LTI

Dr. Guillaume Gomard

  • Gruppenleiter „Nanophotonics“
  • Engesserstrasse 13, Geb. 30.34
    76131 Karlsruhe

Publikationen


2021
Simulation of light scattering in large, disordered nanostructures using a periodic T-matrix method.
Theobald, D.; Beutel, D.; Borgmann, L.; Mescher, H.; Gomard, G.; Rockstuhl, C.; Lemmer, U.
2021. Journal of quantitative spectroscopy & radiative transfer, 272, Article no: 107802. doi:10.1016/j.jqsrt.2021.107802
Gold nanoplasmonic particles in tunable porous silicon 3D scaffolds for ultra-low concentration detection by SERS.
Wu, R.; Jin, Q.; Storey, C. J.; Collins, J.; Gomard, G.; Lemmer, U.; Canham, L. T.; Kling, R.; Kaplan, A.
2021. Nanoscale horizons. doi:10.1039/D1NH00228G
Phase-Separated Nanophotonic Structures by Inkjet Printing.
Donie, Y. J.; Schlisske, S.; Siddique, R. H.; Mertens, A.; Narasimhan, V.; Schackmar, F.; Pietsch, M.; Hossain, I. M.; Hernandez-Sosa, G.; Lemmer, U.; Gomard, G.
2021. ACS nano, acsnano.1c00552. doi:10.1021/acsnano.1c00552
Snake‐Inspired, Nano‐Stepped Surface with Tunable Frictional Anisotropy Made from a Shape‐Memory Polymer for Unidirectional Transport of Microparticles.
Wu, W.; Guttmann, M.; Schneider, M.; Thelen, R.; Worgull, M.; Gomard, G.; Hölscher, H.
2021. Advanced functional materials, 31 (19), Art.-Nr.: 2009611. doi:10.1002/adfm.202009611
2020
Planarized and Compact Light Scattering Layers Based on Disordered Titania Nanopillars for Light Extraction in Organic Light Emitting Diodes.
Donie, Y. J.; Theobald, D.; Moghadamzadeh, S.; Mertens, A.; Hossain, I. M.; Paetzold, U. W.; Lemmer, U.; Gomard, G.
2020. Advanced optical materials, 9 (14), Art.-Nr.: 2001610. doi:10.1002/adom.202001610
Hot-embossed microcone-textured fluoropolymer as self-cleaning and anti-reflective photovoltaic module covers.
Roslizar, A.; Dottermusch, S.; Schmager, R.; Guttmann, M.; Gomard, G.; Hölscher, H.; Richards, B. S.; Paetzold, U. W.
2020. Solar energy materials & solar cells, 214, 110582. doi:10.1016/j.solmat.2020.110582
Hot-embossed large-area plant microstructures for improved photovoltaic light harvesting”.
Fritz, B.; Guttmann, M.; Gomard, G.; Hünig, R.
2020. WOMag, 9 (5), 20–21
Nanostructured front electrodes for perovskite/c-Si tandem photovoltaics.
Hossain, I. M.; Donie, Y. J.; Schmager, R.; Abdelkhalik, M. S.; Rienäcker, M.; Wietler, T. F.; Peibst, R.; Karabanov, A.; Schwenzer, J. A.; Moghadamzadeh, S.; Lemmer, U.; Richards, B. S.; Gomard, G.; Paetzold, U. W.
2020. Optics express, 28 (6), 8878–8897. doi:10.1364/OE.382253
Compensated Microsphere-Assisted Interference Microscopy.
Perrin, S.; Donie, Y. J.; Montgomery, P.; Gomard, G.; Lecler, S.
2020. Physical review applied, 13 (1), Art.-Nr. 014068. doi:10.1103/PhysRevApplied.13.014068
Bioreplicated coatings for photovoltaic solar panels nearly eliminate light pollution that harms polarotactic insects.
Fritz, B.; Horváth, G.; Hünig, R.; Pereszlényi, Á.; Egri, Á.; Guttmann, M.; Schneider, M.; Lemmer, U.; Kriska, G.; Gomard, G.
2020. (O. Ostroverkhova, Hrsg.)PLOS ONE, 15 (12), Art.-Nr. e0243296. doi:10.1371/journal.pone.0243296
Variation of the frictional anisotropy on ventral scales of snakes caused by nanoscale steps.
Wu, W.; Yu, S.; Schreiber, P.; Dollmann, A.; Lutz, C.; Gomard, G.; Greiner, C.; Hölscher, H.
2020. Bioinspiration & biomimetics, 15 (5), Art.-Nr.: 056014. doi:10.1088/1748-3190/ab9e51
Horsefly reactions to black surfaces: attractiveness to male and female tabanids versus surface tilt angle and temperature.
