Insight into efficient photoluminescence regulation mechanism by lattice distortion and Mn2+ doping in organic-inorganic hybrid perovskites

Hui Wang,Chao Wang,Mengjiao Sun,Zhen Zhang,Guangjiu Zhao

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy（2023）

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摘要

•Dopping Mn2+ reduced defect states of (DETA)PbBr5·H2O, improving photoluminescence intensity.•PLQY of (DETA)Pb0.2Mn0.8Br5·H2O was enhanced from 1.81% to 20.96%.•A correlation between steric hindrance of ammonium cation and photophysical properties is shown.

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关键词

Doped perovskite,Free exciton,Self-trapped exciton,Defect emission,Energy transfer

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