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    The role of TiO2 addition in ZnO nanocrystalline thin films: Variation of photoelectrochemical responsivity

    , Article Electrochimica Acta ; Volume 56, Issue 18 , July , 2011 , Pages 6284-6292 ; 00134686 (ISSN) Naseri, N ; Yousefi, M ; Moshfegh, A. Z ; Sharif University of Technology
    2011
    Abstract
    In this study, the effects of TiO2 addition on the physical and photoelectrochemical properties of ZnO thin films have been investigated. The (TiO2)x-(ZnO)1-x nanocomposite thin films were dip-coated on both glass and indium tin oxide (ITO)-coated conducting glass substrates with various values of x, specifically 0, 0.05, 0.1, 0.25 and 0.5. Optical properties of the samples were studied by UV-vis spectrophotometry in the range of 300-1100 nm. The optical spectra of the nanocomposite thin films showed high transparency in the visible region. The optical bandgap energy of the (TiO2)x-(ZnO)1-x films increased slightly with increasing values of x. The crystalline structure of the nanocomposite...