Elucidating the Mechanisms Underlying PCBM Enhancement of CH3NH3PbI3 Perovskite Solar Cells Using GIXRD and XAFS

In this study, the stability mechanism of the optimized methyl ammonium lead triiodide (CH3NH3PbI3, MAPbI3)/[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) perovskite active layer upon exposure to moisture, light, and heating was investigated.