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Morphological and optical properties of MgO1-xZnSx thin films

(MgO) films doped with (ZnS) were prepared using a spray pyrolysis technique. Thin films were deposited on glass substrates at (350°C) with different concentrations (0,2,4,6,8) % of ZnS to study the surface morphology and optical properties. The (AFM) images indicated that increasing the (ZnS) concentrations leads to a decrease in the surface roughness rate. The optical measurements showed a decrease in the transmittance and reflectivity spectrum of all the prepared films, with an increase in (ZnS) concentrations and an increase in the absorption coefficient, refractive index, and extinction coefficient. The values of the real part of the dielectric constant were higher compared to the imaginary part for all the prepared films. Also, the optical energy gap decreased with the increase of (ZnS) concentrations within the range of (2.771-2.549) eV.