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
收藏
页码：1584 / 1589
页数：6
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