KF-Doped SnO2 as an electron transport layer for efficient inorganic CsPbI2Br perovskite solar cells with enhanced open-circuit voltages

Abstract
KF was first introduced into the SnO2 ETL for all-inorganic CsPbI2Br PVSCs with enhanced performance by regulating the work function and passivating defects of the perovskite.
Funding Information
  • National Natural Science Foundation of China (U1605241)
  • Natural Science Foundation of Fujian Province (2018J01026)