Remarkable enhancement of Er^sup 3+^ emission at 1.54?µm in Er/Yb co-doped SiO^sub 2^-SnO^sub 2^ glass-ceramics

Remarkable enhancement of Er^sup 3+^ emission at 1.54?µm in Er/Yb co-doped SiO^sub 2^-SnO^sub 2^ glass-ceramics

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 wavelengt...

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Bibliographic Details
Published in:Journal of alloys and compounds Vol. 757; p. 489
Main Authors: Dung, Cao TM, Hieu, Le Van, Vinh, Lam Quang, Van, Tran TT
Format: Journal Article
Language:English
Published: Lausanne Elsevier BV 15-08-2018
Subjects:
Ceramics
Crystals
Emission spectra
Erbium
Excitation spectra
Glass ceramics
Ions
Silica
Silicon dioxide
Tin dioxide
Ytterbium
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Summary: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 μm of Er3+ increases by a factor of 50 due to the efficient energy transfers from SnO2 crystals and Yb3+ ions to Er3+ ions.
ISSN:0925-8388
1873-4669