Ultrafast Charge Transfer at TiO2/SCN- (aq) Interfaces Investigated by Femtosecond Transient Reflecting Grating Method

Tomohiro Morishita, Akihide Hibara, Tsuguo Sawada, Isao Tsuyumoto

研究成果: Article査読

29 被引用数 (Scopus)

抄録

We applied a femtosecond transient reflecting grating (TRG) method to solid/liquid interfaces to successfully observe the photoinduced ultrafast relaxation dynamics at TiO2(001)/KSCN (aq) interfaces. We found, for the first time, an ultrafast relaxation component (110-690 fs). The component intensity clearly increases with increasing concentration of KSCN, and it is strongly dependent on the number of photoexcited carriers. We concluded that this component is due to the interaction between photoinduced nonequilibrium holes and adsorbed SCN- ions and that ultrafast charge transfer occurs by way of this interaction. These results suggest a new ultrafast charge transfer process involving nonequilibrium carriers.

本文言語English
ページ(範囲)5984-5987
ページ数4
ジャーナルJournal of Physical Chemistry B
103
29
DOI
出版ステータスPublished - 1999 7月 22
外部発表はい

ASJC Scopus subject areas

  • 物理化学および理論化学
  • 表面、皮膜および薄膜
  • 材料化学

フィンガープリント

「Ultrafast Charge Transfer at TiO2/SCN- (aq) Interfaces Investigated by Femtosecond Transient Reflecting Grating Method」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル