Growth of CdS thin films by chemical bath deposition technique

Abstract

The structural, morphological and optical properties of CBD deposited CdS thin films have been studied by varying the processing parameters and the Cd/S ratio of the starting precursors in order to better understand the growth conditions. The films were characterized by Xray diffraction, SEM, Raman, and photoluminescence spectroscopy. XRD patterns show that asdeposited CdS films were polycrystalline. The grain size are increasing with increasing the Cd/S ratio and/or the deposition time. The fact that the symmetry-dependent Raman bands of the CdS thin films under investigation did not appear indicates the poor preferential orientation of asdeposited CdS crystallites, which is in accordance with the measured XRD pattern.