Physical Properties of Chemical Spray Deposited Al doped CdO Thin Films

Bhaskar S. Munde

Department of Physics, K. K. M. College, Manwat-431505, INDIA.


The purpose of this work is to study the influence of Al doping (1%. 2% and 3%) on structural and surface morphological properties of the CdO thin films prepared by spray pyrolysis technique. These films were characterized for the structural and morphological properties by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM). As deposited CdO films are polycrystalline with (111) preferential orientation. The information on crystallite size is obtained from the full width-at half- maximum (FWHM) of the diffraction peaks. The optical band gap value decreased from 2.46 to 2.38 eV with increasing the Al content.

Keywords :Thin films; X-ray diffraction; Cadmium oxide; spray pyrolysis; Optical properties.