Sol-gel transparent nano-glass-ceramics containing Eu3+-doped NaYF4 nanocrystals

被引：34
|
作者：
Santana-Alonso, A. [1 ]
Yanes, A. C. [1 ]
Mendez-Ramos, J. [2 ]
del-Castillo, J. [1 ]
Rodriguez, V. D. [2 ]
机构：
[1] Univ La Laguna, Dept Fis Basica, E-38206 Tenerife, Spain
[2] Univ La Laguna, Dept Fis Fundamental & Expt Elect & Sistemas, E-38206 Tenerife, Spain
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2010年 / 356卷 / 18-19期
关键词：
Glass ceramics; X-ray diffraction; TEM/STEM; Nanocrystals; Luminescence; Optical spectroscopy; Sol-gels (xerogels); UP-CONVERSION; SPECTROSCOPY; LUMINESCENCE; FABRICATION; ER3+;
D O I：
10.1016/j.jnoncrysol.2009.12.023
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A spectroscopic study has been carried out in transparent nano-glass-ceramics containing Eu3+-doped NaYF4 nanocrystals, successfully developed for the first time by thermal treatment of precursor sol-gel derived glasses. X-ray diffraction and high-resolution transmission electron microscopy measurements confirmed the precipitation of NaYF4 nanocrystals during heat treatment and their corresponding sizes have been calculated by using Scherrer's equation and from electron microscopy measurements. Changes in the luminescence spectra with the temperature of the heat treatment have been analyzed and correlated with the crystallinity degree of the samples. In addition, emission spectra have been obtained for selected excitation wavelengths, observing large excitation selectivity among the fraction of the rare-earth ions located in near crystalline environments and those remaining in the silica glassy phase. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：933 / 936
页数：4
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