CuxS(p) — CdZnS(n) — CdS(n+) Evaporated Thin Film Solar Cells
The orientation and size of crystallites may be improved in Cd1-y ZnyS films when they are condensed on a CdS layer previously deposited in the same vacuum provided that the ZnS concentration y does not exceed 12 %. Backwall cells were made by means of the solid state reaction for different ZnS concentrations. The photovoltage increases with ZnS concentration y while very little changes occur for the photocurrent when y values are in the range 0-0.12.
The current transport mechanism remains dominated by recombination tunneling currents. L.B.I.C. scannings indicate that the photoresponse of the cells are quite homogenous.
KeywordsCopper Sulfide PhotovoltaIc Solar Crystallite Growth Sion Length Current Transport Mechanism
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