2017.05.010

Identifying Charge-Transfer States in Polymer:Fullerene Heterojunctions by Their Emission Polarization Anisotropy.
Arndt, A. P.; Gerhard, M.; Koch, M.; Lemmer, U.; Howard, I. A.
2017. The journal of physical chemistry <Washington, DC> / C, 121 (11), 6357–6364. doi:10.1021/acs.jpcc.6b12853

Field-induced exciton dissociation in PTB7-based organic solar cells.
Gerhard, M.; Arndt, A. P.; Bilal, M.; Lemmer, U.; Koch, M.; Howard, I. A.
2017. Physical review / B, 95 (19), Art.Nr. 195301. doi:10.1103/PhysRevB.95.195301

Assessing the influence of structural disorder on the plant epidermal cells’ optical properties: a numerical analysis.
Fritz, B.; Hünig, R.; Schmager, R.; Hetterich, M.; Lemmer, U.; Gomard, G.
2017. Bioinspiration & biomimetics, 12 (3), Art.Nr. 036011. doi:10.1088/1748-3190/aa6c46

Discrimination of trace nitroaromatics using linear discriminant analysis on aerosol jet printed fluorescent sensor arrays.
Bolse, N.; Eckstein, R.; Schend, M.; Habermehl, A.; Hernandez-Sosa, G.; Eschenbaum, C.; Lemmer, U.
2017. SPIE Optics and Optoelectronics, Prague, Czech Republic, April 24th - 27th 2017. Ed.: F. Baldini, Art. Nr. 102310R, SPIE, Bellingham (WA). doi:10.1117/12.2265522

3D whispering-gallery-mode microlasers by direct laser writing and subsequent soft nanoimprint lithography.
Brenner, P.; Bar-On, O.; Siegle, T.; Leonhard, T.; Gvishi, R.; Eschenbaum, C.; Kalt, H.; Scheuer, J.; Lemmer, U.
2017. Applied optics, 56 (13), 3703. doi:10.1364/AO.56.003703

A digitally printed optoelectronic nose for the selective trace detection of nitroaromatic explosive vapours using fluorescence quenching.
Bolse, N.; Eckstein, R.; Schend, M.; Habermehl, A.; Eschenbaum, C.; Hernandez-Sosa, G.; Lemmer, U.
2017. Flexible and printed electronics, 2 (2), Art. Nr. 024001. doi:10.1088/2058-8585/aa6601

Large-Area Screen-Printed Internal Extraction Layers for Organic Light-Emitting Diodes.
Preinfalk, J. B.; Eiselt, T.; Wehlus, T.; Rohnacher, V.; Hanemann, T.; Gomard, G.; Lemmer, U.
2017. ACS photonics, 4 (4), 928–933. doi:10.1021/acsphotonics.6b01027

Fabrication of SERS Substrates by Roll-to-Roll Hot Embossing.
Habermehl, A.; Liu, X.; Eschenbaum, C.; Lemmer, U.
2017. Nano-Optics: Principles Enabling Basic Research and Applications. Ed.: B. Di Bartolo, 513–515, Springer Netherlands, Dordrecht. doi:10.1007/978-94-024-0850-8_55

Degradation Mechanisms in Organic Light-Emitting Diodes with Polyethylenimine as a Solution-Processed Electron Injection Layer.
Stolz, S.; Zhang, Y.; Lemmer, U.; Hernandez-Sosa, G.; Aziz, H.
2017. ACS applied materials & interfaces, 9 (3), 2776–2785. doi:10.1021/acsami.6b15062

Accurate optical simulation of nano-particle based internal scattering layers for light outcoupling from organic light emitting diodes.
Egel, A.; Gomard, G.; Kettlitz, S. W.; Lemmer, U.
2017. Journal of optics, 19 (2), Art. Nr. 025605. doi:10.1088/2040-8986/aa5523

In situ Studies of Morphology Formation in Solution-Processed Polymer-Fullerene Blends.
Barrena, E.; Buss, F.; Perez-Rodriguez, A.; Sanyal, M.; Schmidt-Hansberg, B.; Klein, M. F. G.; Scharfer, P.; Schabel, W.; Lemmer, U.
2017. Elementary processes in organic photovoltaics. Ed.: K. Leo, 1–24, Springer, Cham. doi:10.1007/978-3-319-28338-8_1

2016

Printed sensor arrays for the fluorescence detection of explosive traces.
Bolse, N.; Eckstein, R.; Schend, M.; Habermehl, A.; Hernandez-Sosa, G.; Eschenbaum, C.; Lemmer, U.
2016. Engineering and Life, Hannover, 19.-21. Oktober 2016

Roll-to-roll fabrication approaches for surface-enhanced Raman spectroscopy.
Habermehl, A.; Eckstein, R.; Bolse, N.; Eschenbaum, C.; Hernandez-Sosa, G.; Lemmer, U.
2016. Engineering and Life, Hannover, 19.-21. Oktober 2016

OLEDs Exceeding 1000 cd/A Current Efficiency.
Lemmer, U.
2016. Solid-State Lighting, SSL 2016; Leipzig; Germany; 14 November 2016 through 17 November 2016, OSA - The Optical Society, Wahington (DC). doi:10.1364/SSL.2016.SSW3C.3

Soft Lithography of 3D Polymeric Lasers and Cavities.
Bar-On, O.; Brenner, P.; Siegle, T.; Gvishi, R.; Krämmer, S.; Kalt, H.; Lemmer, U.; Scheuer, J.
2016. Conference on Lasers and Electro-Optics (CLEO), San Jose, CA, June 5-10, 2016, Paper SM4E.3, OSA, Washington, DC. doi:10.1364/CLEO_SI.2016.SM4E.3

One-step additive crosslinking of conjugated polyelectrolyte interlayers: Improved lifetime and performance of solution-processed OLEDs.
Stolz, S.; Petzoldt, M.; Kotadiya, N.; Rödlmeier, T.; Eckstein, R.; Freudenberg, J.; Bunz, U. H. F.; Lemmer, U.; Mankel, E.; Hamburger, M.; Hernandez-Sosa, G.
2016. Journal of materials chemistry / C, 4 (47), 11150–11156. doi:10.1039/c6tc04417d

Multipass inkjet printed planar methylammonium lead iodide perovskite solar cells.
Mathies, F.; Abzieher, T.; Hochstuhl, A.; Glaser, K.; Colsmann, A.; Paetzold, U. W.; Hernandez-Sosa, G.; Lemmer, U.; Quintilla, A.
2016. Journal of materials chemistry / A, 4 (48), 19207–19213. doi:10.1039/C6TA07972E

Development and characterization of high refractive index and high scattering acrylate polymer layers.
Eiselt, T.; Gomard, G.; Preinfalk, J.; Gleißner, U.; Lemmer, U.; Hanemann, T.
2016. Optical engineering, 55 (11), Art. Nr. 117106. doi:10.1117/1.OE.55.11.117106

Light Management in Thin Film Solar Cells using Internal Scattering Layers made by Polymer Blend Lithography.
Donie, Y. J.; Smeets, M.; Smirnov, V.; Preinfalk, J. B.; Egel, A.; Lemmer, U.; Bittkau, K.; Gomard, G.
2016. Optical Nanostructures and Advanced Materials for Photovoltaics 2016, Leipzig, 14.-17. November 2016, PTh2A.6, Optical Society of America, Washington, DC. doi:10.1364/PV.2016.PTh2A.6

Accurate Modeling of Outcoupling from OLEDs: Volumetric versus Flat Internal Scattering Layers.
Egel, A.; Theobald, D.; Donie, Y. J.; Preinfalk, J. B.; Gomard, G.; Lemmer, U.
2016. Solid-State Lighting 2016, Leipzig, 14.-17. November 2016, SSW2D.3, Optical Society of America, Washington, DC. doi:10.1364/SSL.2016.SSW2D.3

Highly stable solution processed metal-halide perovskite lasers on nanoimprinted distributed feedback structures.
Brenner, P.; Stulz, M.; Kapp, D.; Abzieher, T.; Paetzold, U. W.; Quintilla, A.; Howard, I. A.; Kalt, H.; Lemmer, U.
2016. Applied physics letters, 109 (14), 141106. doi:10.1063/1.4963893

Light scattering by oblate particles near planar interfaces: on the validity of the T-matrix approach.
Egel, A.; Theobald, D.; Donie, Y.; Lemmer, U.; Gomard, G.
2016. Optics express, 24 (22), 25154–25168. doi:10.1364/OE.24.025154

Development and characterization of adjustable refractive index scattering epoxy acrylate polymer layers.
Eiselt, T.; Preinfalk, J.; Gleißner, U.; Lemmer, U.; Hanemann, T.
2016. Light Manipulating Organic Materials and Devices III : Proceedings of SPIE Optics and Photonics, San Diego, CA, August 28 - September 1, 2016. Ed.: J. E. Haley, 99390Q/1–7, SPIE, Bellingham (WA). doi:10.1117/12.2235905

Photon management in solution-processed organic light-emitting diodes : a review of light outcoupling micro- and nanostructures.
Gomard, G.; Preinfalk, J. B.; Egel, A.; Lemmer, U.
2016. Journal of photonics for energy, 6 (3), 030901. doi:10.1117/1.JPE.6.030901

Digitally Printed Dewetting Patterns for Self-Organized Microelectronics.
Eckstein, R.; Alt, M.; Rödlmeier, T.; Scharfer, P.; Lemmer, U.; Hernandez-Sosa, G.
2016. Advanced materials, 28 (35), 7708–7715. doi:10.1002/adma.201602082

A compaative study of Coumarin 102 and Nile Red for the detection of explosives, warfare agents and narcotics by solution-phase fluorescence quenching.
Bolse, N.; Eschenbaum, C.; Lemmer, U.
2016. Optical Sensors 2016, Vancouver, CDN, July 18-20, 2016. OSA Technical Digest, SeW1F.3, OSA, Washington, D.C

Flower Power: Exploiting Plants’ Epidermal Structures for Enhanced Light Harvesting in Thin-Film Solar Cells.
Hünig, R.; Mertens, A.; Stephan, M.; Schulz, A.; Richter, B.; Hetterich, M.; Powalla, M.; Lemmer, U.; Colsmann, A.; Gomard, G.
2016. Advanced optical materials, 4 (10), 1487–1493. doi:10.1002/adom.201600046

Loss mechanisms in organic solar cells based on perylene diimide acceptors studied by time-resolved photoluminescence.
Gerhard, M.; Gehring, D.; Howard, I. A.; Arndt, A. P.; Bilal, M.; Rahimi-Iman, A.; Lemmer, U.; Laquai, F.; Koch, M.
2016. Organic Photonics VII. Ed.: D. Cheyns, 98950H, SPIE, Bellingham. doi:10.1117/12.2227672

High-Performance Electron Injection Layers with a Wide Processing Window from an Amidoamine-Functionalized Polyfluorene.
Stolz, S.; Petzoldt, M.; Dück, S.; Sendner, M.; Bunz, U. H. F.; Lemmer, U.; Hamburger, M.; Hernandez-Sosa, G.
2016. ACS Applied Materials and Interfaces, 8 (20), 12959–12967. doi:10.1021/acsami.6b03557

Development and characterization of high refractive index and high scattering acrylate polymer layers.
Eiselt, T.; Gomard, G.; Preinfalk, J.; Gleissner, U.; Lemmer, U.; Hanemann, T.
2016. Micro Optics 2016 : Proceedings of Photonics Europe, Bruxelles, B, April 3-7, 2016. Ed.: H. Thienpont, 98880Q, SPIE, Bellingham. doi:10.1117/12.2227327

Optoelectrical improvement of ultra-thin Cu(In,Ga)Se₂ solar cells through microstructured MgF₂ and Al₂O₃ back contact passivation layer.
Casper, P.; Hünig, R.; Gomard, G.; Kiowski, O.; Reitz, C.; Lemmer, U.; Powalla, M.; Hetterich, M.
2016. Physica status solidi / Rapid research letters, 10 (5), 376–380. doi:10.1002/pssr.201600018

Emissive Polyelectrolytes As Interlayer for Color Tuning and Electron Injection in Solution-Processed Light-Emitting Devices.
Tekoglu, S.; Petzoldt, M.; Stolz, S.; Bunz, U. H. F.; Lemmer, U.; Hamburger, M.; Hernandez-Sosa, G.
2016. ACS Applied Materials and Interfaces, 8 (11), 7320–7325. doi:10.1021/acsami.6b00665

Adjustable passivation of SiO₂ trap states in OFETs by an ultrathin CVD deposited polymer coating.
Alt, M.; Melzer, C.; Mathies, F.; Deing, K.; Hernandez-Sosa, G.; Lemmer, U.
2016. Applied physics / A, 122, Art. Nr. 204. doi:10.1007/s00339-016-9678-6

Cloaking Contacts on Large-Area Organic Light-Emitting Diodes.
Mayer, F.; Schittny, R.; Egel, A.; Niemeyer, A.; Preinfalk, J.; Lemmer, U.; Wegener, M.
2016. Advanced optical materials, 4 (5), 740–745. doi:10.1002/adom.201500652

Understanding the effect of solvent vapor annealing on solution-processed A-D-A oligothiophene bulk-heterojunction solar cells: The role of alkyl side chains.
Wessendorf, C. D.; Perez-Rodriguez, A.; Hanisch, J.; Arndt, A. P.; Ata, I.; Schulz, G. L.; Quintilla, A.; Bäuerle, P.; Lemmer, U.; Wochner, P.; Ahlswede, E.; Barrena, E.
2016. Journal of Materials Chemistry A, 4 (7), 2571–2580. doi:10.1039/c5ta07713c

Naphthalene Tetracarboxydiimide-Based n-Type Polymers with Removable Solubility via Thermally Cleavable Side Chains.
Hillebrandt, S.; Adermann, T.; Alt, M.; Schinke, J.; Glaser, T.; Mankel, E.; Hernandez-Sosa, G.; Jaegermann, W.; Lemmer, U.; Pucci, A.; Kowalsky, W.; Müllen, K.; Lovrincic, R.; Hamburger, M.
2016. ACS Applied Materials and Interfaces, 8 (7), 4940–4945. doi:10.1021/acsami.5b10901

Efficient evaluation of Sommerfeld integrals for the optical simulation of many scattering particles in planarly layered media.
Egel, A.; Kettlitz, S. W.; Lemmer, U.
2016. Journal of the Optical Society of America A, 33 (4), 698–706. doi:10.1364/JOSAA.33.000698

Position sensing by transient photocurrents of organic photodiodes.
Arndt, A. P.; Kettlitz, S. W.; Mescher, J.; Lemmer, U.
2016. IEEE photonics technology letters, 28 (6), 617–620. doi:10.1109/LPT.2015.2503050

Tuning the Microcavity of Organic Light Emitting Diodes by Solution Processable Polymer-Nanoparticle Composite Layers.
Preinfalk, J. B.; Schackmar, F. R.; Lampe, T.; Egel, A.; Schmidt, T. D.; Brütting, W.; Gomard, G.; Lemmer, U.
2016. ACS Applied Materials and Interfaces, 8 (4), 2666–2672. doi:10.1021/acsami.5b10717

2015

Time-resolved spectroscopy of charge transfer phenomena in organic solar cells.
Gerhard, M.; Arndt, A.; Quintilla, A.; Rahimi-Iman, A.; Lemmer, U.; Koch, M.
2015. SPIE OPTO - Organic Photonic Materials and Devices XVII, San Francisco, California, United States, 2015, 936010, SPIE, Bellingham (WA). doi:10.1117/12.2076138

SERS-Substrate zur Integration in mikrofluidische Sensorsysteme.
Habermehl, A.; Eckstein, R.; König, F.; Liu, X.; Eschenbaum, C.; Lemmer, U.
2015. MikroSystemTechnik Kongress, Karlsruhe, 26.-28. Oktober 2015

