Abstract :
We have prepared ZnO. CdO. thin films by spray pyrolysis. Mixed thin film oxides with different compositions of x 1yx
cadmium and zinc were deposited on glass substrates and exposed to different annealing treatments at a fixed temperature.
The effects due to post-thermal annealing on the structural, optical and electrical properties of the variable composition thin
films have been studied depending upon the x value. The crystalline structure was studied by X-ray diffraction XRD.. We
found the presence of CdO XRD patterns for low Zn concentrations, and a mixing of CdO cubic.and ZnO hexagonal.
phases for low Cd concentrations. In all cases, the crystallite sizes increased with the annealing. In addition, the band-gap
and the resistivity vary between those found for pure CdO and ZnO. The changes of the latter parameters with the
post-thermal annealing are studied also as a function of the x value. q2000 Elsevier Science B.V. All rights reserved.
