Reduced Bimolecular Recombination in Conjugated Polymer Donor/Fullerene Acceptor Bulk Heterojunction Solar Cells

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doi:10.1071/CH12028

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Affiliated with RACI

Royal Australian
Chemical Institute

Reduced Bimolecular Recombination in Conjugated Polymer Donor/Fullerene Acceptor Bulk Heterojunction Solar Cells

Attila J. Mozer ^A ^B and Tracey M. Clarke ^A

^A Intelligent Polymer Research Institute and the ARC Centre of Excellence for Electromaterials Science, University of Wollongong, North Wollongong, NSW 2500, Australia.
^B Corresponding author. Email: attila@uow.edu.au

Australian Journal of Chemistry 65(5) 442-447 http://dx.doi.org/10.1071/CH12028
Submitted: 19 January 2012 Accepted: 15 March 2012 Published: 28 May 2012





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Abstract

We show significantly reduced bimolecular recombination in a novel silole-based copolymer (KP115):fullerene blend, which allows the fabrication of polymer solar cells with relatively thick active layers. This leads to improved device efficiencies and makes roll-to-roll printing much easier. The origin of the reduced recombination, however, is not known. Our recent data suggest that published models are inadequate to explain this phenomenon.

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