Karlsruhe Institute of Technology
An innovative combination of processes enables the interconnection of cells to form modules with nearly no losses. (Photo: Amadeus Bramsiepe, KIT)
From cell to module without loss of efficiency: This is one of the main challenges of perovskite photovoltaics. Researchers at Karlsruhe Institute of Technology (KIT) have now managed to produce perovskite solar modules with minimum scaling loss. For this purpose, they combined laser-based series interconnections with vacuum processing of all layers of the solar cell. They achieved an 18 percent efficiency on an area of four square centimeters – a world record for vacuum-processed perovskite solar modules.