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Fabrication of dye sensitized solar cell using Cr doped CuZnSe type chalcopyrite thin film

Chalcopyrites are a versatile class of semiconductors known for their potential in photovoltaic applications. Considering the well established CuInSe2 as a prototype system, a new compound of the chalcopyrite type, Cu1–xZn1–ySe2–δ, by replacing In with Zn, has been prepared (both undoped and 2% Cr doped) by the metallurgical method. Thin films have been deposited by the thermal evaporation technique using the stabilized polycrystalline compounds as charge. Structural, compositional, morphological, and optical properties of the films are analyzed and reported. Use of these films as electrodes in dye sensitized solar cell (DSSC) is demonstrated.