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Conferences > EQEC > 2011 > EG > EG_P7
  • CLEO/Europe and EQEC 2011 Conference Digest
  • OSA Technical Digest (CD) (Optica Publishing Group, 2011),
  • paper EG_P7

Trapping Dynamics of electron in TiO2 investigated by femtosecond transient absorption spectroscopy

Shota Tsuchida, Kazuhiro Ema, Hiroshi Sakama, and Hideyuki Kunugita

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Abstract

Anatase TiO2 is well known to exhibit high photocatalytic activity. It is believed that photo-excited carriers create activated species by reacting with water and oxygen at the crystal surface, and such activated species decompose organic pollutants. However, the relaxation and diffuse process of the photo-excited carriers is not understood sufficiently. In this study, we investigated such dynamics of photo-excited carriers by transient absorption spectroscopy in anatase TiO2 epitaxial thin film. Moreover, the transient absorption signal and photoluminescence (PL) results are compared for the first time.

© 2011 IEEE

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