Growth of an Inx(OOH,S)y Buffer Layer and Its Application to Cu(In,Ga)(Se,S)2 Solar Cells

As an alternative to a CdS buffer layer for Cu(In,Ga)Se2-based solar cells, we prepared In-based buffer layers using a chemical bath deposition method. XPS and XRD analyses revealed that the In-based buffer layers contained In2S3 and InOOH phases. Compared with CdS film, the In-based film, Inx(OOH,S)y, had higher optical transmittance and a shorter absorption edge. The Cu(In,Ga)(Se,S)2 solar cell with the Inx(OOH,S)y buffer layer had better photovoltaic properties than that with a conventional CdS buffer layer. The conversion efficiency of the best Cu(In,Ga)(Se,S)2 solar cell with Inx(OOH,S)y buffer layer was 12.55 % for an active area of 0.19 cm2.
Publisher
Trans Tech Publications
Issue Date
2005
Keywords

Cd-free buffer; Inx(OOH,S)y; Cu(In,Ga)Se2; solar cells

Citation

Materials Science Forum, Vol.475-479, pp.1681-1684

ISSN
0255-5476
URI
http://hdl.handle.net/10203/9516
Appears in Collection
MS-Conference Papers(학술회의논문)
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