Modeling approach to derive the anisotropic complex refractive index of polymer:fullerene blends for organic solar cells utilizing spectroscopic ellipsometry.
Klein, M. F. G.; de Medeiros, G. Q. G.; Kapetana, P.; Lemmer, U.; Colsmann, A.
2015. Journal of photonics for energy, 5 (1), Art. Nr.: 057204. doi:10.1117/1.JPE.5.057204

Temperature- and energy-dependent separation of charge-transfer states in PTB7-based organic solar cells.
Gerhard, M.; Arndt, A. P.; Howard, I. A.; Rahimi-Iman, A.; Lemmer, U.; Koch, M.
2015. The journal of physical chemistry <Washington, DC> / C, 119 (51), 28309–28318. doi:10.1021/acs.jpcc.5b09842

Shape-memory polymer resonators for novel continuously tunable organic distributed feedback lasers.
Schauer, S.; Liu, X.; Worgull, M.; Lemmer, U.; Hölscher, H.
2015. SPIE Optics and Photonics 2015, San Diego, Calif., August 9-13, 2015

Degradation in aluminum resonant optical rod antennas.
Schwab, P. M.; Moosmann, C.; Dopf, K.; Ilin, K. S.; Siegel, M.; Lemmer, U.; Eisler, H. J.
2015. Optical Metamaterials and Novel Optical Phenomena Based on Nanofabricated Structures : Proceedings of Symposium I of the Materials Research Society Fall Meeting 2014, Boston, Mass., November 30 - December 5, 2014. Ed.: Y. Liu, 10–15, MRS, Warrendale, PA. doi:10.1557/opl.2015.40

Complementary microscopy platform for investigations of hybrid nanostructures comprising quantum dots and plasmonic particles.
Dopf, K.; Schwab, P. M.; Moosmann, C.; Habermehl, A.; Lemmer, U.; Eisler, H. J.
2015. Symposium II – Semiconductor Nanocrystals, Plasmonic Metal Nanoparticles, and Metal-Hybrid Structures : Proceedings of Symposium II of the Materials Research Society Fall Meeting 2014, Boston, Mass., November 30 - December 5, 2014. Ed.: M. Kuno, mrsf14–1748-ii05, MRS, Warrendale, PA. doi:10.1557/opl.2015.94

Coupled T-shaped optical antennas with two resonances localized in a common nanogap.
Dopf, K.; Moosmann, C.; Kettlitz, S. W.; Schwab, P. M.; Ilin, K.; Siegel, M.; Lemmer, U.; Eisler, H. J.
2015. ACS photonics, 2 (11), 1644–1651. doi:10.1021/acsphotonics.5b00446

Single-pass and omniangle light extraction from light-emitting diodes using transformation optics.
Schumann, M. F.; Abass, A.; Gomard, G.; Wiesendanger, S.; Lemmer, U.; Wegener, M.; Rockstuhl, C.
2015. Optics letters, 40 (23), 5626–5629. doi:10.1364/OL.40.005626

Light emission, light detection and strain sensing with nanocrystalline graphene.
Riaz, A.; Pyatkov, F.; Alam, A.; Dehm, S.; Felten, A.; Chakravadhanula, V. S. K.; Flavel, B. S.; Kübel, C.; Lemmer, U.; Krupke, R.
2015. Nanotechnology, 26, 325202/1–10. doi:10.1088/0957-4484/26/32/325202

Dipolar SAMs reduce charge carrier injection barriers in n-channel organic field effect transistors.
Jesper, M.; Alt, M.; Schinke, J.; Hillebrandt, S.; Angelova, I.; Rohnacher, V.; Pucci, A.; Lemmer, U.; Jaegermann, W.; Kowalsky, W.; Glaser, T.; Mankel, E.; Lovrincic, R.; Golling, F.; Hamburger, M.; Bunz, U. H. F.
2015. Langmuir, 31 (37), 10303–10309. doi:10.1021/acs.langmuir.5b02316

A biphasic mercury-ion sensor: Exploiting microfluidics to make simple anilines competitive ligands.
Petzold, M.; Eschenbaum, C.; Schwaebel, S. T.; Broedner, K.; Lemmer, U.; Hamburger, M.; Bunz, U. H. F.
2015. Chemistry - a European journal, 21, 14297–14300. doi:10.1002/chem.201502736

Illumination angle and layer thickness influence on the photo current generation in organic solar cells: A combined simulative and experimental study.
Mescher, J.; Mertens, A.; Egel, A.; Kettlitz, S. W.; Lemmer, U.; Colsmann, A.
2015. AIP Advances, 5 (7), 077188/1–6. doi:10.1063/1.4928074

Aerosol-jet printed flexible organic photodiodes: Semi-transparent, color neutral, and highly efficient.
Eckstein, R.; Rödlmeier, T.; Glaser, T.; Valouch, S.; Mauer, R.; Lemmer, U.; Hernandez-Sosa, G.
2015. Advanced electronic materials, 1 (8), 1500101/1–7. doi:10.1002/aelm.201500101

Time-resolved charge-transfer state emission in organic solar cells : Temperature and blend composition dependences of interfacial traps.
Arndt, A. P.; Gerhard, M.; Quintilla, A.; Howard, I. A.; Koch, M. W.; Lemmer, U.
2015. The journal of physical chemistry <Washington, DC> / C, 119 (24), 13516–13523. doi:10.1021/acs.jpcc.5b03507

Degradation mechanisms of polyfluorene-based organic semiconductor lasers under ambient and oxygen-free conditions.
Brenner, P.; Fleig, L. M.; Liu, X.; Welle, A.; Bräse, S.; Lemmer, U.
2015. Journal of polymer science / B, 53, 1029–1034. doi:10.1002/polb.23733

Charge generation layers for solution processed tandem organic light emitting diodes with regular device architecture.
Höfle, S.; Bernhard, C.; Bruns, M.; Kübel, C.; Scherer, T.; Lemmer, U.; Colsmann, A.
2015. ACS applied materials & interfaces, 7, 8132–8137. doi:10.1021/acsami.5b00883

Fabrication of hierarchical photonic nanostructures inspired by Morpho butterflies utilizing laser interference lithography.
Siddique, R. H.; Hünig, R.; Faisal, A.; Lemmer, U.; Hölscher, H.
2015. Optical materials express, 5 (5), 996–1005. doi:10.1364/OME.5.000996

Tailored surface-enhanced raman nanopillar arrays fabricated by laser-assisted replication for biomolecular detection using organic semiconductor lasers.
Liu, X.; Lebedkin, S.; Besser, H.; Pfleging, W.; Prinz, S.; Wissmann, M.; Schwab, P. M.; Nazarenko, I.; Guttmann, M.; Kappes, M. M.; Lemmer, U.
2015. ACS nano, 9, 260–270. doi:10.1021/nn506589a

Soluble diazaiptycenes: materials for solution-processed organic electronics.
Biegger, P.; Stolz, S.; Intorp, S. N.; Zhang, Y.; Engelhart, J. U.; Rominger, F.; Hardcastle, K. I.; Lemmer, U.; Qian, X.; Hamburger, M.; Bunz, U. H. F.
2015. The journal of organic chemistry, 80, 582–589. doi:10.1021/jo502564w

Shape-memory polymers as flexible resonator substrates for continuously tunable organic DFB lasers.
Schauer, S.; Liu, X.; Worgull, M.; Lemmer, U.; Hölscher, H.
2015. Optical materials express, 5 (3), 576–584. doi:10.1364/OME.5.000576

2014

Utilizing laser interference lithography to fabricate hierarchical optical active nanostructures inspired by the blue Morpho butterfly.
Siddique, R. H.; Faisal, A.; Hünig, R.; Bartels, C.; Wacker, I.; Lemmer, U.; Hölscher, H.
2014. SPIE Optical Engineering + Applications - The Nature of Light: Light in Nature V, San Diego, California, United States, 18 August 2014, 91870E, SPIE, Bellingham (WA). doi:10.1117/12.2066467

Sensitivity improvement in fluorescence-based particle detection.
Kettlitz, S. W.; Moosmann, C.; Valouch, S.; Lemmer, U.
2014. Cytometry / A, 85 (9), 746–755. doi:10.1002/cyto.a.22499

A comparative study of Coumarin 102 and Nile Red for the detection of explosives, warfare agents and narcotics by solution-phase fluorescence quenching.
Bolse, N.; Eschenbaum, C.; Lemmer, U.
2014. Optical Sensors 2016, Vancouver, Canada, 18-20 July 2016, Art. Nr. SeW1F.3, OSA - The Optical Society. doi:10.1364/SENSORS.2016.SeW1F.3

Surface-Enhanced Raman Spectroscopy (SERS) using Nanopillar Arrays as Functional Substrates and an Organic Semiconductor DFB Laser as Excitation Source.
Liu, X.; Lebedkin, S.; Pfleging, W.; Besser, H.; Wissmann, M.; Nazarenko, I.; Mappes, T.; Koeber, S.; Koos, C. G.; Kappes, M.; Lemmer, U.
2014. 2014 Conference on Lasers and Electro-Optics, CLEO: Science and Innovations : Part of CLEO 2014, San Jose, CA, June 8 - 13, 2014, paper STh4H.8, OSA, Washington, DC. doi:10.1364/CLEO_SI.2014.STh4H.8

Organic photovoltaics and energy: general discussion.
Hodgkiss, J.; Conboy, G.; Hutchings, G.; Higgins, S.; Galbraith, I.; Findlay, N.; Taylor, R.; Salle, M.; Zhang, S.; Frey, G.; Bâldea, I.; Samuel, I.; Ebenhoch, B.; Wudl, F.; Turak, A.; Xu, B.; Angioni, E.; Venkatramani, R.; Lemmer, U.; Perepichka, D.; Kanibolotsky, A.; Skabara, P.; Wildman, J.; Zysman-Colman, E.; Bradley, D.; McCulloch, I.; McDouall, J.; Ponomarenko, S.; Nelson, J.; Kim, J.-S.
2014. Faraday Discussions, 174, 341–355. doi:10.1039/C4FD90050B

Organic bioelectronics: general discussion.
Higgins, S.; Hodgkiss, J.; Plank, N.; Torsi, L.; Cowper, P.; Malliaras, G.; Braeken, Y.; Laurand, N.; Samuel, I.; Pomorska, A.; Wudl, F.; Xu, B.; Lemmer, U.; Perepichka, D.; Mount, A.; Dennany, L.; Bradley, D.; Melzer, K.
2014. Faraday Discussions, 174, 413–428. doi:10.1039/C4FD90048K

Molecular electronics: general discussion.
Hodgkiss, J.; Zysman-Colman, E.; Higgins, S.; Solomon, G.; Bâldea, I.; Samuel, I.; Venkataraman, L.; Wudl, F.; Xu, B.; Venkatramani, R.; Ottosson, H.; Perepichka, D.; Lemmer, U.; Skabara, P.; Mount, A.; Bradley, D.
2014. Faraday Discussions, 174, 125–151. doi:10.1039/C4FD90049A

Dipole Emission in Layered Media with Multiple Spherical Scatterers.
Egel, A.; Lemmer, U.
2014. Scattering by Aggregates on Surfaces : [proceedings of the Workshop Scattering by Aggregates (on Surfaces) ... held at Institut für Werkstofftechnik on March 24 - 25, 2014 on the University of Bremen Campus]. Ed.: T. Wriedt, 62–65, epubli GmbH, Berlin

Simulation of semi-transparent organic tandem solar cells for solar shading.
Mescher, J.; Kettlitz, S. W.; Christ, N.; Klein, M. F. G.; Pütz, A.; Mertens, A.; Colsmann, A.; Lemmer, U.
2014. 14th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD 2014) : Palma de Mallorca, Spain, 1 - 4 September 2014. Ed.: J. Piprek, 165–166, IEEE, Piscataway (NJ). doi:10.1109/NUSOD.2014.6935408

Compensation for RC-effects in organic photodiodes with large sheet resistances.
Kettlitz, S. W.; Mescher, J.; Lemmer, U.
2014. 14th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD 2014) : Palma de Mallorca, Spain, 1 - 4 September 2014. Ed.: J. Piprek, 177–178, IEEE, Piscataway (NJ). doi:10.1109/NUSOD.2014.6935414

A simple tracking system to monitor solar PV panels.
Bentaher, H.; Kaich, H.; Ayadi, N.; Ben Hmouda, M.; Maalej, A.; Lemmer, U.
2014. Energy Conversion and Management, 78, 872–875. doi:10.1016/j.enconman.2013.09.042

Extracting the charge carrier mobility from the nanosecond photocurrent response of organic solar cells and photodiodes.
Christ, N.; Kettlitz, S. W.; Mescher, J.; Lemmer, U.
2014. Applied Physics Letters, 104 (5), 053302. doi:10.1063/1.4863737

Modelling and simulation of gate leakage currents of solution-processed OTFT.
Hengen, S.; Alt, M.; Hernandez-Sosa, G.; Giehl, J.; Lemmer, U.; Mechau, N.
2014. Organic Electronics: physics, materials, applications, 15 (3), 829–834. doi:10.1016/j.orgel.2013.12.022

Investigation of Solution-Processed Ultrathin Electron Injection Layers for Organic Light-Emitting Diodes.
Stolz, S.; Scherer, M.; Mankel, E.; Lovrincic, R.; Schinke, J.; Kowalsky, W.; Jaegermann, W.; Lemmer, U.; Mechau, N.; Hernandez-Sosa, G.
2014. ACS Applied Materials and Interfaces, 6 (9), 6616–6622. doi:10.1021/am500287y

Design rules for semi-transparent organic tandem solar cells for window integration.
Mescher, J.; Kettlitz, S. W.; Christ, N.; Klein, M. F. G.; Puetz, A.; Mertens, A.; Colsmann, A.; Lemmer, U.
2014. Organic Electronics: physics, materials, applications, 15 (7), 1476–1480. doi:10.1016/j.orgel.2014.04.011

Enhanced Electron Injection into Inverted Polymer Light-Emitting Diodes by Combined Solution-Processed Zinc Oxide/Polyethylenimine Interlayers.
Höfle, S.; Schienle, A.; Bruns, M.; Lemmer, U.; Colsmann, A.
2014. Advanced materials, 26 (17), 2750–2754. doi:10.1002/adma.201304666

Optical transmission measurements for in-line monitoring of turbid oil-water emulsions.
Metz, P.; Dopf, K.; Aichholz, M.; Riedel, B.; Lemmer, U.; Freudig, B.; Zimmermann, C.; Gerken, M.
2014. Optical sensing and detection III, Brussels, B., 14 - 17 April 2014. F. Berghmans, 91410J, SPIE, Bellingham, WA. doi:10.1117/12.2049396

Particle detection from spatially modulated fluorescence signals.
Kettlitz, S. W.; Moosmann, C.; Valouch, S.; Lemmer, U.
2014. Biophotonics: photonic solutions for better health care IV, Brussels, B., 14 - 17 April 2014. Ed.: J. Popp, 91291B, SPIE, Bellingham, WA. doi:10.1117/12.2052169

Fluorescence particle detection using microfluidics and planar optoelectronic elements.
Kettlitz, S. W.; Moosmann, C.; Valouch, S.; Lemmer, U.
2014. Biophotonics: photonic solutions for better health care IV, Brussels, B., 14 - 17 April 2014. Ed.: J. Popp, 91293W, SPIE, Bellingham, WA. doi:10.1117/12.2052140

Superresolution optical fluctuation imaging (SOFI) aided nanomanipulation using AFM for novel artificial arrangements of chemically functionalized colloidal quantum dots and plasmonic structures.
Dopf, K.; Heunisch, S.; Schwab, P.; Moosmann, C.; Habermehl, A.; Lemmer, U.; Eisler, H.-J.
2014. Nanophotonics V, Brussels, B., 13. - 17. April 2014. Ed.: D. Andrews, 91260N, SPIE, Bellingham, WA. doi:10.1117/12.2051277

