Resonant Auger spectra of TiO2 at Ti 2p and O 1s absorption edges

被引：16

作者：

Ruus, R

Saar, A

Aarik, J

Aidla, A

Uustare, T

Kikas, A

机构：

[1] Estonian Acad Sci, Inst Phys, EE-2400 Tartu, Estonia

[2] Tartu Univ, Inst Mat Sci, EE-2400 Tartu, Estonia

来源：

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA | 1998年 / 93卷 / 1-3期

关键词：

resonant photoemission; TiO2; thin films;

D O I：

10.1016/S0368-2048(98)00174-1

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Resonant Auger measurements of TiO2 (anatase) have been performed at the Ti 2p and O 1s X-ray-absorption edges. The resonant photoelectron spectra excited at the Ti 2p absorption maxima show a strong resonance enhancement of the valence-band photoemission intensity indicating the strong hybridization of the Ti 3d-level with the anion valence-band. The degree of localization of the excited 3d electron in intermediate and in final Auger ionic configurations, and its influence on the decay spectra is discussed. In contrast, the resonant photoelectron spectra excited at the O 1s absorption maxima do not show resonance enhancement of the valence-band which indicates that the absorption spectrum is formed by the delocalized states. (C) 1998 Elsevier Science B.V. All rights reserved.

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页码：193 / 199

页数：7

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