Polaron Recombination in Pristine and Annealed Bulk Heterojunction Solar Cells

Preprint

30 October 2008

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.0810.0542

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.

Keywords

POLARON RECOMBINATION
BULK HETEROJUNCTION
RECOMBINATION
POLYTHIOPHENE
SOLAR CELLS
TEMPERATURE
FULLERENE
PRISTINE
ANNEALED

All Related Versions

Version 1, 2008-10-03, ArXiv
Version 2, 2008-10-30, ArXiv
Published version: Applied Physics Letters, 93 (16), 163303.

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