CH3NH2 gas induced (110) preferred cesium-containing perovskite films with reduced PbI6 octahedron distortion and enhanced moisture stability

被引：36

作者：

Chang, Yue ^{[1
,3
]}

Wang, Li ^{[2
]}

Zhang, Jiliang ^{[4
]}

Zhou, Zhongmin ^{[1
]}

Li, Chongwen ^{[1
]}

Chen, Bingbing ^{[1
]}

Etgar, Lioz ^{[5
]}

Cui, Guanglei ^{[1
]}

Pang, Shuping ^{[1
]}

机构：

[1] Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China

[2] Qingdao Univ Sci & Technol, Qingdao 266042, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100080, Peoples R China

[4] City Univ Hong Kong, Dept Phys & Mat Sci, Hong Kong, Peoples R China

[5] Hebrew Univ Jerusalem, Inst Chem, Casali Ctr Appl Chem, IL-91905 Jerusalem, Israel

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2017年 / 5卷 / 10期

关键词：

SOLAR-CELLS; THIN-FILMS; HALIDE PEROVSKITES; PERFORMANCE; CH(3)NH(3)PBL(3); EFFICIENCY; ABSORBER; CATIONS;

D O I：

10.1039/c6ta10444d

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report here the discovery of a fancy interaction between cesium iodide (CsI) and methylamine (CH3NH2) due to the presence of the hydrogen bond. The formed CsI center dot xCH(3)NH(2) is a liquid phase, which facilitates the large scale fabrication of highly uniform cesium-containing perovskite films with strong (110) preferred orientation by the CH3NH2 gas healing process. With this method, at most 10% nonpolar Cs cations could fully dope into the crystal lattice and extremely enhance the interaction of the inorganic framework with a more symmetrical PbI6 octahedron, resulting in obvious improvement in moisture stability under continuous illumination.

引用

页码：4803 / 4808

页数：6

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