UV excitation properties of Eu3+ at the S6 site in bulk and nanocrystalline cubic Y2O3

被引：53

作者：

Jia, ML

Zhang, JH ^{[1
]}

Lu, SZ

Sun, JT

Luo, YS

Ren, XG

Song, HW

Wang, XJ

机构：

[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Key Lab Excited State Proc, Changchun 130033, Peoples R China

[2] Georgia So Univ, Dept Phys, Statesboro, GA 30460 USA

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 384卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/j.cplett.2003.11.103

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：

Increases of emission intensities for Eu3+ at the S-6 site relative to that at the C-2 site have been observed as UY excitation wavelength decreases from 300 to 200 nm in both bulk and nanocrystalline cubic Y2O3:Eu3+. Analysis of excitation spectra suggests that the energy transfer from the host prefers to the S6 site. In addition, spectral red-shift has been found in both charge transfer bands in nanocrystalline Y2O3:Eu3+ compared to the bulk material. The number ratio of S-6 sites to C-2 sites is also smaller in nanocrystalline Y2O3:Eu3+ than that in the bulk one. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：193 / 196

页数：4

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