標題: Theoretical treatments of ultrafast electron transfer from adsorbed dye molecule to semiconductor nanocrystalline surface
作者: Liang, Kuo Kan
Lin, Chih-Kai
Chang, Huan-Cheng
Hayashi, Michitoshi
Lin, Sheng Hsien
應用化學系
Department of Applied Chemistry
公開日期: 21-十月-2006
摘要: In studying ultrafast electron transfer from a dye molecule to a nanosized semiconductor particle, pump-probe experiments are commonly used. In this system the electron transfer (ET) rate is faster than vibrational relaxation so that the ET rate should be described by a single-level rate constant and the probing signal (often in the form of time-resolved spectra) contains the contribution from the dynamics of both population and coherence (i.e., wave packet). In this paper, we shall present the theoretical treatments for femtosecond time-resolved pump-probe experiment and the dynamics of population and coherence by the density matrix method, and the calculation of single-level ET rate constant involved in a pump-probe experiment. As an application, we show the theoretical results using parameters extracted from experiments on a specific dye/semiconductor system. (c) 2006 American Institute of Physics.
URI: http://dx.doi.org/10.1063/1.2359445
http://hdl.handle.net/11536/11662
ISSN: 0021-9606
DOI: 10.1063/1.2359445
期刊: JOURNAL OF CHEMICAL PHYSICS
Volume: 125
Issue: 15
結束頁: 
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