Energy transfer between UO22+ and Eu3+ in β-NaYF4

被引：13

作者：

Jia, Guohua ^{[1
]}

Tanner, Peter A. ^{[1
]}

机构：

[1] City Univ Hong Kong, Dept Biol & Chem, Kowloon, Hong Kong, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 471卷 / 1-2期

关键词：

Inorganic materials; Chemical synthesis; Optical properties; Luminescence; Energy transfer; UO22+; Eu3+; Hexagonal NaYF4; CRYSTAL-STRUCTURE; EUROPIUM IONS; LUMINESCENCE; URANYL; LN;

D O I：

10.1016/j.jallcom.2008.04.015

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：

beta-NaYF4:UO22+, beta-NaYF4:Eu3+ and beta-NaYF4: UO22+,Eu3+ have been prepared by hydrothermal synthesis. Emission spectra of these three samples were measured at temperatures down to 10 K. Eu3+ ions occupy several distinct sites with symmetry C-3 or lower in this host lattice whereas UO22+ ions form a disordered system with fourfold or fivefold equatorial fluoride coordination geometry. The occurrence of energy transfer from UO22+ to Eu3+ is demonstrated by excitation spectra and lifetime measurements. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：557 / 560

页数：4

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