Abstract
Thin film of copper sulfide (CuS) with three molar concentrate of Thiouria (NH2)2CS (TU) (0.03,0.05 and 0.08) M and Copper Chloride CuCl2.2H2O with molar ratio (0.01) M have been prepared by Chemical Bath Deposition Technique on glass substrates at (75°C), for one hour. As deposition and annealed films were studied, the results of X-ray diffraction showed that the films were polycrystalline with Hexagonal structure. The optical properties of CuS thin films recording by the transmittance and absorbance spectrum for wave length range (300-1100) nm, the results showed that the transmittance increases with increasing molar concentration of Sulfide source (TU) for as deposited and annealed films. It is noticed that the electronic transitions is directly allowed transition and the values of energy gap ranging between (1.3 – 2.2) eV corresponding to increasing of molar concentration of Thiouria. The purpose of the research is to study the compositional, optical and electrical properties of the prepared films and study the effect of sulfur exporters, On the structural and optical properties.
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