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Coatings 2014, 4(2), 203-213; doi:10.3390/coatings4020203

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.
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)
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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.
Keywords: Cu2O; ZnO; photovoltaic cell Cu2O; ZnO; photovoltaic cell
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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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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