Emission of Eu3+ in SiO2-ZnO glass and SiO2-SnO2 glass-ceramic: Correlation between structure and optical properties of Eu3+ ions

被引：25

作者：

Van Tran, T. T. ^{[1
]}

Dung Cao, T. M. ^{[1
]}

Quang Vinh Lam ^{[2
]}

Van Hieu Le ^{[1
]}

机构：

[1] Vietnam Natl Univ Ho Chi Minh City, Fac Mat Sci, Univ Sci, 227 Nguyen Van Cu,Dist 5S, Ho Chi Minh, Vietnam

[2] Vietnam Natl Univ Ho Chi Minh City, Ho Chi Minh City, Vietnam

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2017年 / 459卷

关键词：

Glass; Transparent glass-ceramic; Energy transfer; Eu3+ ions; Semiconductors nanoparticles; ENERGY-TRANSFER; INFRARED-EMISSION; ZNO NANOPARTICLES; LOCAL-STRUCTURE; SNO2; NANOCRYSTALS; LUMINESCENCE; FILMS; LASER;

D O I：

10.1016/j.jnoncrysol.2016.12.040

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：

SiO2:Eu3+ based free-crack transparent bulk composites containing two types of semiconductor nanoparticles (SnO2 or ZnO) were synthesized by sol-gel process. The results of vibrational spectra (Raman, FT-IR), X-ray diffraction (XRD) and Transmission Electron Microscopy (TEM) indicate that the SiO2-SnO2 matrix possess the structure of a glass-ceramic due to the presence of SnO2 nanocrystals with average size of 7 +/- 2 nm homogeneously distributed in silica matrix whereas the SiO2-ZnO still remain amorphous structure after a heat treatment at 600 degrees C for 1 h. The energy transfer from nanoparticles to Eu3+ ions is observed in both composites, but this process is more efficient in the glass-ceramic systems. Moreover, the competition between magnetic dipole and electric dipole transitions of Eu3+ as well as the shape of emission bands depends strongly on the structure of host matrix. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：57 / 62

页数：6

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