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Materials 2010, 3(11), 4915-4921; doi:10.3390/ma3114915

Photovoltaic Properties in Interpenetrating Heterojunction Organic Solar Cells Utilizing MoO3 and ZnO Charge Transport Buffer Layers

Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
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Received: 19 October 2010 / Accepted: 2 November 2010 / Published: 8 November 2010
(This article belongs to the Special Issue Solar Energy Materials)
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Abstract

Organic thin-film solar cells with a conducting polymer (CP)/fullerene (C60) interpenetrating heterojunction structure, fabricated by spin-coating a CP onto a C60 deposit thin film, have been investigated and demonstrated to have high efficiency. The photovoltaic properties of solar cells with a structure of indium-tin-oxide/C60/ poly(3-hexylthiophene) (PAT6)/Au have been improved by the insertion of molybdenum trioxide (VI) (MoO3) and zinc oxide charge transport buffer layers. The enhanced photovoltaic properties have been discussed, taking into consideration the ground-state charge transfer between PAT6 and MoO3 by measurement of the differential absorption spectra and the suppressed contact resistance at the interface between the organic and buffer layers. View Full-Text
Keywords: organic solar cells; interpenetrating heterojunction; buffer layers; molybdenum trioxide; zinc oxide organic solar cells; interpenetrating heterojunction; buffer layers; molybdenum trioxide; zinc oxide
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Hori, T.; Moritou, H.; Fukuoka, N.; Sakamoto, J.; Fujii, A.; Ozaki, M. Photovoltaic Properties in Interpenetrating Heterojunction Organic Solar Cells Utilizing MoO3 and ZnO Charge Transport Buffer Layers. Materials 2010, 3, 4915-4921.

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