Time-resolved x-ray excited optical luminescence from SnO2 nanoribbons:: Direct evidence for the origin of the blue luminescence and the role of surface states

被引：98

作者：

Zhou, X. T.

Heigl, F.

Murphy, M. W.

Sham, T. K. ^{[1
]}

Regier, T.

Coulthard, I.

Blyth, R. I. R.

机构：

[1] Univ Western Ontario, Dept Chem, London, ON N6A 5B7, Canada

[2] Univ Saskatchewan, Canadian Light Source, Saskatoon, SK S7N 0X4, Canada

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 21期

基金：

加拿大健康研究院; 加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

D O I：

10.1063/1.2387476

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Time-resolved x-ray excited optical luminescence (XEOL) and x-ray absorption near edge structures have been employed to study the origin of the multicolor luminescence from SnO2 nanoribbons. The authors find that the yellow-green luminescence has a long lifetime while the blue luminescence a short one. The luminescence is attributed to the radiative decay of trapped electrons in oxygen vacancies just below the conduction band and electrons in the conduction band to intrinsic surface states in the band gap. (c) 2006 American Institute of Physics.

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页数：3

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