Chlorobenzenesulfonic Potassium Salts as the Efficient Multifunctional Passivator for the Buried Interface in Regular Perovskite Solar Cells (Adv. Energy Mater. 20/2022)

Perovskite Solar Cells In article number 2200417, Juan Zhao, Jie Zhong, and co-workers report the use of an organic potassium salt with chlorine groups (3Cl-BSAK) to modify the buried SnO2/perovskite interface in perovskite solar cells. A high efficiency of 24.27% and an open-circuit voltage up to 1.191 V of modified devices are obtained with elevated stability.