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Proceedings Paper

Implications of a reduced polaron recombination on polymer: fullerene solar cells
Author(s): Carsten Deibel; Alexander Wagenpfahl; Andreas Baumann; Vladimir Dyakonov
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Paper Abstract

Studying polymer:fullerene solar cells, we find that the bimolecular recombination is much lower than the anticipated Langevin recombination. In our study, we investigate the performance of annealed P3HT:PCBM bulk heterojunction solar cells by current-voltage characterisation, and complement these measurements with photo-CELIV experiments. We find that at room temperature the bimolecular recombination rate is reduced by a factor of about 50 as compared to the Langevin rate. We discuss the implications of this reduction on the solar cell performance, using a one-dimensional numeric simulator to analyse the experimental results, and compare the reduced recombination rates with the Langevin rates.

Paper Details

Date Published: 3 September 2008
PDF: 6 pages
Proc. SPIE 7052, Organic Photovoltaics IX, 70520N (3 September 2008); doi: 10.1117/12.794751
Show Author Affiliations
Carsten Deibel, Julius-Maximilians-Univ. of Würzburg (Germany)
Alexander Wagenpfahl, Julius-Maximilians-Univ. of Würzburg (Germany)
Andreas Baumann, Julius-Maximilians-Univ. of Würzburg (Germany)
Vladimir Dyakonov, Julius-Maximilians-Univ. of Würzburg (Germany)
Bavarian Ctr. for Applied Energy Research (Germany)

Published in SPIE Proceedings Vol. 7052:
Organic Photovoltaics IX
Zakya H. Kafafi; Paul A. Lane, Editor(s)

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