Remarkable enhancement of Er3+ emission at 1.54 μm in Er/Yb co-doped SiO2-SnO2 glass-ceramics

被引：13
作者：
Dung, Cao T. M. [1 ]
Le Van Hieu [1 ]
Lam Quang Vinh [2 ]
Van, Tran T. T. [1 ]
机构：
[1] Vietnam Natl Univ Ho Chi Minh City, Univ Sci, Fac Mat Sci & Technol, 227 Nguyen Van Cu,Dist 5, Ho Chi Minh City, Vietnam
[2] Vietnam Natl Univ Ho Chi Minh City, Ho Chi Minh City, Vietnam
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 757卷
关键词：
SnO2-SiO2; glass-ceramic; Er3+ ions; Energy transfer; Emission at 1.54 mu m; UP-CONVERSION LUMINESCENCE; ENVIRONMENT SEGREGATION; YB3+; NANOCRYSTALS;
D O I：
10.1016/j.jallcom.2018.05.071
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 study, the Er3+ and Yb3+ ions are incorporated in SiO2-SnO2 glass-ceramics containing SnO2 crystals with the size of 5 nm. XRD and TEM results show that the SnO2 particles are dispersed homogeneously in the glass matrix. The difference of emission spectral profiles under excitation wavelengths at 340 nm and 520 nm, which correspond to the indirect and direct excitation of Er3+ respectively, suggests that the Er3+ ions are located both in the amorphous silica and in SnO2 crystals or in their vicinity. The changes in the emission spectra with excitation wavelength (3D spectra) indicate that energy transfer from SnO2 nanocrystals to Er3+ and Yb3+ ions occurs. Noticeably, the emission at 1.54 mu m of Er3+ increases by a factor of 50 due to the efficient energy transfers from SnO2 crystals and Yb3+ ions to Er3+ ions. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：489 / 495
页数：7
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