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Abstract

"Asimple technique has been utilized to grow cadmium sulfide (CdS) nano size. The obtained nanoparticles powder was formed as thin films by chemical drop method. The prepared samples were annealed at 200 0C then illustrated by XRD, UV-VIS spectrum, AFM images and some dielectric properties. The results indicated that high purity of Nano sized CdS was successfully obtained with hexagonal crystalline structure with particles size estimated to be 35nm using x-ray line broadening. The optical band gap of prepared and annealing thin films varied with the range (3.35–3.73) eV. The AFM results show homogenized grains after annealing at 200 ºC with surface roughness of 3.83 nm. Best values of dielectric were obtained for annealing samples. "