Studying the Effect of Metallic Precursor Concentration on the Structural, Optical, and Morphological Properties of Zinc Sulfide Thin Films in Photovoltaic Cell Applications

Thin films of zinc sulfide (ZnS) with different concentrations acetate have been made by chemical bath deposition technique in acidic medium (pH = 5) on glass substrate using and sodium as sources Zn+2 ion S?2 ion, respectively, ethylenediaminetetraacetate complexing agents sulfuric acid to adjust pH value at a constant temperature 85°C, the time 90 minutes was used. The effect concentration metallic precursor structural, morphological, optical properties deposited thin investigated this study. XRD result confirmed mixed phases crystalline amorphous structure dominating other phases, which is witnessed larger crystallite size than phases. It reveals that had hexagonal preferred orientation along (111) plane, lower higher concentration, it showed film has an nature. crystallinity all significantly enlarged increasing concentration. SEM micrographs high-pitched edged irregular-shaped grains covering pinholes bangs. UV-VIS spectrometer specified decrease bandgap between 3.5 eV 2.6 solution increased from 0.1 0.2 M. high absorption UV radiation. main finding paper significant role optical, microstructural cobalt films, are most suitable for photovoltaic applications.