Charge generation in polymer-fullerene bulk-heterojunction solar cells

被引:181
作者
Gao, Feng [1 ]
Inganas, Olle
机构
[1] Linkoping Univ, IFM, SE-58183 Linkoping, Sweden
关键词
OPEN-CIRCUIT VOLTAGE; PHOTOINDUCED ELECTRON-TRANSFER; INTERNAL QUANTUM EFFICIENCY; HOT EXCITON DISSOCIATION; CONJUGATED POLYMERS; TRANSFER STATE; PHOTOVOLTAIC CELLS; BIMOLECULAR RECOMBINATION; CARRIER GENERATION; BLEND FILMS;
D O I
10.1039/c4cp01814a
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Charge generation in organic solar cells is a fundamental yet heavily debated issue. This article gives a balanced review of different mechanisms proposed to explain efficient charge generation in polymer-fullerene bulk-heterojunction solar cells. We discuss the effect of charge-transfer states, excess energy, external electric field, temperature, disorder of the materials, and delocalisation of the charge carriers on charge generation. Although a general consensus has not been reached yet, recent findings, based on both steady-state and transient measurements, have significantly advanced our understanding of this process.
引用
收藏
页码:20291 / 20304
页数:14
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