New materials could help improve the performance of perovskite solar cells

New research could lead to the design of new materials to help improve the performance of perovskite solar cells (PSCs). Perovskite solar cells are an emerging photovoltaic technology that has seen a remarkable rise in power conversion ef?ciency to above 20 per cent. However, PSC performance is affected as the perovskite material contains ion defects that can move around over the course of a working day. As these defects move, they affect the internal electric environment within the cell. The Perovskite material is responsible for absorbing light to create electronic charge, and also for helping to extract the charge into an external circuit before it is lost to a process called 'recombination'.