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Open AccessArticle

Microstructures and Photovoltaic Properties of Zn(Al)O/Cu2O-Based Solar Cells Prepared by Spin-Coating and Electrodeposition

Department of Materials Science, The University of Shiga Prefecture, 2500 Hassaka, Hikone, Shiga 522-8533, Japan
Author to whom correspondence should be addressed.
Coatings 2014, 4(2), 203-213;
Received: 20 January 2014 / Revised: 17 March 2014 / Accepted: 20 March 2014 / Published: 31 March 2014
(This article belongs to the Special Issue Novel Thin Film Materials for Photovoltaic Applications)
PDF [760 KB, uploaded 31 March 2014]


Copper oxide (Cu2O)-based heterojunction solar cells were fabricated by spin-coating and electrodeposition methods, and photovoltaic properties and microstructures were investigated. Zinc oxide (ZnO) and Cu2O were used as n- and p-type semiconductors, respectively, to fabricate photovoltaic devices based on In-doped tin oxide/ZnO/Cu2O/Au heterojunction structures. Short-circuit current and fill factor increased by aluminum (Al) doping in the ZnO layer, which resulted in the increase of the conversion efficiency. The efficiency was improved further by growing ZnO and Cu2O layers with larger crystallite sizes, and by optimizing the Al-doping by spin coating. View Full-Text
Keywords: Cu2O; ZnO; photovoltaic cell Cu2O; ZnO; photovoltaic cell

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Oku, T.; Yamada, T.; Fujimoto, K.; Akiyama, T. Microstructures and Photovoltaic Properties of Zn(Al)O/Cu2O-Based Solar Cells Prepared by Spin-Coating and Electrodeposition. Coatings 2014, 4, 203-213.

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