Organic semiconductor distributed feedback laser as excitation source in Raman spectroscopy using free-beam and fibre coupling.
Liu, X.; Lebedkin, S.; Mappes, T.; Köber, S.; Koos, C.; Kappes, M.; Lemmer, U.
2014. Organic photonics VI, Brussels, B., 15 - 16 April 2014. Ed.: B. Rand, 91370Y, SPIE, Bellingham, WA. doi:10.1117/12.2051645

The Compromises of Printing Organic Electronics: A Case Study of Gravure-Printed Light-Emitting Electrochemical Cells.
Hernandez-Sosa, G.; Tekoglu, S.; Stolz, S.; Eckstein, R.; Teusch, C.; Trapp, J.; Lemmer, U.; Hamburger, M.; Mechau, N.
2014. Advanced Materials, 26 (20), 3235–3240. doi:10.1002/adma.201305541

Aerosol jet printed top grids for organic optoelectronic devices.
Eckstein, R.; Hernandez-Sosa, G.; Lemmer, U.; Mechau, N.
2014. Organic electronics : materials, physics, chemistry, applications, 15 (9), 2135–2140. doi:10.1016/j.orgel.2014.05.031

Efficiency of exciton dissociation at internal organic interfaces beyond harmonic approximation.
Wiemer, M.; Koch, M.; Lemmer, U.; Pevtsov, A. B.; Baranovskii, S. D.
2014. Organic electronics : materials, physics, chemistry, applications, 15 (10), 2461–2467. doi:10.1016/j.orgel.2014.07.025

Dipole emission in stratified media with multiple spherical scatterers: Enhanced outcoupling from OLEDs.
Egel, A.; Lemmer, U.
2014. Journal of Quantitative Spectroscopy and Radiative Transfer, 148 (11), 165–176. doi:10.1016/j.jqsrt.2014.06.022

Photonics: general discussion.
Higgins, S.; Torsi, L.; Whitworth, G.; Laurand, N.; Zhang, S.; Samuel, I.; Ebenhoch, B.; Wudl, F.; Frey, G.; Bucinskas, A.; Inigo, J.; Perepichka, D.; Lemmer, U.; Skabara, P.; Ottosson, H.; Bradley, D.; McCulloch, I.; Bruckner, R.; Zysman-Colman, E.; Sasaki, T.; Fraboni, B.
2014. Faraday Discussions, 174, 235–253. doi:10.1039/C4FD90047B

Printing PPEs: Fundamental Structure - Property Relationships.
Markl, F.; Braun, I.; Smarsly, E.; Lemmer, U.; Mechau, N.; Hernandez-Sosa, G.; Bunz, U. H. F.
2014. ACS Macro Letters, 3 (8), 788–790. doi:10.1021/mz500340t

Solution Processed, White Emitting Tandem Organic Light-Emitting Diodes with Inverted Device Architecture.
Höfle, S.; Schienle, A.; Bernhard, C.; Bruns, M.; Lemmer, U.; Colsmann, A.
2014. Advanced materials, 26 (30), 5155–5159. doi:10.1002/adma.201400332

Impact of processing on the chemical and electronic properties of phenyl-C61-butyric acid methyl ester.
Maibach, J.; Adermann, T.; Glaser, T.; Eckstein, R.; Mankel, E.; Pucci, A.; Müllen, K.; Lemmer, U.; Hamburger, M.; Mayer, T.; Jaegermann, W.
2014. Journal of materials chemistry / C, 2 (37), 7934–7942. doi:10.1039/C4TC00769G

Influence of the Emission Layer Thickness on the Optoelectronic Properties of Solution Processed Organic Light-Emitting Diodes.
Höfle, S.; Lutz, T.; Egel, A.; Nickel, F.; Kettlitz, S. W.; Gomard, G.; Lemmer, U.; Colsmann, A.
2014. ACS photonics, 1 (10), 968–973. doi:10.1021/ph500186m

Processing Follows Function: Pushing the Formation of Self-Assembled Monolayers to High-Throughput Compatible Time Scales.
Alt, M.; Schinke, J.; Hillebrandt, S.; Hänsel, M.; Hernandez-Sosa, G.; Mechau, N.; Glaser, T.; Mankel, E.; Hamburger, M.; Deing, K.; Jaegermann, W.; Pucci, A.; Kowalsky, W.; Lemmer, U.; Lovrincic, R.
2014. ACS Applied Materials and Interfaces, 6 (22), 20234–20241. doi:10.1021/am5057689

Photocurrent imaging of semiconducting carbon nanotube devices with local mirrors.
Alam, A.; Flavel, B. S.; Dehm, S.; Lemmer, U.; Krupke, R.
2014. Physica Status Solidi / B, 251 (12), 2471–2474. doi:10.1002/pssb.201451272

Synthesis and application of photolithographically patternable deep blue emitting poly(3,6-Dimethoxy-9,9-dialkylsilafluorene)s.
McDowell, J. J.; Maier-Flaig, F.; Wolf, T. J. A.; Unterreiner, A.-N.; Lemmer, U.; Ozin, G.
2014. ACS Applied Materials and Interfaces, 6 (1), 83–93. doi:10.1021/am4025406

Organic semiconductor distributed feedback laser pixels for lab-on-a-chip applications fabricated by laser-assisted replication.
Liu, X.; Prinz, S.; Besser, H.; Pfleging, W.; Wissmann, M.; Vannahme, C.; Guttmann, M.; Mappes, T.; Koeber, S.; Koos, C.; Lemmer, U.
2014. Faraday discussions, 174 (Sept), 153–164. doi:10.1039/C4FD00077C

Suppressing molecular aggregation in solution processed small molecule organic light emitting diodes.
Höfle, S.; Pfaff, M.; Do, H.; Bernhard, C.; Gerthsen, D.; Lemmer, U.; Colsmann, A.
2014. Organic Electronics: physics, materials, applications, 15 (1), 337–341. doi:10.1016/j.orgel.2013.11.015

Surface-enhanced Raman spectroscopy (SERS) using nanopillar arrays as functional substrates and an organic semiconductor DFB laser as excitation source.
Liu, X.; Lebedkin, S.; Pfleging, W.; Besser, H.; Wissmann, M.; Nazarenko, I.; Mappes, T.; Koeber, S.; Koos, C.; Kappes, M.; Lemmer, U.
2014. Laser Science to Photonic Applications (CLEO 2014), San Jose, Calif., June 8-13, 2014

3D replication of functional blue morpho butterfly nanostructures utilizing laser interference lithography.
Siddique, R. H.; Abrar, F.; Hünig, R.; Diewald, S.; Leuthold, J.; Lemmer, U.; Hölscher, H.
2014. IONS-15, Ankara, TR, July 2-6, 2014

Solid state and liquid core: Integrating dye lasers for lab-on-a-chip applications.
Wienhold, T.; Großmann, T.; Bog, U.; Liu, X.; Klinkhammer, S.; Vannahme, C.; Beck, T.; Laue, T.; Köber, S.; Koos, C.; Hirtz, M.; Kristensen, A.; Lemmer, U.; Kalt, H.; Mappes, T.
2014. 4th International Conference on Optofluidics, Guangzhou, China, August 28-30, 2014

Superresolution optical fluctuation imaging (SOFI) aided nanomanipulation using AFM for novel artificial arrangements of chemically functionalized colloidal quantum dots and plasmonic structures.
Dopf, K.; Heunisch, S.; Schwab, P.; Moosmann, C.; Habermehl, A.; Lemmer, U.; Eisler, H. J.
2014. Photonics Europe, Bruxelles, B, April 14-17, 2014

Particle detection from spatially modulated fluorescence signals.
Kettlitz, S. W.; Moosmann, C.; Valouch, S.; Lemmer, U.
2014. Photonics Europe, Bruxelles, B, April 14-17, 2014

Fluorescence particle detection using microfluidics and planar optoelectronic elements.
Kettlitz, S. W.; Moosmann, C.; Valouch, S.; Lemmer, U.
2014. Photonics Europe, Bruxelles, B, April 14-17, 2014

RC-constant in organic photodiodes comprising electrodes with a significant sheet resistance.
Mescher, J.; Kettlitz, S. W.; Egel, A.; Moosmann, C.; Christ, N. S.; Valouch, S.; Lemmer, U.
2014. IEEE Photonics Technology Letters, 26 (6), 579–582. doi:10.1109/LPT.2014.2298918

2013

Extracting Substrate Modes from Flexible OLEDs.
Egel, A.; Bocksrocker, T.; Lemmer, U.
2013. Renewable Energy and the Environment Congress. Solid-State and Organic Lighting, SOLED 2013, Tucson, AZ, November 3-7, 2013, Optical Society of America, Washington (DC). doi:10.1364/SOLED.2013.DT2E.3

Solution-processed electrodes for efficient hybrid copper indium gallium diselenide thin film solar cells.
Reinhard, M.; Eckstein, R.; Sonntag, P.; Burkert, L.; Dimmler, B.; Lemmer, U.; Colsmann, A.
2013. 39th IEEE Photovoltaic Specialists Conference, PVSC 2013, Tampa, FL, United States, 16 - 21 June 2013, 3226–3228, IEEE, Piscataway (NJ). doi:10.1109/PVSC.2013.6745139

Tungsten oxide buffer layers fabricated in an inert sol-gel process at room-temperature for blue organic light-emitting diodes.
Höfle, S.; Bruns, M.; Strässle, S.; Feldmann, C.; Lemmer, U.; Colsmann, A.
2013. Advanced materials, 25 (30), 4113–4116. doi:10.1002/adma.201301627

Highly efficient fully flexible indium tin oxide free organic light emitting diodes fabricated directly on barrier-foil.
Bocksrocker, T.; Hülsmann, N.; Eschenbaum, C.; Pargner, A.; Höfle, S.; Maier-Flaig, F.; Lemmer, U.
2013. Thin Solid Films, 542, 306–309. doi:10.1016/j.tsf.2013.06.090

N-Fused quinoxalines and benzoquinoxalines as attractive emitters for organic light emitting diodes.
Lindner, B. D.; Zhang, Y.; Höfle, S.; Berger, N.; Teusch, C.; Jesper, M.; Hardcastle, K. I.; Qian, X.; Lemmer, U.; Colsmann, A.; Bunz, U. H. F.; Hamburger, M.
2013. Journal of Materials Chemistry C, 1 (36), 5718–5724. doi:10.1039/c3tc30828f

Molecular construction kit for tuning solubility, stability and luminescence properties: Heteroleptic MePyrPHOS-copper iodide-complexes and their application in organic light-emitting diodes.
Volz, D.; Zink, D. M.; Bocksrocker, T.; Friedrichs, J.; Nieger, M.; Baumann, T.; Lemmer, U.; Bräse, S.
2013. Chemistry of materials, 25 (17), 3414–3426. doi:10.1021/cm4010807

Preparation of near-infrared absorbing composites comprised of conjugated macroligands on the surface of PbS nanoparticles.
Zhang, J.; Bahrig, L.; Puetz, A.; Kanelidis, I.; Lenkeit, D.; Pelz, S.; Hickey, S. G.; Klein, M. F. G.; Colsmann, A.; Lemmer, U.; Eychmüller, A.; Holder, E.
2013. Polymer (United Kingdom), 54 (21), 5525–5533. doi:10.1016/j.polymer.2013.08.038

Additiveinfluss auf die Strukturbildung in Polymer-Fulleren-Gemischen für Polymersolarzellen.
Buss, F.; Colsmann, A.; Lemmer, U.; Barrena, E.; Scharfer, P.; Schabel, W.
2013. Chemie - Ingenieur - Technik, 85 (9), 1457. doi:10.1002/cite.201250720

Synthesis and characterization of star-shaped donor-acceptor-donor structures.
Pelz, S.; Zhang, J.; Kanelidis, I.; Klink, D.; Hyzak, L.; Wulf, V.; Schmitz, O. J.; Gasse, J.-C.; Frahm, R.; Pütz, A.; Colsmann, A.; Lemmer, U.; Holder, E.
2013. European Journal of Organic Chemistry, (22), 4761–4769. doi:10.1002/ejoc.201300357

TIPS-tetracene- and TIPS-pentacene-annulated poly(norbornadiene)s: Synthesis and properties.
Porz, M.; Paulus, F.; Höfle, S.; Lutz, T.; Lemmer, U.; Colsmann, A.; Bunz, U. H. F.
2013. Macromolecular Rapid Communications, 34 (20), 1611–1617. doi:10.1002/marc.201300557

Monolithic hybrid tandem solar cells comprising copper indium gallium diselenide and organic subcells.
Reinhard, M.; Sonntag, P.; Eckstein, R.; Bürkert, L.; Bauer, A.; Dimmler, B.; Lemmer, U.; Colsmann, A.
2013. Applied Physics Letters, 103 (14). doi:10.1063/1.4824017

Three-dimensional reciprocal space profile of an individual nanocrystallite inside a thin-film solar cell absorber layer.
Slobodskyy, T.; Schroth, P.; Minkevich, A.; Grigoriev, D.; Fohtung, E.; Riotte, M.; Baumbach, T.; Powalla, M.; Lemmer, U.; Slobodskyy, A.
2013. Journal of Physics D: Applied Physics, 46 (47), 475104/1–5. doi:10.1088/0022-3727/46/47/475104

Gravure printed flexible small-molecule organic light emitting diodes.
Tekoglu, S.; Hernandez-Sosa, G.; Kluge, E.; Lemmer, U.; Mechau, N.
2013. Organic Electronics: physics, materials, applications, 14 (12), 3493–3499. doi:10.1016/j.orgel.2013.09.027

Pump spot size dependent lasing threshold in organic semiconductor DFB lasers fabricated via nanograting transfer.
Liu, X.; Klinkhammer, S.; Wang, Z.; Wienhold, T.; Vannahme, C.; Jakobs, P.-J.; Bacher, A.; Muslija, A.; Mappes, T.; Lemmer, U.
2013. Optics express, 21 (23), 27697–27706. doi:10.1364/OE.21.027697

Organic semiconductor distributed feedback (DFB) laser as excitation source in Raman spectroscopy.
Liu, X.; Stefanou, P.; Wang, B.; Woggon, T.; Mappes, T.; Lemmer, U.
2013. Optics Express, 21 (23), 28941–28947. doi:10.1364/oe.21.028941

Hybrid lithography: Combining UV-exposure and two photon direct laser writing.
Eschenbaum, C.; Großmann, D.; Dopf, K.; Kettlitz, S.; Bocksrocker, T.; Valouch, S.; Lemmer, U.
2013. Optics Express, 21 (24), 29921–29926. doi:10.1364/OE.21.029921

Micro-spherically textured organic light emitting diodes: A simple way towards highly increased light extraction.
Bocksrocker, T.; Hoffmann, J.; Eschenbaum, C.; Pargner, A.; Preinfalk, J.; Maier-Flaig, F.; Lemmer, U.
2013. Organic Electronics, 14 (1), 396–401. doi:10.1016/j.orgel.2012.10.036

Material-based three-dimensional imaging with nanostructured surfaces.
Nazirizadeh, Y.; Reverey, J.; Geyer, U.; Lemmer, U.; Selhuber-Unkel, C.; Gerken, M.
2013. Applied Physics Letters, 102 (1), 011116. doi:10.1063/1.4773875

Solution-processed polymer-silver nanowire top electrodes for inverted semi-transparent solar cells.
Reinhard, M.; Eckstein, R.; Slobodskyy, A.; Lemmer, U.; Colsmann, A.
2013. Organic Electronics, 14 (01/2013), 273–277. doi:10.1016/j.orgel.2012.10.039

Inverted Semi-transparent Polymer Solar Cells with Transparency Color Rendering Indices approaching 100.
Czolk, J.; Pütz, A.; Kutsarov, D.; Reinhard, M.; Lemmer, U.; Colsmann, A.
2013. Advanced Energy Materials, 3 (3), 386–390. doi:10.1002/aenm.201200532

Multicolor silicon light-emitting diodes (SiLEDs).
Maier-Flaig, F.; Rinck, J.; Stephan, M.; Bocksrocker, T.; Bruns, M.; Kübel, C.; Powell, A. K.; Ozin, G. A.; Lemmer, U.
2013. Nano letters, 13 (2), 475–480. doi:10.1021/nl3038689

