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Title
Charge generation in polymer-fullerene bulk-heterojunction solar cells  PDF

Article in journal
Authors
Feng Gao, Olle Inganäs
Publication Year
2014
Source
Physical Chemistry, Chemical Physics - PCCP, 2014, (16)38, 20291-20304
Link to Source (DOI)
10.1039/c4cp01814a
Abstract
<p>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.</p>