Polaron Recombination in Pristine and Annealed Bulk Heterojunction Solar Cells

C. Deibel; A. Baumann; A. Wagenpfahl; V. Dyakonov

doi:10.1016/j.synthmet.2009.07.014

Polaron Recombination in Pristine and Annealed Bulk Heterojunction Solar Cells

Materials Science 2010-02-08 v1

Authors: C. Deibel , A. Baumann , A. Wagenpfahl , V. Dyakonov

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Abstract

The major loss mechanism of photogenerated polarons was investigated in P3HT:PCBM solar cells by the photo-CELIV technique. For pristine and annealed devices, we find that the experimental data can be explained by a bimolecular recombination rate reduced by a factor of about ten (pristine) and 25 (annealed) as compared to Langevin theory. Aided by a macroscopic device model, we discuss the implications of the lowered loss rate on the characteristics of polymer:fullerene solar cells.

Keywords

polaron recombination bulk heterojunction solar cells P3HT:PCBM photo-CELIV bimolecular recombination Langevin theory

Cite

@article{arxiv.0907.2559,
  title  = {Polaron Recombination in Pristine and Annealed Bulk Heterojunction Solar Cells},
  author = {C. Deibel and A. Baumann and A. Wagenpfahl and V. Dyakonov},
  journal= {arXiv preprint arXiv:0907.2559},
  year   = {2010}
}

Comments

3 pages, 4 figures

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