Cadmium-free copper indium gallium diselenide hybrid solar cells comprising a 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole buffer layer.
Reinhard, M.; Simon, C.; Kuhn, J.; Bürkert, L.; Cemernjak, M.; Dimmler, B.; Lemmer, U.; Colsmann, A.
2013. Applied Physics Letters, 102 (6), 063304. doi:10.1063/1.4792507

Intensity dependent but temperature independent charge carrier generation in organic photodiodes and solar cells.
Christ, N.; Kettzlitz, S. W.; Valouch, S.; Mescher, J.; Nintz, M.; Lemmer, U.
2013. Organic Electronics, 14 (3), 973–978. doi:10.1016/j.orgel.2013.01.011

Investigating the influences of the precise manufactured shape of dipole nanoantennas on their optical properties.
Moosmann, C.; Sigurdsson, G. S.; Wissert, M. D.; Dopf, K.; Lemmer, U.; Eisler, H.-J.
2013. Optic Express, 21 (1), 594–604. doi:10.1364/OE.21.000594

Cross sections of operating Cu(In,Ga)Se2 thin-film solar cells under defined white light illumination analyzed by Kelvin probe force microscopy.
Zhang, Z.; Hetterich, M.; Lemmer, U.; Powalla, M.; Hoelscher, H.
2013. Applied physics letters, 102 (2), 023903/1–6. doi:10.1063/1.4775679

Eliminating RC-effects in transient photocurrent measurements on organic photodiodes.
Kettlitz, S.; Mescher, J.; Christ, N.; Nintz, M.; Valouch, S.; Colsmann, A.; Lemmer, U.
2013. IEEE Photonics Technology Letters (PTL), 25 (7), 682–685. doi:10.1109/LPT.2013.2247036

Rheological and Drying Considerations for Uniformly Gravure-Printed Layers: Towards Large-Area Flexible Organic Light-Emitting Diodes.
Hernandez-Sosa, G.; Bornemann, N.; Ringle, I.; Agari, M.; Dörsam, E. r.; Mechau, N.; Lemmer, U.
2013. Advanced Functional Materials, 23 (25), 3164–3171. doi:10.1002/adfm.201202862

Statistics of Particle Detection From Single-Channel Fluorescence Signals for Flow Cytometric Applications.
Kettlitz, S. W.; Valouch, S.; Lemmer, U.
2013. IEEE Transactions on Instrumentation and Measurement, 62 (7), 1960–1971. doi:10.1109/TIM.2013.2248293

Looking Inside a Working SiLED.
Maier-Flaig, F.; Kübel, C.; Rinck, J.; Bocksrocker, T.; Scherer, T.; Prang, R.; Powell, A. K.; Ozin, G. A.; Lemmer, U.
2013. Nano letters, 13, 3539–3545. doi:10.1021/nl400975u

Single-mode biological distributed feedback laser.
Vannahme, C.; Maier-Flaig, F.; Lemmer, U.; Kristensen, A.
2013. Lab on a Chip, 13, 2675–2678. doi:10.1039/C3LC50140J

The role of nanotubes in carbon nanotube-silicon solar cells.
Tune, D. D.; Hennrich, F.; Dehm, S.; Klein, M. F. G.; Glaser, K.; Colsmann, A.; Shapter, J. G.; Lemmer, U.; Kappes, M. M.; Krupke, R.; Flavel, B. S.
2013. Advanced Energy Materials, 3 (8), 1091–1097. doi:10.1002/aenm.201200949

Carbazole-Phenylbenzotriazole Copolymers as Absorber Material in Organic Solar Cells.
Klein, M. F. G.; Pasker, F. M.; Kowarik, S.; Landerer, D.; Pfaff, M.; Isen, M.; Gerthsen, D.; Lemmer, U.; Höger, S.; Colsmann, A.
2013. Macromolecules, 46 (10), 3870–3878. doi:10.1021/ma400440q

Molybdenum oxide anode buffer layers for solution processed, blue phosphorescent small molecule organic light emitting diodes.
Höfle, S.; Do, H.; Mankel, E.; Pfaff, M.; Zhang, Z.; Bahro, D.; Mayer, T.; Jaegermann, W.; Gerthsen, D.; Feldmann, C.; Lemmer, U.; Colsmann, A.
2013. Organic electronics, 14 (7), 1820–1824. doi:10.1016/j.orgel.2013.04.017

Dispersive transport in the temperature dependent transient photoresponse of organic photodiodes and solar cells.
Christ, N.; Kettlitz, S.; Mescher, J.; Valouch, S.; Lemmer, U.
2013. Journal of Applied Physics, 113, 234503–234503. doi:10.1063/1.4810897

The role of the polymer solid electrolyte molecular weight in light-emitting electrochemical cells.
Hernandez-Sosa, G.; Eckstein, R.; Tekoglu, S.; Becker, T.; Mathies, F.; Lemmer, U.; Mechau, N.
2013. Organic Electronics, 14 (9), 2223–2227. doi:10.1016/j.orgel.2013.05.040

Influence of the Ga Content on the Optical and Electrical Properties of CuIn1-xGaxSe2 Thin-Film Solar Cells.
Zhang, Z.; Witte, W.; Kiowski, O.; Lemmer, U.; Powalla, M.; Hölscher, H.
2013. 2012 IEEE 38th Photovoltaic Specialists Conference (PVSC), June 3-8 2012, Austin, Texas. Volume 2, 1–5, IEEE, Piscataway (NJ). doi:10.1109/PVSC-Vol2.2012.6656798

Semitransparente organische Solarzellen mit sehr guter Farbneutralität.
Czolk, J.; Pütz, A.; Vogeler, H.; Lemmer, U.; Colsmann, A.
2013. Chancen der Energiewende : wissenschaftliche Beiträge des KIT zur 1. Jahrestagung des KIT-Zentrums Energie, 19.06.2012. Hrsg.: W. Breh, 125–130, KIT Scientific Publishing, Karlsruhe

2012

Novel nano- and micro-textures for highly efficient outcoupling in white organic light emitting diodes.
Bocksrocker, T.; Eschenbaum, C.; Preinfalk, J. B.; Hoffmann, J.; Asche-Tauscher, J.; Maier-Flaig, F.; Lemmer, U.
2012. Renewable Energy and the Environment Optics and Photonics Congress - Solid-State and Organic Lighting (SOLED), Eindhoven, Netherlands, 11–14 November 2012, LM3A.4, OSA, The Optical Society, Washington (DC). doi:10.1364/SOLED.2012.LM3A.4

Computational investigation of silicon thin-film solar cells with grating structures fabricated by holographic lithography.
Theuring, M.; Lacombe, J.; Chakanga, K.; Hünig, R.; Huska, K.; Vehse, M.; Maydell, K. von; Lemmer, U.; Agert, C.
2012. SPIE Photonics Europe - Photonics for Solar Energy Systems IV, Brussels, Belgium, 16-19 April 2012. Ed.: R. Wehrspohn, 84381Q, SPIE, Bellingham (WA). doi:10.1117/12.921799

Efficiency Enhancement of Organic and Thin-Film Silicon Solar Cells with Photochemical Upconversion.
Schulze, T. F.; Czolk, J.; Cheng, Y.-Y.; Fückel, B.; MacQueen, R. W.; Khoury, T.; Crossley, M. J.; Stannowski, B.; Lips, K.; Lemmer, U.; Colsmann, A.; Schmidt, T. W.
2012. The journal of physical chemistry <Washington, DC> / C, 116 (43), 22794–22801. doi:10.1021/jp309636m

Zinc oxide nanorod arrays hydrothermally grown on a highly conductive polymer for inverted polymer solar cells.
Reinhard, M.; Conradt, J.; Braun, M.; Colsmann, A.; Lemmer, U.; Kalt, H.
2012. Synthetic metals, 162 (17-18), 1582–1586. doi:10.1016/j.synthmet.2012.06.018

Solution processable, precursor based zinc oxide buffer layers for 4.5% efficient organic tandem solar cells.
Puetz, A.; Steiner, F.; Mescher, J.; Reinhard, M.; Christ, N.; Kutsarov, D.; Kalt, H.; Lemmer, U.; Colsmann, A.
2012. Organic electronics, 13 (11), 2696–2701. doi:10.1016/j.orgel.2012.07.043

Nanomorphology of P3HT:PCBM-based Organic Solar Cells Analyzed by Low-Energy Scanning Transmission Electron Microscopy.
Pfaff, M.; Müller, E.; Müller, P.; Gerthsen, D.; Klein, M. G.; Colsmann, A.; Lemmer, U.
2012. Microscopy and microanalysis, 18 (S2), 1234–1235. doi:10.1017/S1431927612008021

Direct fabrication of PDMS waveguides via lowcost DUV irradiation for optical sensing.
Valouch, S.; Sieber, H.; Kettlitz, S.; Eschenbaum, C.; Hollenbach, U.; Lemmer, U.
2012. Optics express, 20 (27), 28855–28861. doi:10.1364/OE.20.028855

Nanomorphology of P3HT:PCBM-based Organic Solar Cells Analyzed by Low-Energy Scanning Transmission Electron Microscopy.
Pfaff, M.; Klein, M. G.; Müller, E.; Müller, P.; Colsmann, A.; Lemmer, U.; Gerthsen, D.
2012. Microscopy and Microanalysis, 18 (6), 1380–1388. doi:10.1017/S143192761201344X

Novel nano- and micro-textures for highly efficient outcoupling in white organic light emitting diodes.
Bocksrocker, T.; Eschenbaum, C.; Preinfalk, J. B.; Hoffmann, J.; Asche-Tauscher, J.; Maier-Flaig, F.; Lemmer, U.
2012. OSA Technical Digest: Renewable Energy and the Environment Optics and Photonics Congress, Eindhoven, Netherlands, November 11-15, 2012, paper LM3A.4, Optical Society of America, Washington (DC)

Investigation of non-halogenated solvent mixtures for high throughput fabrication of polymer-fullerene solar cells.
Schmidt-Hansberg, B.; Sanyal, M.; Grossiord, N.; Galagan, Y.; Baunach, M.; Klein, M.; Colsmann, A.; Scharfer, P.; Lemmer, U.; Dosch, H.; Michels, J.; Barrena, E.; Schabel, W.
2012. Solar Energy Materials and Solar Cells, 96, 195–201. doi:10.1016/j.solmat.2011.09.059

Poly(3-hexylselenophene) solar cells : Correlating the optoelectronic device performance and nanomorphology imaged by low-energy scanning Transmission electron microscopy.
Klein, M. F. G.; Pfaff, M.; Müller, E.; Czolk, J.; Reinhard, M.; Valouch, S.; Lemmer, U.; Colsmann, A.; Gerthsen, D.
2012. Journal of polymer science / B, 50 (3), 198–206. doi:10.1002/polb.22394

Flexible planar microfluidic chip employing a light emitting diode and a PIN-photodiode for portable flow cytometers.
Kettlitz, S. W.; Valouch, S.; Sittel, W.; Lemmer, U.
2012. Lab on a Chip, 12 (1), 197–203. doi:10.1039/C1LC20672A

Inverted semi-transparent organic solar cells with spray coated, surfactant free polymer top-electrodes.
Colsmann, A.; Reinhard, M.; Kwon, T.-H.; Kayser, C.; Nickel, F.; Czolk, J.; Lemmer, U.; Clark, N.; Jasieniak, J.; Holmes, A. B.; Jones, D.
2012. Solar Energy Materials and Solar Cells, 98, 118–123. doi:10.1016/j.solmat.2011.10.016

Size-Dependent Absolute Quantum Yields for Size-Separated Colloidally-Stable Silicon Nanocrystals.
Mastronardi, M. L.; Maier-Flaig, F.; Faulkner, D. O.; Henderson, E. J.; Kübel, C.; Lemmer, U.; Ozin, G. A.
2012. Nano Letters, 12 (1), 337–342. doi:10.1021/nl2036194

Efficient waveguide mode extraction in white organic light emitting diodes using ITO-anodes with integrated MgF2-columns.
Bocksrocker, T.; Maier-Flaig, F.; Eschenbaum, C.; Lemmer, U.
2012. Optics Express, 20 (6), 6170–6174. doi:10.1364/OE.20.006170

Thickness-Dependent Transient Photocurrent Response of Organic Photodiodes.
Valouch, S.; Nintz, M.; Kettlitz, S. W.; Christ, N. S.; Lemmer, U.
2012. IEEE Photonics Technology Letters, 24 (7), 596–598. doi:10.1109/LPT.2012.2184276

Design of plasmonic grating structures towards optimum signal discrimination for biosensing applications.
Bog, U.; Huska, K.; Maerkle, F.; Nesterov-Mueller, A.; Lemmer, U.; Mappes, T.
2012. Optics express, 20 (10), 11357–11369. doi:10.1364/OE.20.011357

Reevaluation of the beneficial effect of Cu(In,Ga)Se₂ grain boundaries using Kelvin probe force microscopy.
Zhang, Z.; Tang, X.; Kiowski, O.; Hetterich, M.; Lemmer, U.; Powalla, M.; Hölscher, H.
2012. Applied Physics Letters, 100 (20), 203903/1–4. doi:10.1063/1.4714905

Spatial mapping of photocurrents in organic solar cells comprising wedge-shaped absorber layers for an efficient material screening.
Nickel, F.; Sprau, C.; Klein, M. F. G.; Kapetana, P.; Christ, N.; Liu, X.; Klinkhammer, S.; Lemmer, U.; Colsmann, A.
2012. Solar Energy Materials and Solar Cells, 104, 18–22. doi:10.1016/j.solmat.2012.04.026

Photonic crystal slabs for surface contrast enhancement in microscopy of transparent objects.
Nazirizadeh, Y.; Becker, T.; Reverey, J.; Selhuber-Unkel, C.; Rapoport, D. H.; Lemmer, U.; Gerken, M.
2012. Optics Express, 20 (13), 14451–14459. doi:10.1364/OE.20.014451

Oligomers Comprising 2-Phenyl-2H-Benzotriazole Building Blocks for Solution Processible Organic Photovoltaic Devices.
Klein, M. F. G.; Pasker, F.; Wettach, H.; Gadaczek, I.; Bredow, T.; Zilkens, P.; Voehringer, P.; Lemmer, U.; Höger, S.; Colsmann, A.
2012. The journal of physical chemistry <Washington, DC> / C, 116 (31), 16358–16364. doi:10.1021/jp3039384

Ink-Jet-Printed Organic Semiconductor Distributed Feedback Laser.
Liu, X.; Klinkhammer, S.; Sudau, K.; Mechau, N.; Vannahme, C.; Kascke, J.; Mappes, T.; Wegener, M.; Lemmer, U.
2012. Applied physics express, 5, Art.Nr. 072101. doi:10.1143/APEX.5.072101

Solution processed sodium chloride interlayers for efficient electron extraction from polymer solar cells.
Nickel, F.; Reinhard, M.; Zhang, Z.; Pütz, A.; Kettlitz, S. W.; Lemmer, U.; Colsmann, A.
2012. Applied Physics Letters, 101 (5), 053309/1–3. doi:10.1063/1.4742161

Influence of the spatial photocarrier generation profile on the performance of organic solar cells.
Mescher, J.; Christ, N.; Kettlitz, S. W.; Colsmann, A.; Lemmer, U.
2012. Applied Physics Letters, 101 (7), 073301/1–4. doi:10.1063/1.4745601

Photophysics of organically-capped silicon nanocrystals : A closer look into silicon nanocrystal luminescence using low temperature transient spectroscopy.
Maier-Flaig, F.; Henderson, E. J.; Valouch, S.; Klinkhammer, S.; Kübel, C.; Ozin, G. A.; Lemmer, U.
2012. Chemical physics, 405, 175–180. doi:10.1016/j.chemphys.2012.07.009

