Fig. 4: Stability of the PbI2-FACsMA and amo-FACsMA PSCs.
From: Amorphous (lysine)2PbI2 layer enhanced perovskite photovoltaics
a The shelf-life stability of unencapsulated PbI2-FACsMA and amo-FACsMA PSCs. b The long-term operational stability of FACsMA and amo-FACsMA PSCs. c The long-term operational stability of PbI2-FACsMA and amo-FACsMA PSCs at 85 °C. d Cross-section images of PbI2-FACsMA and amo-FACsMA PSCs after the 500-h operational stability test at their MPP. e TOF-SIMS depth profiles for the aged devices based on PbI2-FACsMA and amo-FACsMA perovskites, Corresponding (f) 3D MA+/FA+ distribution in the aged PSCs.