Horváth, G.; Pereszlényi, Á.; Egri, Á.; Fritz, B.; Guttmann, M.; Lemmer, U.; Gomard, G.; Kriska, G.
2020. Parasitology research, 119, 2399–2409. doi:10.1007/s00436-020-06702-7
Upscaling the fabrication routine of bioreplicated rose petal light harvesting layers for photovoltaic modules.
Fritz, B.; Hünig, R.; Guttmann, M.; Schneider, M.; Reza, K. M. S.; Salomon, O.; Jackson, P.; Powalla, M.; Lemmer, U.; Gomard, G.
2020. Solar energy, 201, 666–673. doi:10.1016/j.solener.2020.03.020
A Single‐Step Hot Embossing Process for Integration of Microlens Arrays in Biodegradable Substrates for Improved Light Extraction of Light‐Emitting Devices.
Jürgensen, N.; Fritz, B.; Mertens, A.; Tisserant, J.; Kolle, M.; Gomard, G.; Hernandez‐Sosa, G.
2020. Advanced materials technologies, 1900933. doi:10.1002/admt.201900933
Highly Efficient and Water-Stable Lead Halide Perovskite Quantum Dots Using Superhydrophobic Aerogel Inorganic Matrix for White Light-Emitting Diodes.
Li, Z.; Song, C.; Li, J.; Liang, G.; Rao, L.; Yu, S.; Ding, X.; Tang, Y.; Yu, B.; Ou, J.; Lemmer, U.; Gomard, G.
2020. Advanced materials technologies, 5 (2), Article: 1900941. doi:10.1002/admt.201900941
2019
Enhanced color conversion of quantum dots - polymer hybrid films in light emitting diodes.
Yu, S.; Fritz, B.; Theobald, D.; Wu, K.; Johnsen, S.; Busko, D.; Richards, B. S.; Wiegand, G.; Tang, Y.; Li, Z.; Lemmer, U.; Holscher, H.; Gomard, G.
2019. 20th International Conference on Electronic Packaging Technology (ICEPT 2019), 1–4, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/ICEPT47577.2019.245231
Photon recycling in nanopatterned perovskite thin-films for photovoltaic applications.
Nanz, S.; Schmager, R.; Abebe, M. G.; Willig, C.; Wickberg, A.; Abass, A.; Gomard, G.; Wegener, M.; Paetzold, U. W.; Rockstuhl, C.
2019. APL photonics, 4 (7), Art.Nr.: 076104. doi:10.1063/1.5094579
Nanophotonic perovskite layers for enhanced current generation and mitigation of lead in perovskite solar cells.
Schmager, R.; Gomard, G.; Richards, B. S.; Paetzold, U. W.
2019. Solar energy materials & solar cells, 192, 65–71. doi:10.1016/j.solmat.2018.12.012
Foamed polymer/quantum dots composite films with enhanced photoluminescence efficiency.
Yu, S.; Fritz, B.; Theobald, D.; Johnsen, S.; Busko, D.; Richards, B. S.; Hippler, M.; Wiegand, G.; Tang, Y.; Li, Z.; Lemmer, U.; Hölscher, H.; Gomard, G.
2019. Optical Devices and Materials for Solar Energy and Solid-State Lighting : part of OSA Advanced Photonics Congress, Burlingame, CA, July 29 - August 2, 2019. Part F136-PVLED 2019, The Optical Society of America (OSA). doi:10.1364/PVLED.2019.PT2C.4
Light coupling to quasi-guided modes in nanoimprinted perovskite solar cells.
Schmager, R.; Hossain, I. M.; Schackmar, F. R.; Richards, B. S.; Gomard, G.; Paetzold, U. W.
2019. Solar energy materials & solar cells, 201, Art.-Nr.: 110080. doi:10.1016/j.solmat.2019.110080
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
Nano-scale surface steps as the origin of friction anisotropy of snake scales.
Wu, W.; Yu, S.; Greiner, C.; Gomard, G.; Hölscher, H.
2019. DPG-Frühjahrstagung der Sektion Kondensierte Materie (SKM), Fachverband Oberflächenphysik (2019), Regensburg, Deutschland, 31. März–5. April 2019
2018
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, Society of Photo-optical Instrumentation Engineers (SPIE). doi:10.1117/12.2320555
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, Society of Photo-optical Instrumentation Engineers (SPIE). doi:10.1117/12.2319151
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. doi:10.1117/12.2305921
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
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
Rigorous Wave-Optical Simulation of Photon Recycling in Nanostructured Perovskite Solar Cells.
