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

被引：338

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.

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页码：112 / 116

页数：5

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