Solution processed small molecule organic interfacial layers for low dark current polymer photodiodes.
Valouch, S.; Hönes, C.; Kettlitz, S. W.; Christ, N.; Do, H.; Klein, M. F. G.; Kalt, H.; Colsmann, A.; Lemmer, U.
2012. Organic Electronics, 13 (11), 2727–2732. doi:10.1016/j.orgel.2012.07.044

Structure Formation in Low-Bandgap Polymer: Fullerene Solar Cell Blends in the Course of Solvent Evaporation.
Schmidt-Hansberg, B.; Klein, M. F. G.; Sanyal, M.; Buss, F.; Medeiros, G. Q. G. de; Munuera, C.; Vorobiev, A.; Colsmann, A.; P. Scharfer, P.; Lemmer, U.; Barrena, E.; Schabel, W.
2012. Macromolecules, 45 (19), 7948–7955. doi:10.1021/ma300945k

White organic light emitting diodes with enhanced internal and external outcoupling for ultra-efficient light extraction and Lambertian emission.
Bocksrocker, T.; Preinfalk, J. B.; Asche-Tauscher, J.; Pargner, A.; Eschenbaum, C.; Maier-Flaig, F.; Lemmer, U.
2012. Optics Express, 20 (23), A932-A940. doi:10.1364/OE.20.00A932

2011

Nanosecond response organic photodiodes: From device physics towards biosensor applications.
Valouch, S.; Kettlitz, S. W.; Christ, N.; Züfle, S.; Ögün, C. M.; Nintz, M.; Lemmer, U.
2011. MRS online proceedings library, 1358, mrss11–1358-mm06. doi:10.1557/opl.2011.1014

Photovoltaic response to structural modifications on a series of conjugated polymers based on 2-aryl-2H-benzotriazoles.
Pasker, F. M.; Klein, M. F. G.; Sanyal, M.; Barrena, E.; Lemmer, U.; Colsmann, A.; Höger, S.
2011. Journal of polymer science / A, 49 (23), 5001–5011. doi:10.1002/pola.24959

Colloidally Stable Silicon Nanocrystals with Near-Infrared Photoluminescence for Biological Fluorescence Imaging.
Henderson, E. J.; Shuhendler, A. J.; Prasad, P.; Baumann, V.; Maier-Flaig, F.; Faulkner, D. O.; Lemmer, U.; Wu, X. Y.; Ozin, G. A.
2011. Small, 7 (17), 2507–2516. doi:10.1002/smll.201100845

Temperature dependent photoresponse from colloidal PbS quantum dot sensitized inorganic/organic hybrid photodiodes.
Pichler, S.; Rauch, T.; Seyrkammer, R.; Böberl, M.; Tedde, S. F.; Fürst, J.; Kovalenko, M. V.; Lemmer, U.; Hayden, O.; Heiss, W.
2011. Applied physics letters, 98 (5), 053304. doi:10.1063/1.3552678

Periodic nanostructuring for guided mode extraction in organic light-emitting diodes.
Hauss, J.; Riedel, B.; Gleiss, S.; Geyer, U.; Lemmer, U.; Gerken, M.
2011. Journal of photonics for energy, 1 (1), Art.Nr. 011012. doi:10.1117/1.3544495

Tailored Highly Transparent Composite Hole-Injection Layer Consisting of Pedot:PSS and SiO2 Nanoparticles for Efficient Polymer Light-Emitting Diodes.
Riedel, B.; Shen, Y.; Hauss, J.; Aichholz, M.; Tang, X.; Lemmer, U.; Gerken, M.
2011. Advanced Materials, 23 (6), 740–745. doi:10.1002/adma.201003490

Inverted organic solar cells comprising a solution-processed cesium fluoride interlayer.
Reinhard, M.; Hanisch, J.; Zhang, Z.-H.; Ahlswede, E.; Colsmann, A.; Lemmer, U.
2011. Applied Physics Letters, 98 (5), 053303/1–3. doi:10.1063/1.3548860

Spatially resolved drying kinetics of multi-component solution cast films for organic electronics.
Schmidt-Hansberg, B.; Baunach, M.; Krenn, J.; Walheim, S.; Lemmer, U.; Scharfer, P.; Schabel, W.
2011. Chemical Engineering and Processing: Process Intensification, 50 (5-6), 509–515. doi:10.1016/j.cep.2010.12.012

Gold nanoantenna resonance diagnostics via transversal particle plasmon luminescence.
Wissert, M. D.; Moosmann, C.; IIin, K. S.; Siegel, M.; Lemmer, U.; Eisler, H.-J.
2011. Optics Express, 19 (4), 3686–3693. doi:10.1364/OE.19.003686

Lasing in dye-doped high-Q conical polymeric microcavities.
Grossmann, T.; Schleede, S.; Hauser, M.; Christiansen, M. B.; Vannahme, C.; Eschenbaum, C.; Klinkhammer, S.; Beck, T.; Fuchs, J.; Nienhaus, G. U.; Lemmer, U.; Kristensen, A.; Mappes, T.; Kalt, H.
2011. Laser resonators and beam control XIII, San Francisco, California, United States, 23 - 25 January 2011. Ed.: A. V. Kudryashov, 79130 Y, SPIE, Bellingham (Wash.)

Quantum dots as single-photon sources: Antibunching via two-photon excitation.
Wissert, M. D.; Rudat, B.; Lemmer, U.; Eisler, H.-J.
2011. Physical Review B, 83 (11), 113304/1–4. doi:10.1103/PhysRevB.83.113304

Polymer light-emitting diodes with inorganic nanocomposite interlayers for efficiency enhancement.
Riedel, B.; Hauss, J.; Shen, Y.; Aichholz, M.; Lemmer, U.; Gerken, M.
2011. Journal of Photonics for Energy, 1 (1), 011018. doi:10.1117/1.3569102

Nanograting transfer for light extraction in organic light-emitting devices.
Wang, Z.; Hauss, J.; Vannahme, C.; Bog, U.; Klinkhammer, S.; Zhao, D.; Gerken, M.; Mappes, T.; Lemmer, U.
2011. Applied Physics Letters, 98 (14), 143105/1–3. doi:10.1063/1.3572336

In Situ X-Ray Study of Drying-Temperature Influence on the Structural Evolution of Bulk-Heterojunction Polymer-Fullerene Solar Cells Processed by Doctor-Blading.
Sanyal, M.; Schmidt-Hansberg, B.; Klein, M. F. G.; Colsmann, A.; Munuera, C.; Vorobiev, A.; Lemmer, U.; Schabel, W.; Dosch, H.; Barrena, E.
2011. Advanced Energy Materials, 1 (3), 363–367. doi:10.1002/aenm.201100007

Effect of Photovoltaic Polymer/Fullerene Blend Composition Ratio on Microstructure Evolution during Film Solidification Investigated in Real Time by X-ray Diffraction.
Sanyal, M.; Schmidt-Hansberg, B.; Klein, M. F. G.; Munuera, C.; Vorobiev, A.; Colsmann, A.; Scharfer, P.; Lemmer, U.; Schabel, W.; Dosch, H.; Barrena, B.
2011. Macromolecules, 44 (10), 3795–3800. doi:10.1021/ma2000338

Efficient Semi-Transparent Organic Solar Cells with Good Transparency Color Perception and Rendering Properties.
Colsmann, A.; Pütz, A.; Bauer, A.; Hanisch, J.; Ahlswede, E.; Lemmer, U.
2011. Advanced Energy Materials, 1 (4), 599–603. doi:10.1002/aenm.201000089

Nanosecond response of organic solar cells and photodiodes: Role of trap states.
Christ, N.; Kettlitz, S. W.; Züfle, S.; Valouch, S.; Lemmer, U.
2011. Physical Review B, 83 (19), 195211/1–5. doi:10.1103/PhysRevB.83.195211

Low-energy electron scattering in carbon-based materials analyzed by scanning transmission electron microscopy and its application to sample thickness determination.
Pfaff, M.; Müller, E.; Klein, M. F. G.; Colsmann, A.; Lemmer, U.; Krzyzanek, V.; Reichelt, R.; Gerthsen, D.
2011. Journal of Microscopy, 243 (1), 31–39. doi:10.1111/j.1365-2818.2010.03475.x

On the interplay of waveguide modes and leaky modes in corrugated OLEDs.
Hauss, J.; Bocksrocker, T.; Riedel, B.; Lemmer, U.; Gerken, M.
2011. Optics Express, 19 (S4), A851-A858. doi:10.1364/OE.19.00A851

Voltage-controlled tuning of an organic semiconductor distributed feedback laser using liquid crystals.
Klinkhammer, S.; Heussner, N.; Huska, K.; Bocksrocker, T.; Geislhöringer, F.; Vannahme, C.; Mappes, T.; Lemmer, U.
2011. Applied Physics Letters, 99 (2), 023307/1–3. doi:10.1063/1.3610473

A dendronised polymer for bulk heterojunction solar cells.
Yu, J.; Lee, K. H.; Zhang, Y.; Klein, M. F. G.; Colsmann, A.; Lemmer, U.; Burn, P. L.; Lo, S.-C.; Meredith, P.
2011. Polymer Chemistry, 2 (11), 2668–2673. doi:10.1039/c1py00301a

Electroluminescence from chirality-sorted (9,7)-semiconducting carbon nanotube devices.
Pfeiffer, M. H. P.; Stürzl, N.; Marquardt, C. W.; Engel, M.; Dehm, S.; Hennrich, F.; Kappes, M. M.; Lemmer, U.; Krupke, R.
2011. Optics Express, 19 (23), A1184-A1189. doi:10.1364/OE.19.0A1184

Metallic Bragg-gratings for light management in organic light-emitting devices.
Hauss, J.; Bocksrocker, T.; Riedel, B.; Geyer, U.; Lemmer, U.; Gerken, M.
2011. Applied physics reviews, 99 (10), 103303/1–3

Photophysical properties of fluorescently-labeled peptoids.
Rudat, B.; Birtalan, E.; Vollrath, S. B. L.; Fritz, D.; Kölmel, D. K.; Nieger, M.; Schepers, U.; Müllen, K.; Eisler, H.-J.; Lemmer, U.; Bräse, S.
2011. European Journal of Medicinal Chemistry, 46 (9), 4457–4465. doi:10.1016/j.ejmech.2011.07.020

Preparation of Monodisperse Silicon Nanocrystals Using Density Gradient Ultracentrifugation.
Mastronardi, M. L.; Hennrich, F.; Henderson, E. J.; Maier-Flaig, F.; Blum, C.; Reichenbach, J.; Lemmer, U.; Kübel, C.; Wang, D.; Kappes, M. M.; Ozin, G. A.
2011. Journal of the American Chemical Society, 133 (31), 11928–11931. doi:10.1021/ja204865t

Moving Through the Phase Diagram: Morphology Formation in Solution Cast Polymer-Fullerene-Blend Films for Organic Solar Cells.
Schmidt-Hansberg, B.; Sanyal, M.; Klein, M. F. G.; Pfaff, M.; Schnabel, N.; Jaiser, S.; Vorobiev, A.; Müller, E.; Colsmann, A.; Scharfer, P.; Gerthsen, D.; Lemmer, U.; Barrena, E.; Schabel, W.
2011. ACS Nano, 5 (11), 8579–8590. doi:10.1021/nn2036279

Observations of PDDTT Subject to Thermal Treatment: Correlation between Performance and Order.
Yuen, J. D.; Kumar, R.; Seifter, J.; Valouch, S.; Zakhidov, D.; Moses, D.; Lemmer, U.; Heeger, A. J.; Wudl, F.
2011. Journal of the American Chemical Society, 133 (49), 19602–19605. doi:10.1021/ja207312f

Analysis of untreated cross sections of cu(In,Ga)Se₂ thin-film solar cells with varying Ga content using Kelvin probe force microscopy.
Zhang, Z.; Tang, X.; Lemmer, U.; Witte, W.; Kiowski, O.; Powalla, M.; Hölscher, H.
2011. Applied physics letters, 99, Art.Nr. 042111. doi:10.1063/1.3607954

Diode-Pumped Organic Semiconductor Microcone Laser.
Klinkhammer, S.; Grossmann, T.; Lüll, K.; Hauser, M.; Vannahme, C.; Mappes, T.; Kalt, H.; Lemmer, U.
2011. IEEE photonics technology letters, 23 (8), 489–491. doi:10.1109/LPT.2011.2111417

Strongly confined, low-threshold laser modes in organic semiconductor microgoblets.
Grossmann, T.; Klinkhammer, S.; Hauser, M.; Floess, D.; Beck, T.; Vannahme, C.; Mappes, T.; Lemmer, U.; Kalt, H.
2011. Optics Express, 19 (10), 10009–10016. doi:10.1364/OE.19.010009

Plastic lab-on-a-chip for fluorescence excitation with integrated organic semiconductor lasers.
Vannahme, C.; Klinkhammer, S.; Lemmer, U.; Mappes, T.
2011. Optics Express, 19 (9), 8179–8186. doi:10.1364/OE.19.008179

2010

Methods to Enhance the Efficiency of Organic Light Emitting Devices.
Riedel, B.; Hauss, J.; Geyer, U.; Lemmer, U.; Gerken, M.
2010. Proceedings of the 4th International Symposium Technologies for Polymer Electronics (TPE 10), Rudolstadt, 18. - 20. Mai 2010. Ed.: H.-K. Roth, 267–272, Universitäts-Verlag, Ilmenau

Methods for Increasing the Efficiency of Organic Light Emitting Diodes.
Riedel, B.; Hauss, J.; Geyer, U.; Lemmer, U.; Gerken, M.
2010. Solid-State and Organic Lighting 2010 (SOLED), Karlsruhe Germany, 21–24 June 2010, SOTuB2, OSA, The Optical Society, Washington (D.C.). doi:10.1364/SOLED.2010.SOTuB2

Periodic Nanostructures Fabricated by Laser Interference Lithography for Guided Mode Extraction in OLEDs.
Hauss, J.; Riedel, B.; Bocksrocker, T.; Gleiss, S.; Huska, K.; Geyer, U.; Lemmer, U.; Gerken, M.
2010. Solid-State and Organic Lighting 2010 (SOLED) - [part of] Advanced Photonics and Renewable Energy, Karlsruhe, Germany, 21–24 June 2010, SOThB2/1–2, OSA, The Optical Society, Washington (DC). doi:10.1364/SOLED.2010.SOThB2

Low-speckle laser projection using farfield nonmodal emission of a broad-area vertical-cavity surface-emitting laser.
Craggs, G. M. J.; Riechert, F.; Meuret, Y.; Thienpont, H.; Lemmer, U.; Verschaffelt, G.
2010. SPIE Photonics Europe, Brussels, Belgium, 12-16 April 2010. Ed.: K. Panajotov, 772020, SPIE, Bellingham (WA). doi:10.1117/12.854427

Optical spectroscopy with organic semiconductor lasers.
Klinkhammer, S.; Woggon, T.; Vannahme, C.; Geyer, U.; Mappes, T.; Lemmer, U.
2010. SPIE Photonics Europe - Organic Photonics IV, Brussels, Belgium, 12 - 16 April 2010. Ed.: P. L. Heremans, 7722–53, SPIE, Bellingham (WA). doi:10.1117/12.854785

Integrated photonic lab-on-chip systems for biomedical applications.
Mappes, T.; Vannahme, C.; Klinkhammer, S.; Bog, U.; Schelb, M.; Grossmann, T.; Hauser, M.; Kalt, H.; Lemmer, U.
2010. Micro-optics 2010, 12 - 16 April 2010, Brussels, Belgium. Ed.: H. Thienpont, 7716–26, SPIE, Bellingham (Wash.). doi:10.1117/12.858205

Highly integrated biophotonics towards all-organic lab-on-chip systems.
Vannahme, C.; Klinkhammer, S.; Brinkmann, F.; Lenhert, S.; Grossmann, T.; Lemmer, U.; Mappes, T.
2010. SPIE Photonics Europe - Biophotonics: Photonic Solutions for Better Health Care II, Brussels, Belgium, 12 - 16 April 2010. Ed.: J. Popp, 77151H/1–10, SPIE, Bellingham (Wash.). doi:10.1117/12.856672

