Issue 1, 2012
From the journal:

Energy & Environmental Science

Non-Langevin bimolecular recombination in a silole-based polymer:PCBM solar cell measured by time-resolved charge extraction and resistance-dependent time-of-flight techniques

Tracey M. Clarke,*a   Jeff Peet,b   Patrick Denk,c   Gilles Dennler,bd   Christoph Lungenschmiedb  and  Attila J. Mozer*a  

* Corresponding authors

a ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, North Wollongong, NSW, Australia
E-mail: tclarke@uow.edu.au, attila@uow.edu.au

b Konarka Technologies, 116 John St., Suite 12, Lowell, Massachusetts, USA

c Konarka Austria, Altenbergerstrasse 69, Linz, Austria

d IMRA Europe, 220, rue Albert Caquot - BP 213, Sophia-Antipolis Cedex, France

Abstract

The silole-based non-Langevin conjugated polymer KP115 has been used to demonstrate that circuit resistance is a crucial parameter in time-of-flight measurements of organic photovoltaic cells, providing a resistance-dependent bimolecular recombination coefficient. The origin of this behaviour is the biphasic decay dynamics present in KP115:PCBM devices (observed using a novel time-dependent charge extraction technique), which time-of-flight cannot accurately characterise.

Graphical abstract: Non-Langevin bimolecular recombination in a silole-based polymer:PCBM solar cell measured by time-resolved charge extraction and resistance-dependent time-of-flight techniques

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Article information

DOI
https://doi.org/10.1039/C1EE02434E
Article type
Communication
Submitted
22 Aug 2011
Accepted
17 Oct 2011
First published
31 Oct 2011

Energy Environ. Sci., 2012,5, 5241-5245

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Non-Langevin bimolecular recombination in a silole-based polymer:PCBM solar cell measured by time-resolved charge extraction and resistance-dependent time-of-flight techniques

T. M. Clarke, J. Peet, P. Denk, G. Dennler, C. Lungenschmied and A. J. Mozer, Energy Environ. Sci., 2012, 5, 5241 DOI: 10.1039/C1EE02434E

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