Structure, surface morphology, composition and optical properties of dip coated CdS films

Abstract

Cadmium sulphide is a promising semiconductor material. In the photovoltaic solar cells it can be used as a window material. In this paper the preparation of CdS film by chemical bath deposition and its solid state properties by taking XRD, SEM, XPS and optical properties has been reported. The XRD and SEM analyses of as deposited and annealed at 400°C clearly indicate the polycrystalline hexagonal phase of the film with (002) orientation. The surfaces are uniform. The XPS measurements indicate the ratio of Cd/S in both the films to be equal to 1-1 at the surface and bulk. It is observed that the thickness of the film depends upon the deposition duration and 5 min deposited films are good for device applications.