The Effect of Cs/FA Ratio on the Long‐Term Stability of Mixed Cation Perovskite Solar Cells

Perovskite Solar Cells In article number 2100660, Do-Hyung Kim, Han-Ki Kim, and co-workers found that the excel-lent long-term stability originates from the appropriate tolerance factor and low thermody-namic decomposition energy, which underpins the strong potential for the commercializa-tion of Cs-containing mixed FAPbI3 perovskite solar cells.