Working Mechanism for Flexible Perovskite Solar Cells with Simplified Architecture

被引：89
作者：
Xu, Xiaobao [1 ,2 ]
Chen, Qi [1 ]
Hong, Ziruo [1 ]
Zhou, Huanping [1 ]
Liu, Zonghao [1 ,2 ]
Chang, Wei-Hsuan [1 ]
Sun, Pengyu [1 ]
Chen, Huajun [1 ]
De Marco, Nicholas [1 ]
Wang, Mingkui [2 ]
Yang, Yang [1 ]
机构：
[1] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA
[2] Huazhong Univ Sci, Sch Opt, Wuhan Natl Lab Optoelect, Technol,Elect Informat, Wuhan 430074, Hubei, Peoples R China
来源：
NANO LETTERS | 2015年 / 15卷 / 10期
基金：
美国国家科学基金会;
关键词：
Perovskite; solar cell; heterojunction; built-in potential; working mechanism; TEMPERATURE; CH3NH3PBX3; TRIHALIDE; LENGTHS; LAYER; DYE; NIO;
D O I：
10.1021/acs.nanolett.5b02126
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this communication, we report an efficient and flexible perovskite solar cell based on formamidinium lead trihalide (FAPbI(3)) with simplified configuration. The device achieved a champion efficiency of 12.70%, utilizing direct contact between metallic indium tin oxide (ITO) electrode and perovskite absorber. The underlying working mechanism is proposed subsequently, via a systematic investigation focusing on the heterojunction within this device. A significant charge storage has been observed in the perovskite, which is believed to generate photovoltage and serves as the driving force for charge transferring from the absorber to ITO electrode as well. More importantly, this simplified device structure on flexible substrates suggests its compatibility for scale-up fabrication, which paves the way for commercialization of perovskite photovoltaic technology.
引用
收藏
页码：6514 / 6520
页数：7
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