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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.

SUBMITTER: Wehrenfennig C 

PROVIDER: S-EPMC4722848 | biostudies-other | 2014 Mar

REPOSITORIES: biostudies-other

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High charge carrier mobilities and lifetimes in organolead trihalide perovskites.

Wehrenfennig Christian C   Eperon Giles E GE   Johnston Michael B MB   Snaith Henry J HJ   Herz Laura M LM  

Advanced materials (Deerfield Beach, Fla.) 20140301 10

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. ...[more]

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