Hybrid perovskites for photovoltaics: Insights from first principles

被引：188

作者：

Filippetti, A. ^{[1
]}

Mattoni, A. ^{[1
]}

机构：

[1] Univ Cagliari, Dipartimento Fis, UOS Cagliari, CNR IOM, I-09042 Cagliari, Italy

来源：

PHYSICAL REVIEW B | 2014年 / 89卷 / 12期

关键词：

ORGANOMETAL HALIDE PEROVSKITES; HETEROJUNCTION SOLAR-CELLS; QUANTUM-DOT PHOTOVOLTAICS; ELECTRONIC-PROPERTIES; CRYSTAL-CHEMISTRY; TRANSPORT; CH3NH3PBI3; DEPOSITION; CL;

D O I：

10.1103/PhysRevB.89.125203

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

methylammonium lead iodide perovskites at the core of recently proposed solar cells with exceptionally large quantum conversion efficiency are studied by first-principles methods. Large absorption coefficients ( 0.030.04 nm(-1) for wavelength similar to 500 nm) and small effective masses suited for both n-type and p-type transport are obtained as a consequence of their peculiar structural and electronic characteristics. In particular, the presence of a direct gap between highly dispersed Pb( 6s)-I( 5(p)) valence bands and Pb( 6(p)) conduction bands is the key ingredient at the basis of their excellent performance in photovoltaic applications.

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页数：8

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