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Adv Mater. 2014 Mar 12;26(10):1584-9.

High charge carrier mobilities and lifetimes in organolead trihalide perovskites.

Abstract

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.

PMID:
24757716
PMCID:
PMC4722848

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