High Speed Fabrication of Toroidal Micro-Ring Resonators by Two Photon Direct Laser Writing.
Eschenbaum, C.; Woggon, T.; Lemmer, U.
2010. Nonlinear Photonics (NP), Karlsruhe, Germany, 21–24 June 2010, NThB8/1–2, Optical Society of America, Washington (DC). doi:10.1364/NP.2010.NThB8

Methods to Enhance the Efficiency of Organic Light Emitting Devices.
Riedel, B.; Hauss, J.; Kaiser, I.; Guetlein, J.; Geyer, U.; Huska, K.; Lemmer, U.; Gerken, M.
2010. Proceedings of the 4th International Symposium Technologies for Polymer Electronics (TPE 10), Rudolstadt, Germany, 18. - 20. May 2010. Ed.: H.-K. Roth, 267–272, Universitäts-Verlag, Ilmenau

Photophysics of peptoid transporters - From the ensemble down to the single-molecule level.
Rudat, B.; Vollrath, S.; Birtalan, E.; Eisler, H.-J.; Lemmer, U.; Balaban, T. S.; Bräse, S.
2010. Abstracts / 3rd International NanoBio Conference 2010, Zurich, Switzerland, August 24-27 2010, 218, AO Foundation, Davos

ac excitation of organic light emitting devices utilizing conductive charge generation layers.
Brückner, J.; Christ, N.; Bauder, O.; Gärtner, C.; Seyfried, M.; Glöckler, F.; Lemmer, U.; Gerken, M.
2010. Applied physics letters, 96 (4), 041107/1–3. doi:10.1063/1.3294326

Terahertz emission from lateral photo-Dember currents.
Klatt, G.; Hilser, F.; Qiao, W.; Beck, M.; Gebs, R.; Bartels, A.; Huska, K.; Lemmer, U.; Bastian, G.; Johnston, M. B.; Fischer, M.; Faist, J.; Dekorsy, T.
2010. Optics Express, 18 (5), 4939–4947. doi:10.1364/OE.18.004939

Integration of organic semiconductor lasers and single-mode passive waveguides into a PMMA substrate.
Vannahme, C.; Klinkhammer, S.; Kolew, A.; Jakobs, P.-J.; Guttmann, M.; Dehm, S.; Lemmer, U.; Mappes, T.
2010. Microelectronic Engineering, 87 (5-8), 693–695. doi:10.1016/j.mee.2009.12.077

Cathodes comprising highly conductive poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) for semi-transparent polymer solar cells.
Nickel, F.; Pütz, A.; Reinhard, M.; Do, H.; Kayser, C.; Colsmann, A.; Lemmer, U.
2010. Organic Electronics, 11 (4), 535–538. doi:10.1016/j.orgel.2009.12.009

Intermediate high index layer for laser mode tuning in organic semiconductor lasers.
Stroisch, M.; Woggon, T.; Teiwes-Morin, C.; Klinkhammer, S.; Forberich, K.; Gombert, A.; Gerken, M.; Lemmer, U.
2010. Optics Express, 18 (6), 5890–5895. doi:10.1364/OE.18.005890

Compact spectroscopy system based on tunable organic semiconductor lasers.
Woggon, T.; Klinkhammer, S.; Lemmer, U.
2010. Applied Physics B, Lasers and Optics, 99 (1), 47–51. doi:10.1007/s00340-010-3953-6

Deep blue organic light-emitting diodes based on triphenylenes.
Wettach, H.; Jester, S. S.; Colsmann, A.; Lemmer, U.; Rehmann, N.; Meerholz, K.; Höger, S.
2010. Synthetic metals, 160 (7/8), 691–700. doi:10.1016/j.synthmet.2010.01.003

Modular Synthesis and Electronic and Hole-Transport Properties of Monodisperse Oligophenothiazines.
Müller, T. J. J.; Franz, A. W.; Barkschat, C. S.; Sailer, M.; Meerholz, K.; Müller, D.; Colsmann, A.; Lemmer, U.
2010. Macromolecular Symposia, 287 (1), 1–7. doi:10.1002/masy.201050101

Highly localized non-linear optical white-light response at nanorod ends from non-resonant excitation.
Wissert, M. D.; Ilin, K. S.; Siegel, M.; Lemmer, U.; Eisler, H.-J.
2010. Nanoscale, 2 (6), 1018–1020. doi:10.1039/c0nr00025f

Polymer light emitting diodes containing nanoparticle clusters for improved efficiency.
Riedel, B.; Hauss, J.; Aichholz, M.; Gall, A.; Lemmer, U.; Gerken, M.
2010. Organic Electronics, 11 (7), 1172–1175. doi:10.1016/j.orgel.2010.04.017

Printed Circuit Board Integration and Encapsulation of High-Speed Polymer Photodiodes.
Valouch, S.; Ögün, C.; Kettlitz, S. W.; Züfle, S.; Christ, N.; Lemmer, U.
2010. Sensor Letters, 8 (3), 392–394. doi:10.1166/sl.2010.1283

Organic solar cell degradation probed by the nanosecond photoresponse.
Kettlitz, S. W.; Valouch, S.; Lemmer, U.
2010. Applied Physics A, Materials Science & Processing, 99 (4), 805–809. doi:10.1007/s00339-010-5747-4

Enhancing outcoupling efficiency of indium-tin-oxide-free organic light-emitting diodes via nanostructured high index layers.
Riedel, B.; Hauss, J.; Geyer, U.; Guetlein, J.; Lemmer, U.; Gerken, M.
2010. Applied Physics Letters, 96 (24), 243302/1–3. doi:10.1063/1.3455098

Organic Semiconductors for Thermoelectric Applications.
Scholdt, M.; Do, H.; Lang, J.; Gall, A.; Colsmann, A.; Lemmer, U.; Koenig, J.; Winkler, M.; Boettner, H.
2010. Journal of Electronic Materials, 39 (9), 1589–1592. doi:10.1007/s11664-010-1271-8

Low-threshold conical microcavity dye lasers.
Grossmann, T.; Schleede, S.; Hauser, M.; Christiansen, M. B.; Vannahme, C.; Eschenbaum, C.; Klinkhammer, S.; Beck, T.; Fuchs, J.; Nienhaus, G. U.; Lemmer, U.; Kristensen, A.; Mappes, T.; Kalt, H.
2010. Applied Physics Letters, 97 (6), 063304/1–3. doi:10.1063/1.3479532

Influence of temperature-dependent mobilities on the nanosecond response of organic solar cells and photodetectors.
Züfle, S.; Christ, N.; Kettlitz, S. W.; Valouch, S.; Lemmer, U.
2010. Applied Physics Letters, 97 (6), Art.Nr.:063306. doi:10.1063/1.3473818

Low-cost label-free biosensors using photonic crystals embedded between crossed polarizers.
Nazirizadeh, Y.; Bog, U.; Sekula, S.; Mappes, T.; Lemmer, U.; Gerken, M.
2010. Optics Express, 18 (18), 19120–19128. doi:10.1364/OE.18.019120

Coupled Nanoantenna Plasmon Resonance Spectra from Two-Photon Laser Excitation.
Wissert, M. D.; Ilin, K. S.; Siegel, M.; Lemmer, U.; Eisler, H.-J.
2010. Nano Letters, 10 (10), 4161–4165. doi:10.1021/nl102450x

Novel Pyridinium Dyes That Enable Investigations of Peptoids at the Single-Molecule Level.
Rudat, B.; Birtalan, E.; Thome, I.; KölmelD. K.; Horhoiu, V. L.; Wissert, M. D.; Lemmer, U.; Eisler, H.-J.; Balaban, T. S.; Bräse, S.
2010. The journal of physical chemistry <Washington, DC> / B, 114 (42), 13473–13480. doi:10.1021/jp103308s

Improving the outcoupling efficiency of indium-tin-oxide-free organic light-emitting diodes via rough internal interfaces.
Riedel, B.; Kaiser, I.; Hauss, J.; Lemmer, U.; Gerken, M.
2010. Optics Express, 18 (23), A631-A639. doi:10.1364/OE.18.00A631

All-polymer organic semiconductor laser chips : Parallel fabrication and encapsulation.
Vannahme, C.; Klinkhammer, S.; Christiansen, M. B.; Kolew, A.; Kristensen, A.; Lemmer, U.; Mappes, T.
2010. Optics express, 18 (24), 24881–24887. doi:10.1364/OE.18.024881

Optical and charge transport properties of a CuIn₁₋ₓGaₓSe₂ solar cell cross section.
Slobodskyy, A.; Wang, D.; Scherer, T.; Kübel, C.; Zhang, Z.-H.; Müller, E.; Gerthsen, D.; Powalla, M.; Lemmer, U.
2010. Physical Review B, 82 (20), 201105/1–4. doi:10.1103/PhysRevB.82.201105

In-depth analysis of the CuIn1-xGaxSe2 film for solar cells, structural and optical characterization.
Slobodskyy, A.; Slobodskyy, T.; Ulyanenkova, T.; Doyle, S.; Powalla, M.; Baumbach, T.; Lemmer, U.
2010. Applied Physics Letters, 97 (25), Art.Nr.:251911. doi:10.1063/1.3529939

Highly integrated biophotonics towards all-organic lab-on-chip systems.
Vannahme, C.; Klinkhammer, S.; Brinkmann, F.; Lenhert, S.; Grossmann, T.; Lemmer, U.
2010. Photonics Europe : Photonic Solutions for Better Health Care II (2010), Brüssel, Belgien, 12.–16. April 2010

2009

In situ monitoring the drying kinetics of knife coated polymer-fullerene films for organic solar cells.
Schmidt-Hansberg, B.; Klein, M. F. G.; Peters, K.; Buss, F.; Pfeifer, J.; Walheim, S.; Colsmann, A.; Lemmer, U.; Scharfer, P.; Schabel, W.
2009. Journal of Applied Physics, 106 (12), 124501/1–7. doi:10.1063/1.3270402

Hot Embossing of Micro- and Nanostructures for the Integration of Organic Semiconductor Lasers and Deep UV Induced Waveguides towards a Lab-on-chip System.
Lemmer, U.; Vannahme, C.; Klinkhammer, S.; Kolew, A.; Woggon, T.; Mappes, T.; Mohr, J.
2009. Proceedings of the 35th International Conference on Micro- and Nano-Engineering (MNE), September 28 - 1 October, 2009, Ghent, Belgium. Ed.: K. Ronse, Elsevier, Amsterdam

Printed Circuit Board Integration and Encapsulation of High-Speed Polymer Photodiodes.
Lemmer, U.; Valouch, S.; Ögün, C.; Kettlitz, S. W.; Züfle, S.
2009. Proceedings / E-MRS 2008 spring meeting, Strasbourg, France, May 26 - 30, 2008, Symposium L: Thin Film Chalcogenide Photovoltaic Materials. Ed.: R. Scheer, Elsevier, St. Louis (MO)

Auslegung eines vollfarbsteuerbaren High-Power-LED-Moduls.
Lemmer, U.; Scholdt, M.; Domhardt, A.; Wendel, S.
2009. Tagungsband / Lux junior 2009: 9. Forum für den lichttechnischen Nachwuchs, 25. bis 27.9.2009, Dörnfeld/Ilm; 1 CD-Rom, Techn. Univ., Ilmenau

Polymer biophotonic lab-on-chip devices with integrated organic semiconductor lasers.
Mappes, T.; Vannahme, C.; Klinkhammer, S.; Woggon, T.; Schelb, M.; Lenhert, S.; Mohr, J.; Lemmer, U.
2009. Proceedings / Organic semiconductors in sensors and bioelectronics II, 4 - 6 August 2009, San Diego, California, United States. Ed.: R. Shinar, Art.Nr. 74180A, SPIE, Bellingham (Wash.). doi:10.1117/12.825918

Light source modulation using light guide rods.
Lemmer, U.; Domhardt, A.; Wendel, S.; Rohlfing, U.
2009. Proceedings / Nonimaging optics: efficient design for illumination and solar concentration VI, 2 - 4 August 2009, San Diego, California, United States. Ed.: R. Winston, 74230Q/1–11, SPIE, Bellingham (Wash.)

Lichtquellenmodulation mit Lichtmischstäben.
Lemmer, U.; Wendel, S.; Domhardt, A.; Rohlfing, U.
2009. Tagungsband / Lux junior 2009: 9. Forum für den lichttechnischen Nachwuchs, 25. bis 27.9.2009, Dörnfeld/Ilm; 1 CD-Rom, Techn. Univ., Ilmenau

A continuously tunable low-threshold organic semiconductor distributed feedback laser fabricated by rotating shadow mask evaporation.
S. Klinkhammer; Woggon, T.; Geyer, U.; Vannahme, C.; Dehm, S.; Mappes, T.; Lemmer, U.
2009. Applied physics / B, 97 (4), 787–791. doi:10.1007/s00340-009-3789-0

Single-Molecule Spectroscopy on a Ladder-Type Conjugated Polymer: Electron-Phonon Coupling and Spectral Diffusion.
Lemmer, U.; Hildner, R.; Winterling, L.; Scherf, U.; Köhler, J.
2009. ChemPhysChem, 10 (14), 2524–2534

Large-area sub-micron gap interdigitated THz emitters fabricated by interference lithography and angle evaporation.
Lemmer, U.; Huska, K.; Klatt, G.; Hetterich, J.; Geyer, U.; Dekorsy, T.; Bastian, G.
2009. Electronics Letters, 45 (16), 851–853

Photonic stopband tuning of organic semiconductor distributed feedback lasers by oblique angle deposition of an intermediate high index layer.
Lemmer, U.; Stroisch, M.; Teiwes-Morin, C.; Woggon, T.; Gerken, M.; Forberich, K.; Gombert, A.
2009. Applied Physics Letters, 95 (2), 021112/1–3

Polymeric anodes from poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) for 3.5% efficient organic solar cells.
Lemmer, U.; Do, H.; Reinhard, M.; Vogeler, H.; Pütz, A.; Klein, M. F. G.; Colsmann, A.; Schabel, W.
2009. Thin Solid Films, 517 (20), 5900–5902

Near-infrared imaging with quantum-dot-sensitized organic photodiodes.
Lemmer, U.; Rauch, T.; Boberl, M.; Tedde, S. F.; Furst, J.; Kovalenko, M. V.; Hesser, G.; Heiss, W.; Hayden, O.
2009. Nature Photonics, 3 (6), 332–336

Far-Field Nonmodal Laser Emission for Low-Speckle Laser Projection.
Lemmer, U.; Riechert, F.; Craggs, G.; Meuret, Y.; Thienpont, H.; Verschaffelt, G.
2009. IEEE Photonics Technology Letters, 21 (20), 1487–1489

Laser speckle reduction via colloidal-dispersion-filled projection screens.
Lemmer, U.; Riechert, F.; Bastian, G.
2009. Applied Optics, 48 (19), 3742–3749

Design for optimized coupling of organic semiconductor laser light into polymer waveguides for highly integrated biophotonic sensors.
Timo, M.; Vannahme, C.; Schelb, M.; Lemmer, U.; Mohr, J.
2009. Microelectronic engineering, 86 (4-6), 1499–1501. doi:10.1016/j.mee.2009.01.076

Method to determine the speckle characteristics of front projection screens.
Lemmer, U.; Riechert, F.; Glöckler, F.
2009. Applied Optics, 48 (7), 1316–1321

Ray-based simulation of the propagation of light with different degrees of coherence through complex optical systems.
Lemmer, U.; Riechert, F.; Dürr, F.; Rohlfing, U.
2009. Applied Optics, 48 (8), 1527–1534

Plasma patterning of Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate) anodes for efficient polymer solar cells.
Lemmer, U.; Colsmann, A.; Stenzel, F.; Balthasar, G.; Do, H.
2009. Thin Solid Films, 517 (5), 1750–1752

Nanostructuring of organic-inorganic hybrid materials for distributed feedback laser resonators by two-photon polymerization.
Lemmer, U.; Woggon, T.; Kleiner, T.; Punke, M.
2009. Optics Express, 17 (4), 2500–2507

