Highly efficient perovskite solar cells with precursor composition-dependent morphology

被引：27

作者：

Huang, Chun ^{[1
]}

Fu, Nianqing ^{[2
]}

Liu, Fangyang ^{[1
,3
]}

Jiang, Liangxing ^{[1
]}

Hao, Xiaojing ^{[3
]}

Huang, Haitao ^{[2
]}

机构：

[1] Cent South Univ, Sch Met & Environm, Changsha 410083, Peoples R China

[2] Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China

[3] Univ New S Wales, Sch Photovolta & Renewable Energy Engn, Sydney, NSW 2052, Australia

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2016年 / 145卷

基金：

中国国家自然科学基金;

关键词：

Perovskite Solar cell; PbCl2; Precursor composition; Thin film formation; HALIDE PEROVSKITES; LOW-COST; PERFORMANCE; CRYSTALLIZATION; CHLORIDE; EVOLUTION; FILMS;

D O I：

10.1016/j.solmat.2015.10.032

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Film uniformity and large crystalline size are indispensable and critical for obtaining high performance planar perovskite solar cells. Perovskite precursor composition plays a key role in the formation of high quality perovskite films. In this work, excess PbCl2 is deliberately introduced, and is found to facilitate the solubility of CH3NH3I in concentrated solution at room temperature. The excess PbCl2 is found to alter the formation pathway of perovskite thin films. Accordingly, the formation pathway is proposed. Analysis of the perovskite films and associated devices revealed that extremely uniform perovskite films consisting of large grains of several microns can be obtained with a small amount of excess PbCl2. The associated planar perovskite solar cells showed a reliable and reproducible efficiency of 16.1%. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：231 / 237

页数：7

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