物理学进展2023，Vol.43Issue(6)：161-177,17.DOI:10.13725/j.cnki.pip.2023.06.001
金属卤化物钙钛矿半导体中的自陷激子
Self-trapped Excitons in Metal Halide Perovskites
摘要
Abstract
In polar crystals,excited electron-hole pairs can be captured by the deformation potential field created by lattice distortion upon photoexcitation,due to strong electron-phonon interactions,thereby forming self-trapped excitons.Metal halide perovskites are semiconduc-tors that display efficient self-trapped exciton luminescence in various systems due to their ionic crystal nature with strong electron-phonon interactions and a deformable lattice.Conse-quently,they are considered ideal for creating high-quality white light sources.However,the understanding of the self-trapped exciton luminescence mechanism in metal halide perovskites is still relatively scarce and lags far behind the development of devices.To this end,this paper summarizes the recent research progress on the formation conditions,formation mechanism and related excited state dynamics of self-trapped excitons in metal halide perovskites semi-conductors from the perspective of the fundamental physics of self-trapped excitons,and gives an outlook on the future research based on the self-trapped exciton mechanism in this system,so as to provide a clearer physical image for the study of self-trapped excitons in this system.关键词
金属卤化物钙钛矿半导体/自陷激子/电子-声子耦合/激发态动力学Key words
metal halide perovskite semiconductors/self-trapped excitons/electron-phonon coupling/excited state dynamics分类
化学化工引用本文复制引用
张清凯,王宇箫,张春峰..金属卤化物钙钛矿半导体中的自陷激子[J].物理学进展,2023,43(6):161-177,17.基金项目
项目受到自然科学基金(No.22225305)、重点研发(2022YFB3206900)和南通市民生计划项目支持(MS22022066). （No.22225305）
