研究目的
To study the structural, surface morphology, and optical properties of Zinc sulphide (ZnS) thin films prepared by chemical bath deposition method.
研究成果
The ZnS thin films prepared by chemical bath deposition technique were well crystallized with a cubic structure. The films showed excellent transmission in the visible region with an optical band gap of 3.45 eV. The dielectric properties were found to vary with frequency and temperature.
研究不足
The study focuses on the structural, morphological, and optical properties of ZnS thin films prepared by a specific method, which may limit the generalizability of the findings to films prepared by other methods.
1：Experimental Design and Method Selection:
The ZnS thin films were prepared using the chemical bath deposition method, involving the dissolution of zinc acetate and thiourea in double distilled water at a deposition temperature of 60°C. Ammonia solution was added to achieve a pH of
2：Sample Selection and Data Sources:
The films were characterized using XRD for structure and crystallite size, SEM for particle size and morphology, and UV-Visible-NIR absorbance spectrum for optical studies.
3：List of Experimental Equipment and Materials:
Powder X-ray diffractometer (Schimadzu model: XRD 6000), scanning electron microscopy (JEOL, JSM-67001), VARIAN CARY MODEL 5000 spectrophotometer, and HIOKI 3532-50 LCR HITESTER for dielectric properties.
4：Experimental Procedures and Operational Workflow:
The films were deposited by keeping the substrates vertically inside the chemical bath for five minutes, rinsed in double distilled water, and dried in air atmosphere.
5：Data Analysis Methods:
The crystallite size was determined using Debye Scherrer’s formula, and the optical absorption coefficient was calculated from transmittance.
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