Band gap narrowing of titanium dioxide by sulfur doping

T. Umebayashi; T. Yamaki; H. Itoh; K. Asai

doi:10.1063/1.1493647

Band gap narrowing of titanium dioxide by sulfur doping

T. Umebayashi, T. Yamaki, H. Itoh, K. Asai

研究成果: Article › 査読

1418 被引用数 (Scopus)

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Titanium dioxide (TiO₂) doped with sulfur (S) was synthesized by oxidation annealing of titanium disulfide (TiS₂). According to the x-ray diffraction patterns, TiS₂ turned into anatase TiO₂ when annealed at 600°C. The residual S atoms occupied O-atom sites in TiO₂ to form TiS bonds. The S doping caused the absorption edge of TiO₂ to be shifted into the lower-energy region. Based on the theoretical analyses using ab initio band calculations, mixing of the S3p states with the valence band was found to contribute to the band gap narrowing.

本文言語	English
ページ（範囲）	454-456
ページ数	3
ジャーナル	Applied Physics Letters
巻	81
号	3
DOI	https://doi.org/10.1063/1.1493647
出版ステータス	Published - 2002 7月 15
外部発表	はい

ASJC Scopus subject areas

物理学および天文学（その他）

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10.1063/1.1493647

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abstract = "Titanium dioxide (TiO2) doped with sulfur (S) was synthesized by oxidation annealing of titanium disulfide (TiS2). According to the x-ray diffraction patterns, TiS2 turned into anatase TiO2 when annealed at 600°C. The residual S atoms occupied O-atom sites in TiO2 to form TiS bonds. The S doping caused the absorption edge of TiO2 to be shifted into the lower-energy region. Based on the theoretical analyses using ab initio band calculations, mixing of the S3p states with the valence band was found to contribute to the band gap narrowing.",

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N2 - Titanium dioxide (TiO2) doped with sulfur (S) was synthesized by oxidation annealing of titanium disulfide (TiS2). According to the x-ray diffraction patterns, TiS2 turned into anatase TiO2 when annealed at 600°C. The residual S atoms occupied O-atom sites in TiO2 to form TiS bonds. The S doping caused the absorption edge of TiO2 to be shifted into the lower-energy region. Based on the theoretical analyses using ab initio band calculations, mixing of the S3p states with the valence band was found to contribute to the band gap narrowing.

AB - Titanium dioxide (TiO2) doped with sulfur (S) was synthesized by oxidation annealing of titanium disulfide (TiS2). According to the x-ray diffraction patterns, TiS2 turned into anatase TiO2 when annealed at 600°C. The residual S atoms occupied O-atom sites in TiO2 to form TiS bonds. The S doping caused the absorption edge of TiO2 to be shifted into the lower-energy region. Based on the theoretical analyses using ab initio band calculations, mixing of the S3p states with the valence band was found to contribute to the band gap narrowing.

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Band gap narrowing of titanium dioxide by sulfur doping

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