PROPERTIES OF Cd and Zn PARTIAL ELECTROLYTE TREATED CIGS SOLAR CELLS
نویسنده
چکیده
We study the influence of Cd partial baths on the photovoltaic properties of CuInGaSe2 (CIGS) and CuInGaSSe2 (CIGSS) thin film absorbers. We find that efficient solar cells can be fabricated by this treatment, and we compare their properties with those containing CdS window layers grown by chemical bath deposition. The results suggest that Cd plays a dominant role in establishing efficient photovoltaic junctions in CuInSe2 alloys. Micron scale photoluminescence scans show non-uniformity along the length probed. Cd treatment quenches one of the luminescence transitions, which indicates a change in shallow acceptor level density. We present a model that helps to explain the evolution of photovoltaic action.
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