Characterization of sputtered triple layer photoactive coating with a glass-like appearance
| Autor: | M. Suzuki, Y. Shibayama, Hisashi Ohsaki, N. Kanai, Y. Fukunaga, Takayuki Watanabe, Kazuhito Hashimoto |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Materials science
business.industry Metals and Alloys Surfaces and Interfaces engineering.material Spectral line Surfaces Coatings and Films Electronic Optical and Magnetic Materials Overlayer Reflection (mathematics) Optics Coating Chemical engineering Materials Chemistry engineering Photocatalysis Rectangular potential barrier business Layer (electronics) Visible spectrum |
| Zdroj: | Thin Solid Films. 516:4558-4562 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/j.tsf.2007.05.087 |
| Popis: | Photocatalytic activity of sputtered TiO 2 single layer was investigated. From the results on the optical constants analyses and dark- and photo-conductivity measurements, it is revealed that the photocatalytic activities of TiO 2 films depend on the defect density of the TiO 2 films; the atomic defects act as recombination sites for photo-generated carriers diffusing to the TiO 2 surface. A three-layer system with a layer construction of SnO 2 /TiO 2 /Si 3 N 4 /Glass was designed for realizing the glass-like appearance, namely almost the same transmission and reflection spectra in visible wavelength region as those of glass, and its photocatalytic activity was investigated. The experimental results indicate that the interface between TiO 2 and SnO 2 acts as a potential barrier for the carriers photo-generated in the TiO 2 and the photo-generated species pass through the SnO 2 overlayer depending on the SnO 2 film characteristics. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect