Perovskite Solar Cells - Versatile in Shape and Color
German and Greek researchers and industrial partners are developing printed perovskite solar modules for flexible use in buildings. The Printpero project, coordinated by the Karlsruhe Institute of Technology (KIT), aims to develop digitally printed solar modules that can be integrated into roofs, facades and windows.
Perovskite semiconductors are currently among the most promising materials for the next generation of highly efficient and cost-effective solar modules. Thin-film solar cells based on these perovskites already achieve efficiencies of more than 23 % in the laboratory. However, the processes currently used in research to manufacture perovskite solar cells cannot be transferred to industrial standards. "One goal of our project is therefore to replace laboratory processes with digital printing processes that run at low temperatures and are suitable for industrial production," explains Dr. Ulrich W. Paetzold. He is head of the research group "Advanced Optics and Materials for Next Generation Photovoltaics" at KIT’s Institute for Microstructure Technology (IMT) and KIT’s Light Technology Institute (LTI) and coordinator of Printpero (short for Printed Perovskite Modules for Building Integrated Photovoltaics).
In the Printpero project, researchers and industrial partners from Germany and Greece are cooperating to develop digitally printed solar modules that are stable and meet a wide range of architectural requirements for integration in buildings. They work on prototypes which can be designed in different shapes and colors. To achieve these goals, the participating researchers use the potential of digital inkjet printing. In addition, they develop printable luminescent layers to realize different color impressions and protect solar cells from harmful UV radiation.