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Microscopic Analysis of Organic Solar Cells by Simultaneous Measurements of ESR and Device Performance

Published online by Cambridge University Press:  09 January 2014

Kazuhiro Marumoto ,
Tatsuya Nagamori  and
Masaki Yabusaki
Kazuhiro Marumoto
Affiliation:
Division of Materials Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan Japan Science and Technology Agency (JST), PRESTO, Kawaguchi, Saitama 322-0012, Japan Tsukuba Research Center for Interdisciplinary Materials Science (TIMS), University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
Tatsuya Nagamori
Affiliation:
Division of Materials Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
Masaki Yabusaki
Affiliation:
Division of Materials Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
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Abstract

Light-induced electron spin resonance (LESR) study of polymer solar cells has been performed to investigate accumulated hole carriers in these devices under device operation. We analyzed clear correlation between the number of accumulated holes in regioregular poly(3-hexylthiophene) (P3HT) evaluated by LESR and the deterioration of device performance (Voc, Jsc) observed using the same device under simulated solar irradiation. The effects of hole accumulation with deep trapping levels formed in P3HT at the organic interfaces on the performance are examined by considering interfacial electric dipole layers and charge-carrier scattering by accumulated holes.

Keywords

photovoltaicelectron spin resonanceorganic
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1639: Symposium Y – Adaptive Soft Matter through Molecular Networks , 2014 , mrsf13-1639-y03-37-n03-37
Copyright
Copyright © Materials Research Society 2014 

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References

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