Laser induced ion migration in all-inorganic mixed halide perovskite micro-platelets.

ABSTRACT: Despite intensive research on ion migration (IM) in organic-inorganic hybrid metal halide perovskites, much less is known about the irradiation effect on IM in all-inorganic perovskites, especially for those single crystals lacking complicated grain boundaries. Herein, the real-time IM process and the corresponding photoluminescence (PL) spectra induced by laser irradiation in all-inorganic CsPbBr _x I_(3-x) single crystals prepared by chemical vapor deposition (CVD) were investigated. We proposed that a local electric field acts as a driving force for IM and confirmed this by applying a bias to an indium tin oxide (ITO)/perovskite/ITO configuration. According to the control experiments on CsPbBr _x I_(3-x) micro-platelets

SUBMITTER: Wang Z 

PROVIDER: S-EPMC9417044 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature