Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1530195 | Materials Science and Engineering: B | 2010 | 4 Pages |
Abstract
The photo-induced hydrophilicity of sodium niobate (NaNbO3) films prepared by the sol-gel method was investigated. Although the films annealed at by 700 and 900 °C exhibited a more heterogeneous microstructure (average grain size: 30-40 nm, 50-80 nm, respectively) than that for films annealed at 500 °C (15-20 nm), the crystallinity and the band gaps of the films were all approximately the same. The films exhibited photo-induced hydrophilicity under UV-B light irradiation. The photo-induced hydrophilic response of the film annealed at 500 °C was higher than those of the films annealed at 700 and 900 °C. It is proposed that the photo-induced hydrophilicity of NaNbO3 films is affected by the surface microstructure.
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Authors
Ken-ichi Katsumata, Christopher E.J. Cordonier, Tetsuya Shichi, Akira Fujishima,