STM studies of defect production on the TiO2(110)-(1 x 1) and TiO2(110)-(1 x 2) surfaces induced by UV irradiation

被引：101

作者：

Mezhenny, S

Maksymovych, P

Thompson, TL

Diwald, O

Stahl, D

Walck, SD

Yates, JT ^{[1
]}

机构：

[1] Univ Pittsburgh, Ctr Surface Sci, Dept Chem, Pittsburgh, PA 15260 USA

[2] PPG Glass Technol Ctr, Harmarville, PA 15220 USA

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 369卷 / 1-2期

基金：

奥地利科学基金会;

关键词：

D O I：

10.1016/S0009-2614(02)01997-8

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 effect of UV radiation (1.6 eV less than or equal to hv less than or equal to 5.6 eV) on the rutile surface was studied in ultrahigh vacuum (UHV) using the scanning tunneling microscope (STM). It was found that the TiO2(110)-(1 x 1) surface remains unaffected by UV irradiation. However, line defects along the (0 0 1) direction were formed on the TiO2 (I I 0)-(l x 2) surface, the cross-section for the defect formation being 10(-23.5+/-0.2) cm(2) photon(-1) (hv greater than or equal to 3.0 eV). The defects are attributed to collective oxygen removal by UV light. It was also found that the defects were stable in UHV (up to 48 h), and their formation was not temperature dependent. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：152 / 158

页数：7

共 26 条

[1] Atomic structures of TiO2(110) surface between p(1 x 1) and p(1 x 2) studied by scanning tunneling microscopy [J].