A COMPARATIVE STUDY OF PHYSICAL AND OPTICAL PROPERTIES OF CdZnS AND CdNiS NANOCRYSTALLINE FILMS DEPOSITED BY CHEMICAL BATH METHOD

摘要

In this paper, a comparative study of CdZnS and CdNiS nanocrystalline films deposited by chemical bath deposition (CBD) method has been made using X-ray diffraction (XRD), Scanning electron microscope (SEM), UV-Vis spectroscopy and Photoluminescence analysis. Structure of CdZnS and CdNiS nanocrystalline films were observed by XRD technique was found to be hexagonal. CdZnS nanocrystalline films shows smooth and uniform spherical grains, which are well covered to the substrate, whereas CdNiS film shows nanocrystalline particles spread over the substrate. The crystalline size for CdZnS and CdNiS nanocrystalline films were found to be 17nm and 21nm, respectively. CdZnS films show high absorption than the deposited CdNiS films in the UV range. Photoluminescence spectrum of CdZnS shows more intense green emission than the deposited CdNiS films.