Formation and impact of hot spots on the performance of organic photovoltaic cells.
Lemmer, U.; Steim, R.; Choulis, S. A.; Schilinsky, P.; Brabec, C. J.
2009. Applied Physics Letters, 94 (4), 043304/1–3

Low-speckle laser projection with a broad-area vertical-cavity surface-emitting laser in the nonmodal emission regime.
Lemmer, U.; Riechert, F.; Craggs, G.; Meuret, Y.; van Giel, B.; Thienpont, H.; Verschaffelt, G.
2009. Applied Optics, 48 (4), 792–798

Nanosecond response of organic solar cells and photodetectors.
Lemmer, U.; Christ, N.; Kettlitz, S. W.; Valouch, S.; Züfle, S.; Gärtner, C.; Punke, M.
2009. Journal of Applied Physics, 105 (10), 104513/1–9

2008

Spatially resolved optical characterization of photonic crystal slabs using direct evaluation of photonic modes.
Lemmer, U.; Nazirizadeh, Y.; Geyer, U.; Gerken, M.
2008. Proceedings of the 2008 IEEE/LEOS International Conference on Optical MEMS and Nanophotonics, Freiburg, Germany, 11 - 14 August 2008, 112–113, IEEE, Piscataway (NJ)

Direct observation of photonic modes in photonic crystal slabs.
Lemmer, U.; Gerken, M.; Nazirizadeh, Y.; Müller, J. G.; Geyer, U.
2008. Proceedings of the 2008 10th Anniversary International Conference on Transparent Optical Networks, Athens, Greece, 22 - 26 June 2008. Ed.: M. Marciniak, 72–75, IEEE, Piscataway (NJ)

Optical Digital Audio Interconnect Composed of Organic Light Emitting Diodes and Organic Photodiodes as Optoelectronic Components.
Lemmer, U.; Valouch, S.; Kettlitz, S. W.; Punke, M.
2008. Proceedings of the Organic Semiconductor Conference (OSC 2008), 30 September-1 October 2008, Frankfurt, Germany, cintelliq, Cambridge

Relevanz und Optimierungsbedarf des Fußgängerschutzes im Straßenverkehr aus lichttechnischer Sicht.
Lemmer, U.; Jebas, C.; Manz, K.
2008. Proceedings / Licht 2008 - 18. Gemeinschaftstagung der Lichttechnischen Gesellschaften Deutschlands, Österreichs, der Schweiz und der Niederlande, Ilmenau, 10. bis 13. September 2008, 554–561, LiTG, Berlin

Ray-Based Simulation of the Propagatin of Coherent Light Trough Complex Optical Systems.
Lemmer, U.; Riechert, F.; Dürr, F.
2008. Proceedings / Technical digest of the Fourteenth Microoptics Conference, September 25 - 27, 2008, Diamant Conference and Business Centre, Brussels - Belgium, 123–124, The Microoptics Group, Tokyo

Low-Speckle Laser Projection with a Broad-Area VCSEL in the Incoherent Emission Regime.
Lemmer, U.; Riechert, F.; Verschaffelt, G.; Craggs, G.; Meuret, Y.; van Giel, B.; Thienpont, H.
2008. Proceedings / Technical digest of the Fourteenth Microoptics Conference, September 25 - 27, 2008, Diamant Conference and Business Centre, Brussels - Belgium, 290–291, The Microoptics Group, Tokyo

TIR optics for non-rotationally symmetric illumination design.
Lemmer, U.; Domhardt, A.; Rohlfing, U.; Weingaertner, S.
2008. Proceedings of the Illumination optics, 2 - 3 September 2008, Glasgow, United Kingdom. Ed.: T. E. Kidger, 710304/1–11, SPIE, Bellingham (Wash.)

New design tools for LED headlamps.
Lemmer, U.; Domhardt, A.; Kooß, D.; Manz, K.; Klinger, K.; Rohlfing, U.; Weingaertner, S.
2008. Proceedings of the Optical sensors 2008, 7 - 10 April 2008, Strasbourg, France. Ed.: F. Berghmans, 70032C/1–10, SPIE, Bellingham (Wash.)

Do advertisements at the roadside distract the driver?.
Lemmer, U.; Kettwich, C.; Klinger, K.
2008. Proceedings of the Optical sensors 2008, 7 - 10 April 2008, Strasbourg, France. Ed.: F. Berghmans, 70032J/1–5, SPIE, Bellingham (Wash.)

New headlamp technologies.
Lemmer, U.; Jebas, C.; Klinger, K.
2008. Proceedings of the Optical sensors 2008, 7 - 10 April 2008, Strasbourg, France. Ed.: F. Berghmans, 70032A/1–7, SPIE, Bellingham (Wash.)

Experimental quality factor determination of guided-mode resonances in photonic crystal slabs.
Lemmer, U.; Nazirizadeh, Y.; Gerken, M.
2008. Applied Physics Letters, 93 (26), 261110/1–3

Large-scale patterning of indium tin oxide electrodes for guided mode extraction from organic light-emitting diodes.
Lemmer, U.; Geyer, U.; Hauss, J.; Riedel, B.; Gleiss, S.; Gerken, M.
2008. Journal of Applied Physics, 104 (9), 093111/1–5

Optical characterization of photonic crystal slabs using orthogonally oriented polarization filters.
Lemmer, U.; Nazirizadeh, Y.; Müller, J. G.; Geyer, U.; Schelle, D.; Kley, E.-B.; Tünnermann, A.; Gerken, M.
2008. Optics Express, 16 (10), 7153–7160

A Numerical Scheme to Model Current and Voltage Excitation of Organic Light-Emitting Diodes.
Lemmer, U.; Pflumm, C.; Gärtner, C.
2008. IEEE Journal of Quantum Electronics, 44 (8), 790–798

Speckle characteristics of a broad-area VCSEL in the incoherent emission regime.
Lemmer, U.; Riechert, F.; Verschaffelt, G.; Peeters, M.; Bastian, G.; Fischer, I.
2008. Optics Communications, 281 (17), 4424–4431

Optical Data Link Employing Organic Light-Emitting Diodes and Organic Photodiodes as Optoelectronic Components.
Lemmer, U.; Punke, M.; Valouch, S.; Kettlitz, S. W.; Gerken, M.
2008. IEEE/OSA Journal of Lightwave Technology, 26 (7), 816–823

Hybrid organic-dielectric thin film stacks for nonlinear optical applications.
Lemmer, U.; Peters, S.; Glöckler, F.; Gerken, M.
2008. Thin Solid Films, 516 (14), 4519–4525

Ionic Liquid Based Approach to Luminescent LaPO4:Ce,Tb Nanocrystals: Synthesis, Characterization and Application.
Lemmer, U.; Trampert, K.; Heering, W.; Zharkouskaya, A.; Feldmann, C.
2008. European Journal of Inorganic Chemistry, (6), 873–877

Die dynamische Leuchtweitenregelung und ihre Relevanz für die Verkehrssicherheit.
Lemmer, U.; Jebas, C.; Klinger, K.
2008. VKU Verkehrsunfall und Fahrzeugtechnik, (4)

Low-speckle laser projection with a broad-area VCSEL in the incoherent emission regime.
Lemmer, U.; Riechert, F.; Verschaffelt, G.; Craggs, G.; Meuret, Y.; van Giel, B.; Thienpont, H.
2008. SID Symposium Digest of Technical Papers, 39 (1), 2098–2101

2007

Organic semiconductor lasers as integrated light sources for optical sensor systems.
Lemmer, U.; Woggon, T.; Gerken, M.; Wang, J.; Punke, M.; Stroisch, M.; Ebenhoch, B.; Geyer, U.; Karnutsch, C.; Bruendel, M.; Weimann, T.
2007. Proceedings / Organic-based chemical and biological sensors, 28 August 2007, San Diego, California, USA. Ed.: R. Shinar, 665909/1–11, SPIE, Bellingham (Wash.)

Speckle phenomena in pulsed broad-area vertical-cavity surface-emitting laser emission under different driving and illumination conditions.
Lemmer, U.; Riechert, F.; Peeters, M.; Fischer, I.; Verschaffelt, G.; Bastian, G.
2007. Proceedings of the 2007 European Conference on Lasers & Electro-Optics and the International Quantum Electronics Conference, CLEO/Europe-IQEC 2007, Munich, Germany, 17 - 22 June 2007, 1 S., IEEE Service Center, Piscataway (NJ)

All-organic waveguide coupled solid-state distributed feedback laser.
Lemmer, U.; Punke, M.; Woggon, T.; Stroisch, M.; Heinrich, M. P.; Karnutsch, C.; Mozer, S.; Bruendel, M.; Rabus, D. G.; Weimann, T.
2007. Proceedings of the 2007 European Conference on Lasers & Electro-Optics and the International Quantum Electronics Conference, CLEO/Europe-IQEC 2007, Munich, Germany, 17 - 22 June 2007, 1 S., IEEE Service Center, Piscataway (NJ)

Fabrication and characterization of organic solid-state lasers using imprint technologies.
Lemmer, U.; Woggon, T.; Pütz, A.; Gerken, M.; Wang, J.; Bruendel, M.; Rabus, D. G.; Weimann, T.; Punke, M.; Stroisch, M.; Heinrich, M. P.
2007. Proceedings of the 2007 digest of the LEOS summer topical meetings, Portland, OR, 23 - 25 July 2007, 103–104, IEEE, Piscataway (NJ)

Reducing the impact of charge carrier induced absorption in organic double heterostructure laser diodes.
Lemmer, U.; Gärtner, C.; Karnutsch, C.
2007. Proceedings of the 2007 European Conference on Lasers & Electro-Optics and the International Quantum Electronics Conference, CLEO/Europe-IQEC 2007, Munich, Germany, 17 - 22 June 2007, 1 S., IEEE Service Center, Piscataway (NJ)

Untersuchung des Einflusses der Vorfeld- und Seitenausleuchtung automobiler Scheinwerfer auf die Erkennbarkeitsentfernung von Sehobjekten.
Lemmer, U.; Jebas, C.; Klinger, K.
2007. Tagungsband / Lux Junior 2007: 8. Forum für den Lichttechnischen Nachwuchs, 21. bis 23. September 2007, Dörnfeld/Ilm; 1 CD-Rom, Techn. Univ., Ilmenau

Die dynamische Leuchtweitenregelung und ihre Relevanz für die Verkehrssicherheit.
Lemmer, U.; Jebas, C.; Klinger, K.
2007. Tagungsband / Lux Junior 2007: 8. Forum für den Lichttechnischen Nachwuchs, 21. bis 23. September 2007, Dörnfeld/Ilm; 1 CD-Rom, Techn. Univ., Ilmenau

Distribution and Emission Properties of Fluorescing Nanospheres on 2D Photonic Crystal Slabs.
Lemmer, U.; Gerken, M.; Nazirizadeh, Y.; Müller, J. G.; Bornemann, R.; Bastian, G.; Schelle, D.; Kley, E.-B.; Tünnermann, A.
2007. Proceedings of the 2007 European Conference on Lasers & Electro-Optics and the International Quantum Electronics Conference, CLEO/Europe-IQEC 2007, Munich, Germany, 17 - 22 June 2007, 1 S., IEEE Service Center, Piscataway (NJ)

Optical design of LED-based automotive tail lamps.
Lemmer, U.; Domhardt, A.; Rohlfing, U.; Klinger, K.; Manz, K.; Kooß, D.
2007. Proceedings / Nonimaging optics and efficient illumination systems IV, 26 - 27 August 2007, San Diego, California, USA. Ed.: R. Winston, 66700L/ 1–10, SPIE, Bellingham (Wash.)

Organic photo detectors for an integrated thin-film spectrometer.
Lemmer, U.; Peters, S.; Sui, Y.; Glöckler, F.; Gerken, M.
2007. Proceedings / Next-generation spectroscopic technologies, 10 - 11 September 2007, Boston, Massachusetts, USA. Ed.: C. D. Brown, 676503/1–10, SPIE, Bellingham (Wash.)

Loss processes in organic double-heterostructure laser diodes.
Lemmer, U.; Gärtner, C.; Karnutsch, C.; Brückner, J.; Christ, N.; Uebe, S.; Görrn, P.; Rabe, T.; Riedl, T.; Kowalsky, W.
2007. Proceedings / Organic light emitting materials and devices XI, 26 - 29 August 2007, San Diego, California, USA. Ed.: Z. H. Kafafi, 66550T/1–13, SPIE, Bellingham (Wash.)

Numerical simulation tool for synthetic speckle pattern images and their intensity-based integration under variable conditions for metrology applications.
Lemmer, U.; Riechert, F.; Bastian, G.
2007. Proceedings / Modeling aspects in optical metrology, 18 - 19 June 2007, Munich, Germany. Ed.: H. Bosse, SPIE, Bellingham (Wash.)

Tunable superprism effect in photonic crystals.
Lemmer, U.; Glöckler, F.; Peters, S.; Gerken, M.
2007. Physica Status Solidi (A), 204 (11), 3790–3804

Continuous-wave two-photon spectroscopy on a ladder-type conjugated polymer.
Lemmer, U.; Hildner, R.; Scherf, U.; Köhler, J.
2007. Chemical Physics Letters, 448 (4-6), 213–217

Optimized Design of Plasmonic MSM Photodetector.
Lemmer, U.; Hetterich, J.; Bastian, G.; Gippius, N. A.; Tikhodeev, S. G.; von Plessen, G.
2007. IEEE Journal of Quantum Electronics, 43 (10), 855–859

Dynamic characterization of organic bulk heterojunction photodetectors.
Lemmer, U.; Punke, M.; Valouch, S.; Kettlitz, S. W.; Christ, N.; Gärtner, C.; Gerken, M.
2007. Applied Physics Letters, 91 (7), 071118/1–3

Organic semiconductor distributed feedback laser fabricated by direct laser interference ablation.
Lemmer, U.; Stroisch, M.; Woggon, T.; Bastian, G.; Violakis, G.; Pissadakis, S.
2007. Optics Express, 15 (7), 3968–3973

Laser Diode-Pumped Organic Semiconductor Lasers Utilizing Two-Dimensional Photonic Crystal Resonators.
Lemmer, U.; Karnutsch, C.; Stroisch, M.; Punke, M.; Wang, J.; Weimann, T.
2007. IEEE Photonics Technology Letters, 19 (10), 741–743

Improved organic semiconductor lasers based on a mixed-order distributed feedback resonator design.
Lemmer, U.; Gärtner, C.; Karnutsch, C.; Pflumm, C.
2007. Applied Physics Letters, 90 (13), 131104/1–3

The influence of annihilation processes on the threshold current density of organic laser diodes.
Lemmer, U.; Gärtner, C.; Karnutsch, C.; Pflumm, C.
2007. Journal of Applied Physics, 101 (2), 023107/1–9

Coupling of Organic Semiconductor Amplified Spontaneous Emission Into Polymeric Single-Mode Waveguides Patterned by Deep-UV Irradiation.
Punke, M.; Mozer, S.; Stroisch, M.; Heinrich, M. P.; Lemmer, U.; Henzi, P.; Rabus, D. G.
2007. IEEE photonics technology letters, 19 (2), 61–63. doi:10.1109/LPT.2006.889026

2006

Picosecond excitation energy relaxation processes in a ladder-type π-conjugated polymer.
Hildner, R.; Lemmer, U.; Scherf, U.; Köhler, J.
2006. Chemical physics letters, 429 (1-3), 103–108. doi:10.1016/j.cplett.2006.08.001

Low threshold blue conjugated polymer DFB lasers.
Lemmer, U.; Karnutsch, C.; Haug, V.; Gärtner, C.
2006. Technical digest CD-ROM / Conference on Lasers and Electro-Optics, Quantum Electronics and Laser Science Conference, Conference on Photonic Applications, Systems and Technologies, Long Beach Convention Center, Long Beach, California, USA, CLEO/QELS Conference, May 21 - 26, 2006, PhAST Conference, May 22 - 25, 2006, 1–2, OSA, Washington (DC)

Spontaneous Emission Properties of Single Emitters in Planar Photonic Crystals.
Lemmer, U.; Gerken, M.; Müller, J. G.; Bornemann, R.; Bastian, G.; Schelle, D.; Augustin, M.; Kley, E.-B.; Tünnermann, A.
2006. Proceedings of 2006 8th International Conference on Transparent Optical Networks, Nottingham, United Kingdom, June 18 - 22, 2006. Ed.: M. Marciniak, 36–39, IEEE Operations Center, Piscataway (NJ)

Influence of electronic properties on the threshold behaviour of organic laser diode structures.
Lemmer, U.; Pflumm, C.; Gärtner, C.; Karnutsch, C.
2006. Proceedings / Organic light-emitting materials and devices X, 13 - 16 August 2006, San Diego, California, USA. Ed.: Z. H. Kafafi, 63330W/1–9, SPIE, Bellingham (Wash.)

