Improved oxidation stability of tin iodide cubic perovskite treated by 5-ammonium valeric acid iodide

被引：34

作者：

Hoshi, Hajime ^{[1
]}

Shigeeda, Naoyuki ^{[1
]}

Dai, Toshihiro ^{[1
]}

机构：

[1] Tokyo Univ Sci, Dept Appl Chem, 1-1-1 Daigaku Dori, Yamaguchi 7560884, Japan

来源：

MATERIALS LETTERS | 2016年 / 183卷

关键词：

Perovskite solar cell; Tin iodide perovskite; Stability; ORGANOMETAL HALIDE PEROVSKITES; SOLAR-CELLS; PERFORMANCE; DEPOSITION;

D O I：

10.1016/j.matlet.2016.07.048

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tin iodide cubic perovskite, CH3NH3SnI3, is a promising light absorbing material for perovskite solar cells. However, this compound is known to be unstable in air. According to a previous paper, CH3NH3SnI3 partially decomposes within 2 h before total decomposition after ld. We prepared CH3NH3SnI3 with the addition of 5-ammonium valeric acid iodide (5-AVAI). In CH3NH3PbI3, 5-AVAI was known to improve the power conversion efficiency and stability by forming (5-AVAI)(x)(CH3NH3)(1-x)PbI3. Powder X-ray diffraction analysis revealed that the tin iodide cubic perovskite structure is maintained irrespective of the addition of 5-AVAI, which differs from the behavior of CH3NH3PbI3 perovskite. Moreover, the addition of 5-AVAI significantly improved the oxidation stability of the material in the air. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：391 / 393

页数：3

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