Improved Performance of Printable Perovskite Solar Cells with Bifunctional Conjugated Organic Molecule

被引：243

作者：

Hu, Yue ^{[1
]}

Zhang, Zhihui ^{[1
]}

Mei, Anyi ^{[1
]}

Jiang, Youyu ^{[1
]}

Hou, Xiaomeng ^{[1
]}

Wang, Qifei ^{[1
]}

Du, Kai ^{[2
]}

Rong, Yaoguang ^{[1
]}

Zhou, Yinhua ^{[1
]}

Xu, Gengzhao ^{[2
]}

Han, Hongwei ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Michael Gratzel Ctr Mesoscop Solar Cells, Wuhan 430074, Hubei, Peoples R China

[2] Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Suzhou 215123, Peoples R China

来源：

ADVANCED MATERIALS | 2018年 / 30卷 / 11期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

bifunctional; conjugated molecules; perovskites; printable; solar cells; EFFICIENT; DEGRADATION; HYSTERESIS; STABILITY; LENGTHS;

D O I：

10.1002/adma.201705786

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A bifunctional conjugated organic molecule 4-(aminomethyl) benzoic acid hydroiodide (AB) is designed and employed as an organic cation in organic-inorganic halide perovskite materials. Compared with the monofunctional cation benzylamine hydroiodide (BA) and the nonconjugated bifunctional organic molecule 5-ammonium valeric acid, devices based on AB-MAPbI(3) show a good stability and a superior power conversion efficiency of 15.6% with a short-circuit current of 23.4 mA cm(-2), an open-circuit voltage of 0.94 V, and a fill factor of 0.71. The bifunctional conjugated cation not only benefits the growth of perovskite crystals in the mesoporous network, but also facilitates the charge transport. This investigation helps explore new approaches to rational design of novel organic cations for perovskite materials.

引用

页数：7

共 45 条

[1] Organometal halide perovskite solar cells: degradation and stability [J].