STRUCTURAL AND OPTICAL PROPERTIES OF CdO THIN FILMS PREPARED BY CHEMICAL METHOD

Abstract

CdO thin films of different thicknesses were prepared by a simple chemical technique called
Successive Ionic Layer Adsorption & Reaction (SILAR) technique onto well cleaned substrates and the
thicknesses of the deposited films were determined by gravimetric technique. Uniform and adherent CdO thin
films are prepared and annealed at different temperatures of 100C, 200C and 300C respectively. The films
are investigated with X-ray diffraction, EDAX and optical spectroscopy. The structural characterization was
carried out by X-ray diffraction which confirms the polycrystalline nature of the films with a cubic structure.
EDAX analysis conforms the presence of the constituents Cd and O and the weight percentage is presented .
From the transmittance spectra the type of transition, band gaps of the films, refractive index of the films were
estimated. From the results of the structural and optical analysis, CdO has been identified as an alternate
window /n-type conductor for fabricating solar cells.