• Ms. Poonam Soni
• Dr. Anju Singh
• Dr. Anju Singh
• Dr. Preeti Nandkumar

In this study, nanocomposite thin film of cadmium sulphide and zinc sulphide has been prepared by chemical bath deposition method. The ratio of cadmium sulphide and zinc sulphide was different for each deposited layer. The thin film was kept at room temperature overnight after deposition of each layer. The next layer was deposited on the thin film prepared one day earlier. Finally three layers of film are obtained. Cadmium acetate and zinc acetate are mixed in a proper proportion for the preparation of composite thin film. The synthesized films will be characterized by different techniques and properties will be studied. For the Investigation of surface morphology and micro structural features of film, SEM has been used. The elemental compositional analysis of materials has been identified by EDAX (energy dispersive X-ray analysis) also referred as EDX and EDS. Absorbance spectral study provided by UV-visible spectroscopy, which gives a measure of absorbance as a nature of band gap of semiconductor nano material and the value of band gap and particle size. X- ray diffraction will reveal the structural properties of the prepared films. SEM micrograph of the single, double and multilayer films at 50K magnification matches with the standard images. The particles are seen to be spherical and asymmetrical. The particles have seen to be spherical and asymmetrical. XRD have confirmed the polycrystalline growth for various arrangements of single layer, double layer and as-deposited multilayer thin film of CdS and CdZnS. All films found cubic and hexagonal structures. The EDS studies showed the presence of cadmium zinc and sulphur along with some impurities. It can be clearly seen that during the deposition of films, the impurities such as carbon, oxygen, and nitrogen found due to the presence of air. The thicknesses of the films were measured by optical interference method (multiple beam interferometers). The Band gap of thin films has investigated by Tauc’s Plot. In this investigation, band gap for CdS thin film was 2.52 eV, for CdS- (Cd0.8 Zn0.2) S thin film was 2.65 eV and for CdS- (Cd0.8 Zn0.2)S- (Cd0.5 Zn0.5)S thin film was 2.75 eV.

Bandgap, Thin film, Nanotechnology, Nanomaterials, Zinc Sulphide

"PREPARATION AND CHARACTERIZATION OF NANOCOMPOSITE THIN FILMS OF CADMIUM SULPHIDE & ZINC SULPHIDE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 6, page no.h761-h772, June-2023, Available :http://www.jetir.org/papers/JETIR2306800.pdf

"PREPARATION AND CHARACTERIZATION OF NANOCOMPOSITE THIN FILMS OF CADMIUM SULPHIDE & ZINC SULPHIDE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 6, page no. pph761-h772, June-2023, Available at : http://www.jetir.org/papers/JETIR2306800.pdf