Why is exciton dissociation so efficient at the interface between a conjugated polymer and an electron acceptor?

被引：258
作者：
Arkhipov, VI
Heremans, P
Bässler, H
机构：
[1] IMEC, B-3001 Heverlee, Belgium
[2] Univ Marburg, Inst Phys Nucl & Macromol Chem, D-35032 Marburg, Germany
来源：
APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 25期
关键词：
D O I：
10.1063/1.1586456
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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. (C) 2003 American Institute of Physics.
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页码：4605 / 4607
页数：3
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