Synergistic improvement of perovskite film quality for efficient solar cells via multiple chloride salt additives

被引：47

作者：

Wang, Pengyang ^{[1
,2
]}

Jiang, Qi ^{[1
,2
]}

Zhao, Yang ^{[1
,2
]}

Chen, Yong ^{[1
,2
]}

Chu, Zema ^{[2
]}

Zhang, Xingwang ^{[1
,2
]}

Zhou, Yuqin ^{[1
]}

You, Jingbi ^{[1
,2
]}

机构：

[1] Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China

[2] Chinese Acad Sci, Inst Semicond, Key Lab Semicond Mat Sci, Beijing 100083, Peoples R China

来源：

SCIENCE BULLETIN | 2018年 / 63卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Metal halide perovskite; Solar cells; Crystallization; Power conversion efficiency; HIGHLY EFFICIENT; CRYSTALLIZATION; TEMPERATURE; DEPOSITION; LAYERS;

D O I：

10.1016/j.scib.2018.05.003

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Perovskite crystal film quality is critical for obtaining efficient perovskite solar cells. Anti-solvent processing was used for fast crystallization of perovskite precursor film, which can form dense perovskite film. However, the crystals from this method are usually small due to the fast crystal growth process, which could lead to grain boundary recombination. Here, element chloride is introduced to enhance the perovskite layer crystallinity via slowing down the perovskite crystallization process by simultaneous introduction of methylammounium chloride (MACl) and cesium chloride (CsCl) into precursor solution. As a result, we achieve high quality of pin-hole free perovskite film with large crystal size. A power conversion efficiency of 21.55% with free of hysteresis of the device is obtained, which is among the highest efficiency of planar structure perovskite solar cells. (C) 2018 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.

引用

页码：726 / 731

页数：6

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