The identification and characterization of defect states in hybrid organic-inorganic perovskite photovoltaics

被引：343
作者：
Duan, Hsin-Sheng
Zhou, Huanping
Chen, Qi
Sun, Pengyu
Luo, Song
Song, Tze-Bin
Bob, Brion
Yang, Yang [1 ]
机构：
[1] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2015年 / 17卷 / 01期
关键词：
HETEROJUNCTION SOLAR-CELLS; HALIDE PEROVSKITES; HIGH-PERFORMANCE; LOW-COST; EFFICIENT; TRANSPORT; ORIGINS;
D O I：
10.1039/c4cp04479g
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：
Thin film photovoltaic cells based on hybrid halide perovskite absorbers have emerged as promising candidates for next generation photovoltaics. Here, we have characterized and identified the defect energy distribution in the CH3NH3PbI3 perovskite using admittance spectroscopy, which reveals a deep defect state similar to 0.16 eV above the valence band. According to theoretical calculations, the defect state is possibly attributed to iodine interstitials (I-i), which can become the non-radiative recombination centers in the absorber.
引用
收藏
页码：112 / 116
页数：5
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