The transformation of Eu3+ → Eu2+ in SiO2-Al2O3-NaF-YF3: Eu glasses and glass ceramics

被引：6

作者：

Yang, Fugui ^{[1
,2
,3
]}

Chen, Guitang ^{[1
,2
]}

You, Zhenyu ^{[1
]}

Sun, Chenli ^{[1
,2
]}

Cao, Jiafeng ^{[1
,2
]}

Ji, Yuexia ^{[1
,2
]}

Wang, Yeqing ^{[1
,2
]}

Wang, Yan ^{[1
]}

Zhu, Zhaojie ^{[1
]}

Li, Jianfu ^{[1
]}

Tu, Chaoyang ^{[1
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, Key Lab Mat Chem & Phys, Fuzhou 350002, Fujian, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 10086, Peoples R China

[3] Fujian Normal Univ, Elect & Informat Engn Dept, Fuqing Branch, Fuzhou, Peoples R China

来源：

MATERIALS LETTERS | 2011年 / 65卷 / 09期

关键词：

Ceramics; Nano-composites; Nano-materials; Optical materials and properties; LUMINESCENT PROPERTIES; AIR;

D O I：

10.1016/j.matlet.2011.01.076

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Transparent glasses and glass ceramics of SiO2-Al2O3-NaF-YF3: Eu3+ containing the YF3 nano-crystals were prepared in air atmosphere and their spectroscopic properties are presented. The blue emission peaked at 433 nm shown in the spectra indicate the existence of Eu2+. The transformation of Eu3+-> Eu2+ is related with the existence of F-, which is the key trigger for the transformation in air atmosphere. In addition, the emission intensities of Eu3+ and Eu2+ were also related with the concentrations of Eu3+. The emission intensities increased heavily with the increasing dopant of EuF3 in both glasses and glass ceramics. When the doped concentration of EuF3 was higher than 0.5 mol.%, the concentration quenching effect occurred. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1337 / 1339

页数：3

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