Title

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

RIS ID

47032

Publication Details

Clarke, T. M., Peet, J., Denk, P., Dennler, G., Lungenschmied, C. & Mozer, A. J. (2012). 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. Energy and Environmental Science, 5 (1), 5241-5245.

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.

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Link to publisher version (DOI)

http://dx.doi.org/10.1039/c1ee02434e