The behavior of Er3+ dopants during crystallization in oxyfluoride silicate glass ceramics

被引：16

作者：

Lin, Lejing ^{[1
,2
]}

Ren, Guozhong ^{[1
,2
]}

Chen, Minpeng ^{[1
,2
]}

Liu, Yang ^{[1
,2
]}

机构：

[1] Xiangtan Univ, Inst Modern Phys, Xiangtan 411105, Peoples R China

[2] Xiangtan Univ, Key Lab Low Dimens Mat & Applicat Technol, Minist Educ, Xiangtan 411105, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 486卷 / 1-2期

关键词：

Nanocrystals; X-ray diffraction; Luminescence; UP-CONVERSION LUMINESCENCE; RARE-EARTH IONS; MULTIPHONON RELAXATION; FLUORESCENCE; NANOCRYSTALS; INTENSITIES; ABSORPTION;

D O I：

10.1016/j.jallcom.2009.05.154

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：

In this paper. the changes of local environment of Er3+ during heat treatment process have been studied in 50SiO(2)-45PbF(2)-5PbO system. The samples were characterized by X-ray diffraction (XRD), absorption spectra, fluorescence decay curves and luminescence spectra. The experimental results indicate that PbF2 crystals were precipitated in the precursor sample. However. a significant fraction of Er3+ remains in the glassy phase. With increasing heat treatment time, the Er3+ in the glass matrix may enter into fluoride nanocrystals gradually. When the heat treatment time reached 15 min, most of the Er3+ ions were incorporated into the fluoride nanocrystals. Based on the experimental analysis, we considered that Er3+ not only act as nucleating agents for the precipitation of crystalline fluoride phase during nucleation process but also enter into nanocrystals during crystals growth process. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：261 / 264

页数：4

共 25 条

[21] Infrared luminescence of transparent glass ceramic containing Er3+:NaYF4 nanocrystals [J].