Injection time in the metaloxide-molecule interface calculated within the tight-binding model

被引：48

作者：

Petersson, Å

Ratner, M

Karlsson, HO

机构：

[1] Univ Uppsala, Inst Quantum Chem, S-75120 Uppsala, Sweden

[2] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

[3] Northwestern Univ, Mat Res Ctr, Evanston, IL 60208 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2000年 / 104卷 / 35期

关键词：

D O I：

10.1021/jp001085t

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：

The injection time tau of the electron transfer from an excited electronic state of a dye molecule to a semiconducting surface is studied, An analytical expression for the injection time as a function of excitation energy is derived. The semiconductor is described as a one-dimensional chain in the tight-binding approximation, and the dye molecule is included via the coupling to the semiconductor. For a TiO2 semiconductor the injection time is estimated to be approximately 5 fs. The results support and characterize recent experimental studies.

引用

页码：8498 / 8502

页数：5

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