Photocatalytic Property and Deep Levels of Nb-doped Anatase TiO2Film Grown by Metalorganic Chemical Vapor Depostion
作者： Takahira Miyagi , Masayuki Kamei , Isao Sakaguchi , Takefumi Mitsuhashi , Atsushi Yamazaki
DOI: 10.1143/JJAP.43.775
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摘要: A Nb-doped anatase TiO2 (Nb: 5 at%) film was grown on a SrTiO3(001) substrate by metalorganic chemical vapor deposition. Deep level transient spectroscopy analysis revealed that this possessed two kinds of deep levels due to the Nb ions, which were found exist at 0.32 eV and 0.67 below bottom conduction band. The photocatalytic activity low compared with undoped film, suggesting acted as recombination centers photoexcited electron-hole pairs.
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Takahira Miyagi, Tomoyuki Ogawa, Masayuki Kamei, Yoshiki Wada, Takefumi Mitsuhashi, Atsushi Yamazaki, Eiji Ohta, Tetsuya Sato, Deep Level Transient Spectroscopy Analysis of an Anatase Epitaxial Film Grown by Metal Organic Chemical Vapor Deposition Japanese Journal of Applied Physics. ,vol. 40, pp. 404- ,(2001) , 10.1143/JJAP.40.L404