Chalcopyrite Compound Semiconductors

The chalcopyrite compound CuInS2 and alloys of the CuInS2-CuGaS2 system have been used as absorber layers for thin lm solar cells in this work. This chapter starts with a brief description of the material properties of Cu-chalcopyrites. The basic principles of a photovoltaic device are then introduced and the current-voltage characteristics are discussed. Special emphasis is laid on the recombination in hetero junction solar cells based on Cu-chalcopyrites and their in uence on the attainable open circuit voltage under illumination.

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