Methylammonium-Mediated Evolution of Mixed-Organic-Cation Perovskite Thin Films: A Dynamic Composition-Tuning Process

被引：56
作者：
Li, Chongwen [1 ]
Zhou, Yuanyuan [2 ]
Wang, Li [3 ]
Chang, Yue [1 ]
Zong, Yingxia [1 ,2 ,3 ]
Etgar, Lioz [4 ]
Cui, Guanglei [1 ]
Padture, Nitin P. [2 ]
Pang, Shuping [1 ]
机构：
[1] Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
[2] Brown Univ, Sch Engn, Providence, RI 02912 USA
[3] Qingdao Univ Sci & Technol, Qingdao 266042, Peoples R China
[4] Hebrew Univ Jerusalem, Inst Chem, IL-91904 Jerusalem, Israel
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2017年 / 56卷 / 26期
基金：
美国国家科学基金会; 中国国家自然科学基金;
关键词：
crystal growth; hybrid perovskites; solar cells; thin films; SOLAR-CELLS; HALIDE PEROVSKITES; TRIHALIDE; EFFICIENT; PHOTOVOLTAICS; FORMAMIDINIUM;
D O I：
10.1002/anie.201704188
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Methylammonium-mediated phase-evolution behavior of FA(1-x)MA(x)PbI(3) mixed-organic-cation perovskite (MOCP) is studied. It is found that by simply enriching the MOCP precursor solutions with excess methylammonium cations, the MOCPs form via a dynamic composition-tuning process that is key to obtaining MOCP thin films with superior properties. This simple chemical approach addresses several key challenges, such as control over phase purity, uniformity, grain size, composition, etc., associated with the solution-growth of MOCP thin films with targeted compositions.
引用
收藏
页码：7674 / 7678
页数：5
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