Dual‐Doping Strategy of Metal Chlorides in Ambient Air with High Humidity for Achieving Highly Air‐Stable All‐Inorganic Perovskite Solar Cells

Perovskite Solar Cells In article number 2400216, Feng Hong, Fei Xu, and co-workers report a dual doping strategy with CaCl2 and InCl3 additives to improve the phase stability and photoelectric properties of CsPbI2Br films. Thus, the unencapsulated dual doping perovskite solar cell exhibits high humidity storage and long-term optical stability, remaining 90% of the original power conversion efficiency after aging 2400 hours under ambient air (50% relative humidity) and 1500 hours under continuous illumination, respectively.