FEMTOSECOND STUDIES OF INTERFACIAL ELECTRON-HOLE RECOMBINATION IN AQUEOUS CDS COLLOIDS

被引：26

作者：

ZHANG, JZ

ONEIL, RH

ROBERTI, TW

机构：

[1] Department of Chemistry and Biochemistry, University of California, Santa Cruz

来源：

APPLIED PHYSICS LETTERS | 1994年 / 64卷 / 15期

关键词：

D O I：

10.1063/1.111986

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the measurements of the electron-hole recombination rate in aqueous CdS colloids on the femtosecond time scale. A fast 2-ps decay and a slower 45-ps decay have been observed, and the decay dynamics are found to be very sensitive to the excitation laser intensity. Geminate electron-hole recombination, responsible for the 45-ps decay, dominates the decay process at low excitation intensities, while nongeminate recombination, accounting for the 2-ps decay, becomes more important at high excitation intensities.

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页码：1989 / 1991

页数：3

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