| http://www.w3.org/ns/prov#value | - In this step, a TCO (transparent conductive oxide) layer 822, preferably formed of a material such as tin oxide, indium oxide, indium tin oxide, zinc oxide, cadmium stannate or combinations thereof is added atop the p-layer 820c of the top most cell 812c, to function as the top electrode of the cell 10.
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