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Nongeminate recombination in organic bulk heterojunction solar cells: Contribution of exciton–polaron interaction
Abstract
A new model to explain nongeminate recombination in organic bulk heterojunction solar cells is presented. We suggest that the annihilation of excitons on charge carriers at the interface between donor and acceptor phases competes with the bimolecular recombination of Coulombically bound electron–hole pairs. The exciton–polaron interaction gives visible contribution to the reduction of Langevin recombination. An analytical formula, which describes the reduction prefactor, has been derived. We demonstrate that exciton–charge carrier interactions cause an increase of the recombination order.
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
Physica Status Solidi-Rapid Research Letters
no. 6,
edition 7,
pages 300 - 302,
ISSN: 1862-6254 - Language:
- English
- Publication year:
- 2012
- Bibliographic description:
- Szmytkowski J.: Nongeminate recombination in organic bulk heterojunction solar cells: Contribution of exciton–polaron interaction// Physica Status Solidi-Rapid Research Letters. -Vol. 6, iss. 7 (2012), s.300-302
- Verified by:
- Gdańsk University of Technology
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