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Copper Zinc Sulfur Compound Solar Cells Fabricated by Spray Pyrolysis Deposition for Solar Cells

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DOI: 10.4236/nr.2013.41A018    4,081 Downloads   7,319 Views   Citations

ABSTRACT

Cu-Zn-S (CZS) films were deposited by the spray pyrolysis method. As-deposited CZS film showed a low crystallinity. The resistivity of CZS film with Cu/(Cu+Zn) ratio of 50% is around 10-2Ω﹒cm. The CZS film elements using spray Cu-Zn (=1:1) solution with thiourea was confirmed as  Cu:Zn:Sn=2:2:3 by ICP-MS and EDX. The band gap of CZS films was varied in the range of 1.8 - 3.5 ev when the  Cu/(Cu+Zn)ratio was increased from 0 to 67%; CZS film with Cu/(Cu+Zn)ratio of 50 % showed an wide band gap of 2 eV. The photovoltaic characteristics were confirmed with cell structure of . The best cell was observed at the CZS films with Cu/(Cu+Zn)ratio of 50%; these cells depicted a conversion efficiency of 1.7%.

 

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

N. Kitagawa, S. Ito, D. Nguyen and H. Nishino, "Copper Zinc Sulfur Compound Solar Cells Fabricated by Spray Pyrolysis Deposition for Solar Cells," Natural Resources, Vol. 4 No. 1A, 2013, pp. 142-145. doi: 10.4236/nr.2013.41A018.

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