Reversible air-induced optical and electrical modulation of methylammonium lead bromide (MAPbBr3) single crystals

被引：11
作者：
Zhang, Huotian [1 ]
Liu, Yiting [2 ]
Lu, Haizhou [1 ]
Deng, Wan [3 ]
Yang, Kang [3 ]
Deng, Zunyi [3 ]
Zhang, Xingmin [4 ]
Yuan, Sijian [1 ]
Wang, Jiao [1 ]
Niu, Jiaxin [2 ]
Zhang, Xiaolei [2 ]
Jin, Qingyuan [2 ]
Feng, Hongjian [3 ]
Zhan, Yiqiang [1 ]
Zheng, Lirong [1 ,5 ]
机构：
[1] Fudan Univ, SIST, State Key Lab ASIC & Syst, Shanghai 200433, Peoples R China
[2] East China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China
[3] Northwest Univ, Sch Phys, Xian 710069, Shaanxi, Peoples R China
[4] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201203, Peoples R China
[5] Royal Inst Technol KTH, iPack VINN Excellence Ctr, S-16440 Stockholm, Sweden
来源：
APPLIED PHYSICS LETTERS | 2017年 / 111卷 / 10期
基金：
上海市自然科学基金; 中国博士后科学基金;
关键词：
ORGANOMETAL HALIDE PEROVSKITE; LIGHT-EMITTING-DIODES; SOLAR-CELLS; EFFICIENT; PHOTOLUMINESCENCE; IODIDE; RECOMBINATION; DEGRADATION; PERFORMANCE; CH3NH3PBI3;
D O I：
10.1063/1.5001843
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The photoluminescence (PL) variations of organic-inorganic hybrid lead halide perovskites in different atmospheres are well documented, while the fundamental mechanism still lacks comprehensive understandings. This study reports the reversible optical and electrical properties of methylammonium lead bromide (MAPbBr(3) or CH3NH3PbBr3) single crystals caused by air infiltration. With the change in the surrounding atmosphere from air to vacuum, the PL intensity of perovskite single crystals decreases, while the conductivity increases. By means of first-principles computational studies, the shallow trap states are considered as key elements in PL and conductivity changes. These results have important implications for the characterization and application of organic-inorganic hybrid lead halide perovskites in vacuum. (C) 2017 Author(s).
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页数：5
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