Abdul Hadi K. Judran; Farah T.M. Noori; Nawres D. Hamza
Abstract
Indium Oxide (In2O3) and Zinc Oxide (ZnO) nanoparticles weremixed carefully with gold nanoparticles, which were synthesis, by turkevichmethod. By using the method of spray pyrolysis ...
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Indium Oxide (In2O3) and Zinc Oxide (ZnO) nanoparticles weremixed carefully with gold nanoparticles, which were synthesis, by turkevichmethod. By using the method of spray pyrolysis different concentrations(5:5:0 ml, 5:4:1 ml, 5:3:2 ml, 5:2:3 ml, 5:1:4 ml and 5:0:5 ml) from thesechemical compounds were used to preformed nanocomposite thin films ofthickness of (250-300) nm. The structural properties were studied for allnanocomposite thin film samples with different concentrations. The existenceof Miller indices conforms to (211), (222), (400), (333), (440) and (622) majorlattice planes of the cubic spinel phase of In2O3 at 2θ =20.17, 33, 44.66, 50.95,59.02, 72.48 and 73.12. While secondary lattice planes of (100) and (002) ofZnO at 2θ = 31.5582 and 34.1617, also lattice planes of (111) and (200) ofAu were found at 2θ = 38.5799 and 45.6016. The work also extended to studythe optical properties, which included the transmission spectrum, absorptionspectrum, absorption coefficient, attenuation coefficient and estimation ofoptical energy gap for all samples. The results of optical properties wereclearly demonstrated that the increasing of gold concentration is decreasingthe transmission, and decreasing the optical band gap from 3.10 to 3.05 eV,but increasing the absorption coefficient and attenuation coefficient. FinallyThe real and imaginary part of dielectric constant of (In2O3:ZnO:Au)nanocomposite thin film with different concentrations decrease with