Why is exciton dissociation so efficient at the interface between a conjugated polymer and an electron acceptor?
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- 23 June 2003
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 82 (25) , 4605-4607
- https://doi.org/10.1063/1.1586456
Abstract
Although doping of a conjugated polymer by electron acceptors strongly facilitates exciton dissociation into geminate pairs of carriers, the yield of free carrier photogeneration can be high only at high doping levels, that is, in polymer/acceptor blends. We suggest a model that explains how excitons can efficiently dissociate into free carriers at an intrinsic polymer/acceptor interface despite the Coulomb interaction between the charges within precursor geminate pairs.Keywords
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