Ultrafast electron transfer between molecule adsorbate and antimony doped tin oxide (ATO) nanoparticles

被引：31
|
作者：
Guo, JC [1 ]
She, CX [1 ]
Lian, TQ [1 ]
机构：
[1] Emory Univ, Dept Chem, Atlanta, GA 30322 USA
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2005年 / 109卷 / 15期
关键词：
D O I：
10.1021/jp044579p
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Ultrafast transient IR spectroscopy has been used to examine the effect of doping on interfacial electron transfer (ET) dynamics in Re(dpbpy)(CO)(3)Cl (dpbpy = 4,4'-(CH2PO(OH)(2))2-2,2'-bipyridine) (ReC1PO(3)) sensitized ATO (Sb:SnO2) nanocrystalline thin films. In films consisting of particles with 0%, 2% and 10% Sb dopant, the rates of electron injection from the adsorbate excited state to ATO were independent of and the rates of the recombination increased with the doping level. The observed similar forward electron injection rates were attributed to negligible changes of available accepting states in the conduction band at the doping levels studied. The dependence of the recombination rate on conduction band electron density and a possible mechanism for the recombination process were discussed.
引用
收藏
页码：7095 / 7102
页数：8
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