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Sekiya, T., Ichimura, K., Igarashi, M. and Kurita, S. (2000) Absorption Spectra of Anatase TiO2 Single Crystals Heat-Treated under Oxygen Atmosphere. Journal of Physics and Chemistry of Solids, 61, 1237-1242.

has been cited by the following article:

  • TITLE: Low Pressure Chemical Vapor Deposition of TiO2 Layer in Hydrogen-Ambient

    AUTHORS: Satoshi Yamauchi, Kazuhiro Ishibashi, Sakura Hatakeyama

    KEYWORDS: LPCVD, TTIP+H2, Anatase-TiO2, Low Resistive TiO2

    JOURNAL NAME: Journal of Crystallization Process and Technology, Vol.4 No.4, October 6, 2014

    ABSTRACT: Low pressure chemical vapor deposition (LPCVD) of anatase TiO2as a reduction gas was demonstrated at pres- sure of 3 mtorr in comparison to that using TTIP and O2 with study for the property of the layers. Dissociation energy of TTIP in H2 was higher than that in O2 but resistivity of the layer deposited in H2 was significantly decreased to 0.2 Ω cm in contrast to the high resistivity beyond 100 Ω cm of the layer deposited in O2. UV-Vis optical transmission spectra showed absorption around 2.2 eV was increased in the layer deposited by TTIP + H2 in addition to decrease of forbidden energy gap due to increase of Urbach tail. Resistivity at low temperature below 100 K indicating the layer deposited in H2-ambient was degenerated by the high electron density but the resistivity was decreased with temperature above 100 K with the activation energy about 100 meV. A possible electronic conduction model based on kernel, grain boundary and surface trap to clarify the temperature dependent resistivity suggesting resistivity of the layer was limited by depletion region in the grain-boundary extended from the surface and the kernel with significantly low resistivity in 10-3 Ω cm order was formed in the layer.