Fig. 3: Photoelectricity-induced halide-ion segregation (PEHS) and mixing within CsPbBr1.5I1.5 MWs.
From: In-material physical computing based on reconfigurable microwire arrays via halide-ion segregation
a Schematic of the confocal PL microspectroscopy system. b Normalized PL emission spectra recorded upon illumination of 20 mW cm−2 with applied 0 V 20 s, followed by applied +30 V for 2 s, then inverse to −30V for 10 s, and eventually removing the bias. c Schematic diagram of 4 stages in the whole bias-modulated PEHS process. d PL spectra of the corresponding stages. e Fluorescence variables of the perovskite MWs in the bias-modulated process.