Nanz, S.; Schmager, R.; Abass, A.; Abebe, M. G.; Gomard, G.; Paetzold, U. W.; Rockstuhl, C.
2018. Optics in Solar Energy (SOLAR) - OSA Light, Energy and the Environment Congress, Singapore, 5 – 8 November 2018, OT5C.2, The Optical Society of America (OSA). doi:10.1364/OSE.2018.OT5C.2
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
Characterization of the microscopic tribological properties of sandfish (Scincus scincus) scales by atomic force microscopy.
Wu, W.; Lutz, C.; Mersch, S.; Thelen, R.; Greiner, C.; Gomard, G.; Hölscher, H.
2018. Beilstein journal of nanotechnology, 9, 2618–2627. doi:10.3762/bjnano.9.243
Patterned photovoltaic absorbers harvest sunlight better.
Gomard, G.
2018. Photonics spectra, 52 (7), 58–62
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
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
2017
Self-Cleaning Microcavity Array for Photovoltaic Modules.
Vüllers, F.; Fritz, B.; Roslizar, A.; Striegel, A.; Guttmann, M.; Richards, B. S.; Hölscher, H.; Gomard, G.; Klampaftis, E.; Kavalenka, M. N.
2017. ACS applied materials & interfaces, 10 (3), 2929–2936. doi:10.1021/acsami.7b15579
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, Karlsruher Institut für Technologie (KIT)
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, The Optical Society of America (OSA). doi:10.1364/SSL.2017.SW2C.4
Thermodynamics of photon recycling in four terminal perovskite/Si tandem solar cells.
Abebe, M. G.; Gomard, G.; Zschiedrich, L.; Rockstuhl, C.; Paetzold, U. W.; Abass, A.
2017. Optical Nanostructures and Advanced Materials for Photovoltaics, Boulder, United States, 6th - 9th November 2017, The Optical Society of America (OSA). doi:10.1364/PV.2017.PM4A.2
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
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
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
Bio-inspired, large scale, highly-scattering films for nanoparticle-alternative white surfaces.
Syurik, J.; Siddique, R. H.; Dollmann, A.; Gomard, G.; Schneider, M.; Worgull, M.; Wiegand, G.; Hölscher, H.
2017. Scientific reports, 7, Art. Nr.: 46637. doi:10.1038/srep46637
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
Infiltrated photonic crystals for light-trapping in CuInSe₂ nanocrystal-based solar cells.
Dottermusch, S.; Quintilla, A.; Gomard, G.; Roslizar, A.; Voggu, V. R.; Simonsen, B. A.; Park, J. S.; Pernik, D. R.; Korgel, B. A.; Paetzold, U. W.; Richards, B. S.
2017. Optics express, 25 (12), A502-A514. doi:10.1364/OE.25.00A502
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
2016
Simulation of Absorption Enhancement and Optical Modes in CIS Nanocrystal Embedded Photonic Crystal Designs.
Dottermusch, S.; Quintilla, A.; Gomard, G.; Paetzold, U. W.; Richards, B. S.
2016. Light, Energy and the Environment Congress, November 14-17, 2016, Leipzig, Germany, PTu2B.3, The Optical Society of America (OSA). doi:10.1364/PV.2016.PTu2B.3
Direct Laser Written Nanophotonics for Embedded CIS Nanocrystal Solar Cells.
Dottermusch, S.; Quintilla, A.; Gomard, G.; Pernik, D.; Reddy, V.; Korgel, B.; Paetzold, U. W.; Richards, B. S.
2016. Light, Energy and the Environment Congress, November 14-17, 2016, Leipzig, Germany, PW3B.2, The Optical Society of America (OSA). doi:10.1364/PV.2016.PW3B.2
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, The Optical Society of America (OSA). 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, The Optical Society of America (OSA). doi:10.1364/SSL.2016.SSW2D.3
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
Bioinspired Superhydrophobic Highly Transmissive Films for Optical Applications.
Vüllers, F.; Gomard, G.; Preinfalk, J. B.; Klampaftis, E.; Worgull, M.; Richards, B.; Hölscher, H.; Kavalenka, M. N.
2016. Small. doi:10.1002/smll.201601443
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
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
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, Society of Photo-optical Instrumentation Engineers (SPIE). doi:10.1117/12.2227327
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. Photonics Europe, Bruxelles, B, April 3-7, 2016
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
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
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
The role of random nanostructures for the omnidirectional anti-reflection properties of the glasswing butterfly.
Siddique, R. H.; Gomard, G.; Hölscher, H.
2015. Nature Communications, 6, 6909/1–8. doi:10.1038/ncomms7909
2014
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