Evaluation of Innovative Photovoltaic Materials and Processes for Lighthouse Power Conversion Efficiencies (27Plus6).

  • Contact:

    Ulrich W. Paetzold

  • Funding:

    Federal Ministry for Economic Affairs and Energy (BMWi)

  • Partner:

    Institute for Solar Energy Research in Hamelin (ISFH)

  • Startdate:


  • Enddate:


The project "27plus6" has the ambitious technological goal to demonstrate world-class lighthouse power conversion efficiencies for crystalline Si (c-Si) solar cells and for c-Si / perovskite tandem solar cells. A unique technological feature of this project is the development of Si/perovskite tandem solar cells in the so-called 3-terminal architecture, which combines the advantages of the established 2-terminal and 4-terminal tandem solar cell architectures. Furthermore, the project will help the industrial partners to evaluate, develop, simplify and promote innovative individual processes and new materials in the context of cross-processing, and to promote them on the basis of the lighthouse devices.