Article ID Journal Published Year Pages File Type
1530195 Materials Science and Engineering: B 2010 4 Pages PDF
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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Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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