The Effect of Annealing on The Structural and Optical Properties of CdO Thin Films by Chemical Bath Deposition Technique

Abstract

In this work CdO films were prepared by chemical bath deposition technique(CBD) where the cadmium nitrat salt was used as a source of cadmium ions(Cd+2) , the effect of the annealing at (373,473.573,673) K for 60 min on the structural and optical properties is described. The XRD studies revealed the annealing temperature chosen is 673K which conversion of cadmium hydroxide film to cadmium oxide film we get to cubic structure with preferential orientation along the (111) crystal plane. The optical properties study by transmission spectra where found the CdO films have highly transmittance in visible region of spectrum and reach to more than 72 %. The CdO films have wide band gap of 2. 38 to 2.55 eV.