The effect of Cu dopant on structural and optical properties of spray deposited CdS films

CdS and copper doped Cd1-xSCux thin films have been prepared by the spray pyrolysis method. The optical band gaps of pure and doped CdS were found to be varied from 2.34 to 2.45 eV with increase x from 0 to 0.1. The X-ray diffraction (XRD) analysis revealed that the f ilms were polycrystalline and exhibited two phases cubic and hexagonal structure with increasing the hexagonal phase with increasing Cu ratio.