Thermal Stability of Mixed Cation Metal Halide Perovskites in Air

被引：132

作者：

Tang, Wanliang ^{[1
]}

Bowring, Andrea R. ^{[1
]}

Meng, Andrew C. ^{[1
]}

McGehee, Michael D. ^{[1
]}

McIntyre, Paul C. ^{[1
]}

机构：

[1] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA

来源：

ACS APPLIED MATERIALS & INTERFACES | 2018年 / 10卷 / 06期

关键词：

mixed cation; perovskite; thermal stability; in situ; XRD; SOLAR-CELLS; PERFORMANCE; CH3NH3PBI3; DECOMPOSITION; DEGRADATION; MECHANISMS; LENGTHS; LAYERS; LIGHT;

D O I：

10.1021/acsami.7b15263

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We study the thermal stability in air of the mixed cation organicinorganic lead halide perovskites Cs(0.17)FA(0.83)Pb(I0.83Br0.17)(3) and Cs-0.05(MA(0.17)FA(0.83))(0.95)Pb(I0.83Br0.17)(3). For the latter compound, containing both MA+ and FA+ ions, thermal decomposition of the perovskite phase was observed to occur in two stages. The first stage of decomposition occurs at a faster rate compared to the second stage and is only observed at relatively low temperatures (T < 150 degrees C). For the second stage, we find that both decomposition rate and the activation energy have similar values for Cs-0.05(MA(0.17)FA(0.83))(0.95)Pb(I0.83Br0.17)(3) and Cs(0.17)FA(0.83)Pb(I0.83Br0.17)(3), which suggests that the first stage mainly involves reaction of MA+ and the second stage mainly FA(+).

引用

页码：5485 / 5491

页数：7

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