Sustainable Engineering

Demonstration of the production maturity of perovskite silicon tandem solar cells (ProTandem)

Project description

Tandem solar cells made of silicon and inorganic-organic perovskites are considered a milestone in the development of highly efficient solar modules. By combining the different semiconductor materials, it is also possible to use the visible wavelength ranges of the solar spectrum that simple silicon solar cells have so far only inefficiently converted into electricity. This enables better utilization of sunlight, which means that efficiencies significantly exceeding those of conventional photovoltaic modules can be achieved.

The ProTandem consortium funded by the German Federal Ministry for Economic Affairs and Energy (BMWi) brings together experts from science and business in order to prepare for the industrial large-scale production of perovskite tandem solar cells. An important step is the optimization of the solar cell architecture in order to increase efficiency in industrial wafer formats of 156 x 156 mm. The focus is also on the establishment of industrial process technology and a life cycle analysis in order to assess the possible environmental effects and socio-economic risks of the perovskite-silicon tandem technology. Project coordination, as well as risk analysis and IP management, are handled by Oxford PV Germany GmbH, which operates a pilot line for the production of tandem solar cells in Brandenburg / Havel. Other partners in the consortium are the Helmholtz Center Berlin (HZB), the Fraunhofer Institute for Solar Energy Systems (ISE) and Von Ardenne GmbH, which primarily focus on the issues of production maturity and technological competitiveness. The Chair of Sustainable Engineering (SEE) at TU Berlin manages the sub-project “Ökobilanz und Screening socioökonomischer Risiken” (Ecobalance and screening of socio-economic risks) to examine the potential socio-ecological effects of perovskite-silicon tandem technology.

Client: Federal Ministry for Economic Affairs and Energy (BMWi)

Duration 07/2018 – 06/2021

Project partners:

  • Oxford PV Germany GmbH (project management)
  • Helmholtz Center Berlin (HZB)
  • Fraunhofer Institute for Solar Energy Systems ISE
  • Von Ardenne GmbH

Topics: Life cycle assessment, renewable energies, perovskite tandem solar cells

Prof. Dr. Matthias FINKBEINER
Phone +49(0)30.314-24341

Dr. Martin ROFFEIS
Phone +49 (0) 30.314-24340