High rate deposition of photocatalytic TiO2 films by dc magnetron sputtering using a TiO2−x target
Photocatalytic TiO2 films were deposited on glass substrates by dc magnetron sputtering using a slightly reduced TiO2−x target (2−x=1.986; conductivity, 3.7 S cm−1; density, 4.21 g/cm3). The variation in the deposition rate as a function of the O2 flow ratio did not show a hysteresis curve at the “t...
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Veröffentlicht in: | Journal of vacuum science & technology. A, Vacuum, surfaces, and films Vacuum, surfaces, and films, 2008-07, Vol.26 (4), p.903-907 |
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Hauptverfasser: | , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | Photocatalytic TiO2 films were deposited on glass substrates by dc magnetron sputtering using a slightly reduced TiO2−x target (2−x=1.986; conductivity, 3.7 S cm−1; density, 4.21 g/cm3). The variation in the deposition rate as a function of the O2 flow ratio did not show a hysteresis curve at the “transition region” as seen in the case of a Ti metal target. The deposition rate using the TiO2−x target in 100% Ar gas was approximately seven times higher than that using the Ti metal target in an “oxide mode.” The films postannealed in air at temperatures ≥200 °C showed excellent photodecomposition characteristics of acetaldehyde (CH3CHO) as well as photoinduced hydrophilicity. |
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ISSN: | 0734-2101 1520-8559 |
DOI: | 10.1116/1.2870226 |