Improved stability of perovskite solar cells in ambient air by controlling the mesoporous layer

被引：94

作者：

Yin, Jun ^{[1
,2
]}

Cao, Jing ^{[2
]}

He, Xu ^{[1
]}

Yuan, Shangfu ^{[2
]}

Sun, Shibo ^{[1
]}

Li, Jing ^{[1
,3
]}

Zheng, Nanfeng ^{[2
]}

Lin, Liwei ^{[3
]}

机构：

[1] Xiamen Univ, Pen Tung Sah Inst Micronano Sci & Technol, Xiamen 361005, Peoples R China

[2] Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Collaborat Innovat Ctr Chem Energy Mat,Dept Chem, Xiamen 361005, Peoples R China

[3] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2015年 / 3卷 / 32期

基金：

中国国家自然科学基金;

关键词：

TRANSPORT; FILMS; RECOMBINATION; PASSIVATION; TEMPERATURE;

D O I：

10.1039/c5ta02843d

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：

Recently, organometal trihalide perovskite solar cells (PSCs) have undergone intense development and show huge potential as the next generation of high efficiency photovoltaic (PV) cells. However, the stability of these devices still needs to be improved to enable commercialization, especially the photovoltaic stability under ambient conditions. In this work, the demonstrated greatly improved stability of CH3NH3PbI3 based PSCs in ambient air has been achieved by controlling the mesoporous TiO2 (m-TiO2) layer in the devices. With the optimized thickness of the m-TiO2 layer, rather stable devices which maintain over 85% of the initial power conversion efficiency (PCE) even after similar to 2400 hours (100 days) storage in air were accomplished. It is evidenced that the suppressed decomposition of perovskite and the well-kept charge transportation are majorly responsible for the improved air-stability of the device.

引用

页码：16860 / 16866

页数：7

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