Issue 38, 2014

Charge generation in polymer–fullerene bulk-heterojunction solar cells

Abstract

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.

Graphical abstract: Charge generation in polymer–fullerene bulk-heterojunction solar cells

Article information

Article type
Perspective
Submitted
27 Apr 2014
Accepted
19 Jun 2014
First published
04 Jul 2014

Phys. Chem. Chem. Phys., 2014,16, 20291-20304

Charge generation in polymer–fullerene bulk-heterojunction solar cells

F. Gao and O. Inganäs, Phys. Chem. Chem. Phys., 2014, 16, 20291 DOI: 10.1039/C4CP01814A

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