Lead halide perovskites (e.g., MAPbI3) are an emerging family of semiconductor materials with excellent optoelectronic properties ideally suited for photovoltaic and light-emitting applications. Significant ion migration has been reported in these materials and is one of the main mechanisms responsible for anomalous I-V hysteresis and poor stability in the perovskite solar cells.
Click here for original story, Photo-induced ion displacement in mixed-halide perovskites for a battery directly chargeable by light
Source: Phys.org