Ambience dependent photoluminescence reveals the localization and trap filling effects in CH3NH3PbI3-xClx perovskite films

被引：10

作者：

Li, Jing ^{[1
]}

Yu, Qianqian ^{[1
]}

Lu, Bin ^{[1
]}

He, Haiping ^{[1
]}

Ye, Zhizhen ^{[1
]}

机构：

[1] Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2017年 / 5卷 / 01期

基金：

中国国家自然科学基金;

关键词：

LIGHT-EMITTING-DIODES; ORGANOLEAD TRIHALIDE PEROVSKITES; ORGANOMETAL HALIDE PEROVSKITE; SOLAR-CELLS; HIGH-PERFORMANCE; PASSIVATION; EXCITONS; EFFICIENCY; CARRIERS; SINGLE;

D O I：

10.1039/c6tc04411e

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The photophysics of organolead trihalide perovskites are still not fully understood. Here we report that the photoluminescence (PL) lineshape, decay features, and intensity of solution-processed CH3NH3PbI3-xClx films are highly sensitive to the ambience. The radiative recombination actually consists of two decay channels corresponding to recombination of extended and localized states, respectively. The PL decay can be well described by a model considering the carrier localization, surface band bending, and trapping-detrapping of carriers.

引用

页码：54 / 58

页数：5

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