Effect of Deposition Time on ZnS Thin Films Prepared by Electrodeposition Method

Zinc sulfide (ZnS) thin films were deposited on indium tin oxide (ITO) glass by the cathodic electrodeposition method. The phase compositions,morphologies and optical properties of the as-deposited thin films were characterized by X-ray diffraction (XRD),atomic force microscope (AFM) and ultraviolet-visible-infrared spectrophotometer(UV-VIS-NIR). The effect of deposition time on the structure and optical properties of ZnS thin films was investigated. The results show that when the deposition time is 6 min,a dense and homogenous surface morphology ZnS thin films can be obtained and the transmittance of the thin films is about 50%-60% in the range of 500-1000 nm. As the deposition time increasing,the crystallinity and morphologies of the ZnS thin films are improved,but when the deposition time is up to 8 min or above,it will give disadvantages to the thin films.