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arXiv · 0810.0542

Polaron Recombination in Pristine and Annealed Bulk Heterojunction Solar Cells

C. Deibel·A. Baumann·V. Dyakonov
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Abstract

We determined the dominant polaron recombination loss mechanism in pristine and annealed polythiophene:fullerene blend solar cells by applying the photo-induced charge extraction by linearly increasing voltage (photo-CELIV) method in dependence on temperature. In pristine samples, we find a strongly temperature dependent bimolecular polaron recombination rate, which is reduced as compared to the Langevin theory. For the annealed sample, we observe a polaron decay rate which follows a third order of carrier concentration almost temperature independently.

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C. Deibel, A. Baumann, V. Dyakonov. 2008-10-30. Polaron Recombination in Pristine and Annealed Bulk Heterojunction Solar Cells. https://doi.org/10.1063/1.3005593

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