Synthesis of anatase-type TiO2 films by reactive laser ablation of a metallic Ti target in ambient O2 gas |
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Authors: | H Ito N Takada K Sasaki |
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Institution: | (1) Department of Electronics, Nagoya University, Nagoya, 464-8603, Japan |
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Abstract: | TiO2 films having anatase-type crystal structures were synthesized by reactive laser ablation of a metallic Ti target in ambient O2 gas. The anatase-type TiO2 was obtained at O2 pressures below 0.2 Torr and at substrate temperatures above 150 °C. The films had the (101) orientation at substrate temperatures of 200–250 °C while, at substrate temperatures of 400–450 °C, the orientation of the films was (004). Rutile-type crystal was mixed in at substrate temperatures higher than 450 °C. The synthesis characteristics were compared with the fluxes of Ti, Ti+, and TiO toward the substrate, which were evaluated by laser-induced fluorescence imaging spectroscopy. PACS 81.15.Fg; 61.10.-i; 52.70.Kz |
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