Fig. 2: Material characteristics of the mixed-halide perovskite MWs.
From: In-material physical computing based on reconfigurable microwire arrays via halide-ion segregation
a–d The HRTEM images of the mixed-halide perovskite on mica. Inside, a and d display the epitaxy relation of perovskite and mica, while b and c show the interface of Br-rich and I-rich regions. e Schematic diagrams to show the epitaxy growth relationship of CsPbX3 on mica and the corresponding growth mechanism. f EDS mapping of the sample FIB slides. g, h The models of the migration path of Br (g) and I (h) ions. i Corresponding energy profile.
