Production and characterization of ZnO-Cdo nanomaterials by sol-gel method

With the rapid progress of technology, research and development studies have created new production techniques that will be alternative to each other. Thin films gaining momentum among these emerging techniques have a wide range of applications. In this study, ZnO and CdO thin films were produced by sol-gel method. Four samples in different proportions were prepared to be coated with quartz substrates by sol-gel spin coating method. ZnO thin films were deposited on glass substrates by sol-gel spin coating method. The prepared ions were heat treated at the same temperature and times. The main objective of this study is to analyze AFM, optical and conductivity measurements of samples produced by sol-gel method, which is suitable for thin films, which can produce high purity material, has the advantages of homogeneous materials and powder size below micron. For this purpose, the characteristics of Cadmium (Cd) doped zinc oxide (ZnO) films were investigated. ZnO films are one of the most striking materials of transparent conductive oxides and are highly preferred in optoelectronic technology. The forbidden energy interval value when ZnO was added by Cd could not be increased by adding the concentration of the added Cd. In this study, Cd doped ZnO films were deposited on glass mat by sol-gel rotating coating technique. By changing the parameters of the coating by rotating, the conditions in which the coating is very good were determined. When the appropriate parameter was found, the same parameter was applied for each film. The morphological, structural and optical properties of the films were characterized by Atomic Force Microscopy (AFM) and UV-Visible Spectroscopy, respectively, and the effects of addition on these properties were investigated. It was observed that the surface morphology of Cd doped ZnO films changed with Cd doping. The optical properties of the films were examined and it was determined that they were direct band pass materials. As a result of these investigations, it was determined that the structural, morphological, optical properties of the obtained films varied according to the doping concentration.