Journal
ADVANCED MATERIALS
Volume 22, Issue 33, Pages 3672-+Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201001010
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Funding
- U.K. Engineering and Physical Sciences Research Council
- George and Lillian Schiff Foundation
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The electric field dependence of transient optical absorption of photogenerated charge carriers in working organic photovoltaic cells is reported. Charge lifetimes are extended under reverse bias, revealing that the mechanism of photocurrent generation is the electric field-assisted separation of Coulombically bound charge pairs in kinetic competition with geminate charge recombination.
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