Photo/current-induced halide segregation in mixed-halide perovskites-based devices

Mixed-halide perovskites (MHPs) are popular in the development of both solar cells and light-emitting diodes (LEDs). Photo/current-induced halide segregation (PIHS/CIHS) disrupts original carrier dynamics, leading to carrier funneling into narrow-Eg domains, and deteriorates the functional devices. Instead of suppression, we here attempt to propose our viewpoints on prospective exploitation of this behavior.