The simple sol-gel technique was utilized to prepare pure nanocomposite TiO2 and Ag\TiO2. The structure, surface as well as optic features of the pure nanocomposite TiO2 and Ag\TiO2 were verified by adding different concentrations of Ag to TiO2 at (0, 2, 4, and 6 mol%), respectively and annealed at temperatures of 450oC for 2h. The XRD diffraction patterns show anatase stage within pure TiO2, while in state of Ag\TiO2 nanocomposite there is a stage for Ag cubic corresponding to high concentrations of Ag content. The optical properties reveal the absorption band induced by surface plasmon resonance (SPR) in the visible area, which is the hallmark of Ag Nanoparticles. The FTIR analysis confirms the formation functional groups due to the interaction of TiO2 with Ag species. The surface morphology of pure TiO2 and Ag\TiO2 nanocomposite powder was distinguished through FESEM (field emitting scan electron microscopy). In state of higher Ag content, the Ag\TiO2 nanocomposite is formed with less aggregation and smaller size compared with pure TiO2.
In this paper, the ZnO thin films have been prepared by spray research thickness (300nm) on a glass substrates and studying its optical and electric properties.The results of (X-Ray ) diffraction showed that the films have a polycrystalline structure , The Absorption and The transmission as a function of photon energy for ZnO films had been studied. The Investigation of energy gap of the direct allowed transitions of ZnO film showed a value of (3.14 eV). The optical Absorption coefficients have been studied as a function of Photon Energy See beck measurements revealed that ZnO thin films are n-type.
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