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Progress in fabricating Cu(In,Ga)Se 2 (CIGS) solar cells with ZnS(O,OH) buffer layers prepared by chemical bath deposition (CBD) is discussed in this paper. Such buffer layers could potentially replace CdS in the CIGS solar cell. Total-area conversion efficiency of up to 18.6% has been reported previously using ZnS(O,OH) prepared by CBD. The reported 100 nm CBD ZnS(O,OH) layer was prepared...
We present an optimization of the CdS chemical bath deposition process as applied to high-efficiency Cu(In,Ga)Se 2 photovoltaic thin-film absorber materials. Specifically, we investigated deposition time (thickness), bath temperature (65, 80 and 90 o C) and a Cd 2+ partial-electrolyte treatment of the chalcopyrite absorber prior to CdS deposition. We found that thinner...
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