2001年1月
Time-resolved infrared absorption spectroscopy of photogenerated electrons in platinized TiO2 particles
CHEMICAL PHYSICS LETTERS
- ,
- ,
- 巻
- 333
- 号
- 3-4
- 開始ページ
- 271
- 終了ページ
- 277
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/S0009-2614(00)01374-9
- 出版者・発行元
- ELSEVIER SCIENCE BV
Kinetics of photogenerated electrons in platinized TiO2 (P-25) particles were observed by time-resolved infrared (IR) absorption spectroscopy with AC-coupled detection of cw probe light. The sample irradiated by UV pulse (355 nm and 10 ns) gave transient absorption which monotonously increased in intensity with decreasing wavenumber from 3000 to 900 cm(-1). Photogenerated electrons trapped in shallow mid-gap states were proposed to originate the transient absorption. The decay kinetics of the trapped electrons were fitted to a multi-exponential formula with six lifetimes ranging from 1 x 10(-7) to 3 x 10(-1) s. (C) 2001 Elsevier Science B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/S0009-2614(00)01374-9
- ISSN : 0009-2614
- Web of Science ID : WOS:000166468800011