Implications of a reduced polaron recombination on polymer: fullerene solar cells

Carsten Deibel; Alexander Wagenpfahl; Andreas Baumann; Vladimir Dyakonov

doi:10.1117/12.794751

3 September 2008 Implications of a reduced polaron recombination on polymer: fullerene solar cells

Carsten Deibel, Alexander Wagenpfahl, Andreas Baumann, Vladimir Dyakonov

Proceedings Volume 7052, Organic Photovoltaics IX; 70520N (2008) https://doi.org/10.1117/12.794751
Event: Photonic Devices + Applications, 2008, San Diego, California, United States

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.

Citation Download Citation

Carsten Deibel, Alexander Wagenpfahl, Andreas Baumann, and Vladimir Dyakonov "Implications of a reduced polaron recombination on polymer: fullerene solar cells", Proc. SPIE 7052, Organic Photovoltaics IX, 70520N (3 September 2008); https://doi.org/10.1117/12.794751

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