Influence of Bath Temperature on Structural, Optical and Electrical Properties of Cadmium Sulfi de Thin Films Prepared by Chemical Bath Deposition

Abstract

Abstract. The effect of bath temperature (60-90 °C) on structural, optical and electrical properties of CdS thin films deposited by chemical bath deposition (CBD) at a constant precursor concentration and deposition time was studied. From the XRD analysis, it was found that the structure of CdS thin fi lms varied with temperature. At lower temperature hexagonal structure was dominated while at high temperature, the cubic structure was prominent. The band gap of the as-prepared CdS thin fi lms was calculated from the UV-Vis spectroscopic data, and it was found to be decreased with the increase of temperature. The resistivity of the CdS thin fi lms also decreased with the increase in temperature.

Keywords

• cadmium sulfi de
• cbd
• temperature effect
• structural change
• growth mechanism