Optimization of electron transport and cathode materials for efficient organic solar cells.
Lemmer, U.; Colsmann, A.; Junge, J.; Wellinger, T.; Kayser, C.
2006. Proceedings / Organic optoelectronics and photonics II, 3 - 6 April 2006, Strasbourg, France. Ed.: P. L. Heremans, 619220/1–5, SPIE, Bellingham (Wash.)

Organic semiconductor devices for micro-optical applications.
Lemmer, U.; Punke, M.; Mozer, S.; Stroisch, M.; Gerken, M.; Bastian, G.; Rabus, D. G.; Henzi, P.
2006. Proceedings / Micro-optics, VCSELs, and photonic interconnects II: fabrication, packaging, and integration, 3 - 5 April 2006, Strasbourg, France. Ed.: H. Thienpont, 618505/1–13, SPIE, Bellingham (Wash.)

New technologies for night vision.
Lemmer, U.; Schellinger, S.; Klinger, K.; Kooß, D.; Manz, K.
2006. Proceedings / Photonics in the automobile II, 6 April 2006, Strasbourg, France, Photonics Europe. Ed.: P. P. Meyrueis, 61980G/1–7, SPIE, Bellingham (Wash.)

Advantages of ambient interior lighting for drivers contrast vision.
Lemmer, U.; Schellinger, S.; Franzke, D.; Klinger, K.
2006. Proceedings / Photonics in the automobile II, 6 April 2006, Strasbourg, France, Photonics Europe. Ed.: P. P. Meyrueis, 61980J/1–6, SPIE, Bellingham (Wash.)

Organic light-emitting diodes and organic photodetectors as optoelectronic devices for an optical interconnect.
Lemmer, U.; Valouch, S.; Gerken, M.; Punke, M.; Mozer, S.
2006. Tagungsband zum 9. Workshop Optik in der Rechentechnik, 27.10.2006, Siegen, 2006. Hrsg.: E. Griese, Siegen

Design of all-optical spatial beam switches using the superprism effect in one-dimensional photonic nanostructures.
Lemmer, U.; Glöckler, F.; Peters, S.; Gerken, M.
2006. Vortrag auf der AMOP-Frühjahrstagung der Fachverbände Atomphysik, Massenspektrometrie, Molekülphysik, Quantenoptik und Photonik, 13. - 17. März 2006, Johann Wolfgang Goethe Universität Frankfurt am Main, Physikverl., Weinheim

Influence of electronic properties on the threshold behaviour of organic laser diode structures.
Lemmer, U.; Karnutsch, C.; Gärtner, C.; Pflumm, C.
2006. Proceedings / Organic light-emitting materials and devices X, 13 - 16 August 2006, San Diego, California, USA. Ed.: Z. H. Kafafi, 33, SPIE, Bellingham (Wash.)

Numerical study of annihilation processes in electrically pumped organic semiconductor laser diodes.
Lemmer, U.; Gärtner, C.; Pflumm, C.; Karnutsch, C.; Haug, V.
2006. Proceedings / Organic light-emitting materials and devices X : 13 - 16 August 2006, San Diego, California, USA. Ed.: Z. H. Kafafi, 63331J/1–12, SPIE, Bellingham (Wash.)

Picosecond excitation energy relaxation processes in a ladder-type [pi]-conjugated polymer.
Lemmer, U.; Hildner, R.; Scherf, U.; Köhler, J.
2006. Chemical Physics Letters, 429 (1-3), 103–108

Low threshold blue conjugated polymer lasers with first- and second-order distributed feedback.
Lemmer, U.; Karnutsch, C.; Gärtner, C.; Haug, V.
2006. Applied Physics Letters, 89 (20), 201108/1–3

Organic tandem solar cells comprising polymer and small-molecule subcells.
Lemmer, U.; Colsmann, A.; Junge, J.; Kayser, C.
2006. Applied Physics Letters, 89 (20), 203506/1–3

Continuous-wave solid-state dye laser.
Lemmer, U.; Bornemann, R.; Thiel, E.
2006. Optics Letters, 31 (11), 1669–1671

High-repetition-rate white-light pump-probe spectroscopy with a tapered fiber.
Lemmer, U.; Punke, M.; Hoos, F.; Karnutsch, C.; Linder, N.; Streubel, K.
2006. Optics Letters, 31 (8), 1157–1159

Lasing action in two-dimensional organic photonic crystal lasers with hexagonal symmetry.
Lemmer, U.; Forberich, K.; Diem, M.; Crewett, J.; Gombert, A.; Busch, K.
2006. Applied Physics B: Lasers and Optics, 82 (4), 539–541

Visualization of astaxanthin localization in HT29 human colon adenocarcinoma cells by combined confocal resonance Raman and fluorescence microspectroscopy.
Lemmer, U.; Briviba, K.; Bornemann, R.
2006. Molecular nutrition & food research, 50 (11), 991–995

Lasing mechanisms in organic photonic crystal lasers with two-dimensional distributed feedback.
Lemmer, U.; Forberich, K.; Gombert, A.; Pereira, S.; Crewett, J.; Diem, M.; Busch, K.
2006. Journal of Applied Physics, 100 (2), 023110/1–6

CW-Polymerlaser - Dauerstrich-Laserlicht aus Speziallack.
Lemmer, U.; Bornemann, R.; Thiel, E.
2006. Photonik - Fachzeitschrift für die optischen Technologien, (5), 66–69

Design of a 1:N switch using nonlinear optical materials in one-dimensional photonic nanostructures.
Lemmer, U.; Glöckler, F.; Peters, S.; Gerken, M.
2006. Proceedings / Nanophotonics for communication: materials and devices III, 2 - 3 October 2006, Boston, Massachusetts, USA. Ed.: M. Gerken, 63930K/1–8, SPIE, Bellingham (Wash.)

2005

Spatial beam switching using the superprism effect in nonlinear thin-film stacks.
Lemmer, U.; Gerken, M.; Glöckler, F.
2005. Proceedings / Advances in optical thin films II, 13 - 15 September 2005, Jena, Germany. Ed.: C. Amra, 59632B/1–7, SPIE, Bellingham (Wash.)

Modelling of the laser dynamics of electrically pumped organic semiconductor laser diodes.
Lemmer, U.; Karnutsch, C.; Boschert, R.; Gerken, M.; deMello, J. C.; Bradley, D. D. C.; Pflumm, C.
2005. Proceedings / Organic light-emitting materials and devices IX, 31 July - 3 August, San Diego, California, USA, proceedings of the Tenth [i.e. Ninth] Conference on Organic Light-Emitting Materials and Devices. Ed.: Z. H. Kafafi, 59370X/1–13, SPIE, Bellingham (Wash.)

NCAP-Lighting - A New Approach to Rate Illumination of Cars.
Lemmer, U.; Klinger, K.; Kooß, D.; Manz, K.; Schellinger, S.
2005. Proceedings of the 6th International Symposium on Automotive Lighting, ISAL 2005, September 27 - 28, 2005. Ed.: H. F. Schlaak, 831–839, Utz, München

Reaction Time Increase due to the Overlap of Brake Light and Turn Signals.
Lemmer, U.; Klinger, K.; Tabisova, S.; Kooß, D.; Manz, K.
2005. Proceedings of the 6th International Symposium on Automotive Lighting, ISAL 2005, September 27 - 28, 2005. Ed.: H. F. Schlaak, 535–543, Utz, München

Lasertätigkeit in 1- und 2-dimensionalen photonischen Kristallen.
Lemmer, U.; Gerken, M.; Stroisch, M.; Forberich, K.; Gombert, A.; Fetten, M.; Salbeck, J.
2005. Vortrag / 69. Jahrestagung der Deutschen Physikalischen Gesellschaft (DPG) e. V., gemeinsame Tagung aller Fachverbände und Arbeitskreise der DPG mit der Astronomischen Gesellschaft, Berlin, 4. - 9. März 2005, Physik-Verlag, Weinheim

Dispersive photonic nanostructures for integrated sensors.
Lemmer, U.; Gerken, M.
2005. Proceedings / Nanosensing: materials and devices II, 23 - 26 October 2005, Boston, Massachusetts, USA, proceedings of the Second Conference on Nanosensing: Materials and Devices. Ed.: M. S. Islam, 60080W/1–8, SPIE, Bellingham (Wash.)

Organic semiconductor distributed feedback lasers.
Lemmer, U.; Karnutsch, C.; Gerken, M.
2005. Proceedings / Nanosensing: materials and devices II, 23 - 26 October 2005, Boston, Massachusetts, USA, proceedings of the Second Conference on Nanosensing: Materials and Devices. Ed.: M. S. Islam, 60080Z/1–15, SPIE, Bellingham (Wash.)

Amplified spontaneous emission in an organic semiconductor multilayer waveguide structure including a highly conductive transparent electrode.
Lemmer, U.; Gerken, M.; Reufer, M.; Feldmann, J.; Rudati, P.; Ruhl, A.; Muller, D.; Meerholz, K.; Karnutsch, C.
2005. Applied Physics Letters, 86 (22), 221102/1–3

Parametric study of modal gain and threshold power density in electrically pumped single-layer organic optical amplifier and laser diode structures.
Lemmer, U.; Pflumm, C.; Karnutsch, C.; Gerken, M.
2005. IEEE Journal of Quantum Electronics, 41 (3), 316–336

Ultrafast dynamics of charge carrier photogeneration and geminate recombination in conjugated polymer:fullerene solar cells.
Lemmer, U.; Müller, J. G.; Lupton, J. M.; Feldmann, J.; Scharber, M. C.; Sariciftci, N. S.; Brabec, C. J.; Scherf, U.
2005. Physical Review B, 72 (19), 195208/1–10

Bestimmung der Polymerverteilung in textilbewehrtem Beton mittels konfokaler Raman-Mikroskopie.
Lemmer, U.; Bornemann, R.; Walk-Lauffer, B.; Raupach, M.
2005. Photonik - Fachzeitschrift für die optischen Technologien, (4), 60–63

2004

dCAM: direct Confocal Absorption Microscopy - A new three-dimensional imaging microscopy process without fluorescent dyes.
Lemmer, U.; Bornemann, R.; Thiel, E.
2004. Proceedings of the Nanofair 2004 - new ideas for industry: international symposium Karlsruhe, 23rd and 24th November, 2004, VDI-Verl., Düsseldorf

Lasertätigkeit in ein- und zweidimensionalen photonischen Kristallen.
Lemmer, U.; Forberich, K.; Gombert, A.; Stroisch, M.; Pereira, S.; Busch, K.
2004. Vortrag / Frühjahrstagung des Arbeitskreises Festkörperphysik bei der DPG, Regensburg 08. - 12. März 2004, gemeinsame Tagung mit der Österreichischen Physikalischen Gesellschaft, der Nederlandse Natuurkundige Vereniging und der Union of Czech Mathematicians and Physicists und dem Fachbereich Physik der Universität Regensburg, Physik-Verl., Weinheim

Gain and Polaron Absorption in Electrically Pumped Single-Layer Organic Laser Diodes.
Lemmer, U.; Karnutsch, C.; Gerken, M.; Pflumm, C.
2004. Proceeding of the 34th European Solid-State Device Research Conference, Leuven, Belgium, 21 - 23 September 2004. Ed.: R. P. Mertens, 421–424, IEEE Operations Center, Piscataway (NJ)

Numerical simulation of modal gain in electrically pumped organic semiconductor lasers.
Lemmer, U.; Karnutsch, C.; Gerken, M.; Pflumm, C.
2004. Procedings / Organic light-emitting materials and devices VIII, 2 - 4 August 2004, Denver, Colorado, USA; proceedings of the Eighth Conference on Organic Light-Emitting Materials and Devices. Ed.: Z. H. Kafafi, 279–286, SPIE, Bellingham (Wash.)

Low-threshold polymeric distributed feedback lasers with metallic contacts.
Lemmer, U.
2004. Applied Physics Letters, 84 (17), 3262–3264

Ultrafast intramolecular energy transfer in single conjugated polymer chains probed by polarized single chromophore spectroscopy.
Lemmer, U.; Müller, J. G.; Lupton, J. M.; Feldmann, J.; Scherf, U.
2004. Applied Physics Letters, 84 (7), 1183–1185

2003

One- and two-photon photocurrents from tunable organic microcavity photodiodes.
Lemmer, U.; Koeppe, R.; Müller, J. G.; Lupton, J. M.; Feldmann, J.; Scherf, U.
2003. Applied Physics Letters, 82 (16), 2601–2603

Organic Microcavity Photodiodes.
Lemmer, U.; Lupton, J. M.; Koeppe, R.; Müller, J. G.; Feldmann, J.; Scherf, U.
2003. Advanced Materials, 15 (17), 1471–1474

Ultrafast spectroscopy of polaron pairs in polymer solar cells.
Lemmer, U.; Müller, J. G.; Scharber, M.; Feldmann, J.; Scherf, U.; Sariciftci, N. S.
2003. Synthetic Metals, 137 (1-3), 1475–1476

Linewidth-Limited Energy Transfer in Single Conjugated Polymer Molecules.
Lemmer, U.; Müller, J. G.; Raschke, G.; Anni, M.; Scherf, U.; Lupton, J. M.; Feldmann, J.
2003. Physical Review Letters, 91 (26), 267403/1–4

A Low Threshold Polymer Laser Based on Metallic Nanoparticle Gratings.
Lemmer, U.
2003. Advanced Materials, 15 (20), 1726–1729

2002

Picosecond amplified spontaneous emission bursts from a molecularly doped organic semiconductor.
Lemmer, U.; Kallinger, C.; Riechel, S.; Holderer, O.; Feldmann, J.; Berleb, S.; Muckl, A. G.; Brutting, W.
2002. Journal of Applied Physics, 91 (10), 6367–6370

Precursor States for Charge Carrier Generation in Conjugated Polymers Probed by Ultrafast Spectroscopy.
Lemmer, U.; Müller, J. G.; Feldmann, J.; Scherf, U.
2002. Physical Review Letters, 88 (14), 147401/1–4

Exciton dissociation dynamics in a conjugated polymer containing aggregate states.
Lemmer, U.; Haugeneder, A.; Scherf, U.
2002. Chemical Physics Letters, 351 (5-6), 354–358

Lateral Patterning of CdTe Nanocrystal Films by the Electric Field Directed Layer-by-Layer Assembly Method.
Lemmer, U.; Gao, M.; Sun, J.; Dulkeith, E.; Gaponik, N.; Feldmann, J.
2002. Langmuir, 18 (10), 4098–4102

Interaction of intermediate excited states and formation of free charge carriers under laser excitation of a conjugated polymer.
Frankevich, E.; Mueller, J. G.; Lemmer, U.
2002. Chemical physics, 285 (1), 13–29

Formation dynamics of layer-by-layer self-assembled films probed by second harmonic generation.
Breit, M.; Gao, M.; Von Plessen, G.; Lemmer, U.; Feldmann, J.; Cundiff, S. T.
2002. Journal of chemical physics, 117 (8), 3956–3960

Prof. Dr. rer. nat. Uli Lemmer

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