High Charge Carrier Mobilities and Lifetimes in Organolead Trihalide Perovskites

被引：2886

作者：

Wehrenfennig, Christian ^{[1
]}

Eperon, Giles E. ^{[1
]}

Johnston, Michael B. ^{[1
]}

Snaith, Henry J. ^{[1
]}

Herz, Laura M. ^{[1
]}

机构：

[1] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England

来源：

ADVANCED MATERIALS | 2014年 / 26卷 / 10期

基金：

英国工程与自然科学研究理事会;

关键词：

CH3NH3PbI3; recombination; diffusion length; terahertz; photovoltaics; HETEROJUNCTION SOLAR-CELLS; TERAHERTZ CONDUCTIVITY; DYNAMICS; HALIDE; TIO2; TRANSPORT; EXCITON; RECOMBINATION; COMPOUND; BULK;

D O I：

10.1002/adma.201305172

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Organolead trihalide perovskites are shown to exhibit the best of both worlds: charge-carrier mobilities around 10 cm2 V-1 s -1 and low bi-molecular charge-recombination constants. The ratio of the two is found to defy the Langevin limit of kinetic charge capture by over four orders of magnitude. This mechanism causes long (micrometer) charge-pair diffusion lengths crucial for flat-heterojunction photovoltaics. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：1584 / 1589

页数：6

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