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

doi:10.3390/ma3114915

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

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

Tetsuro Hori, Hiroki Moritou, Naoki Fukuoka, Junki Sakamoto, Akihiko Fujii* and Masanori Ozaki

Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan

* Author to whom correspondence should be addressed.

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.

Keywords: organic solar cells; interpenetrating heterojunction; buffer layers; molybdenum trioxide; zinc oxide

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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.

AMA 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(11):4915-4921.

Chicago/Turabian Style

Hori, Tetsuro; Moritou, Hiroki; Fukuoka, Naoki; Sakamoto, Junki; Fujii, Akihiko; Ozaki, Masanori. 2010. "Photovoltaic Properties in Interpenetrating Heterojunction Organic Solar Cells Utilizing MoO₃ and ZnO Charge Transport Buffer Layers." Materials 3, no. 11: 4915-4921.

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