Selective excitation of up-conversion luminescence by Yb3+–Er3+ energy transfer in glass and crystalline phase of oxyfluoride glass ceramics

Transparent oxyfluoride tellurite glass with the composition of TeO2-SiO2-AlF3-CaO-KF system were prepared by conventional melting and annealing technique, and the transparent oxyfluoride glass-ceramics containing CaF2 nano-crystallines were obtained by controlled heat-treatment. The effect of heat-treatment schedules on the crystallization behavior and the microstructure of the glass-ceramics were analyzed by differential scanning caborimetry (DSC) analysis, X-ray diffraction (XRD) analysis, infrared (IR) spectrum and scanning electron microscopy (SEM). The sole CaF2 crystalline phase was confirmed by XRD, the spherical CaF2 nano-crystallines at about 20~100nm embed homogeneously among the glassy matrix after crystallization by SEM observation. The size of CaF2 grains grew with the increase of crystallization temperature and holding time. Te and Si atoms existed in [TeO3] and [SiO4] forms. Part of Al atoms existed in the form of [AlO4] and formed network together with [SiO4] tetrahedron. The other Al atoms acted as modifiers in the form of [AlO6]. The transmittance of glass-ceramics can reach 85% in visible light and 90% in infrared waveband. The novel transparent oxyfluoride tellurite glass-ceramics are excellent matrix materials in up-conversion luminescence field.

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Energy transfer behaviors and tunable luminescence in Tb3+/Eu3+ codoped oxyfluoride glass ceramics containing cubic/hexagonal NaYF4 nanocrystals

Journal of Luminescence ◽

10.1016/j.jlumin.2019.01.061 ◽

2019 ◽

Vol 210 ◽

pp. 182-188 ◽

Cited By ~ 2

Author(s):

Xinyue Li ◽

Yongzhao Peng ◽

Xiantao Wei ◽

Shuo Yuan ◽

Yiwen Zhu ◽

...

Keyword(s):

Energy Transfer ◽

Glass Ceramics ◽

Oxyfluoride Glass

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Selective excitation in transparent oxyfluoride glass-ceramics doped with Nd3+

Journal of the European Ceramic Society ◽

10.1016/j.jeurceramsoc.2016.11.014 ◽

2017 ◽

Vol 37 (4) ◽

pp. 1695-1706 ◽

Cited By ~ 23

Author(s):

G. Gorni ◽

J.J. Velázquez ◽

G.C. Mather ◽

A. Durán ◽

G. Chen ◽

...

Keyword(s):

Glass Ceramics ◽

Selective Excitation ◽

Oxyfluoride Glass

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Infrared-to-Visible Upconversion by Yb3+-Er3+ Energy Transfer in Oxyfluoride Glass-Ceramics

Renewable Energy and the Environment ◽

10.1364/e2.2011.jwe10 ◽

2011 ◽

Cited By ~ 1

Author(s):

Ayoung Moon ◽

Mi-Yeon Yoo ◽

Dae-Young Lee ◽

Woon-Young Lee ◽

Ki-Soo Lim ◽

...

Keyword(s):

Energy Transfer ◽

Glass Ceramics ◽

Oxyfluoride Glass

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Behavior of Yb3+and Er3+during Heat Treatment in Oxyfluoride Glass Ceramics

Journal of Nanomaterials ◽

10.1155/2014/171045 ◽

2014 ◽

Vol 2014 ◽

pp. 1-10 ◽

Cited By ~ 5

Author(s):

M. H. Imanieh ◽

I. R. Martín ◽

J. Gonzalez-Platas ◽

B. Eftekhari Yekta ◽

V. K. Marghussian ◽

...

Keyword(s):

Heat Treatment ◽

Energy Transfer ◽

Phase Separation ◽

Transfer Process ◽

Glass Ceramics ◽

High Viscosity ◽

Treatment Temperature ◽

Alumina Content ◽

Oxyfluoride Glass ◽

Back Transfer

The effects of alumina content and heat treatment on upconversion properties of codoped (ErF3-YbF3) oxyfluoride glass ceramics were investigated. Results showed that alumina content had an effect on phase separation and viscosity of the glass. Due to the high viscosity of low alumina content glass, the phase separated areas were smaller in these specimens. Increasing the heat treatment temperature led to the incorporation of Er3+ions into CaF2crystals and also increased the Yb3+concentration in them. This increase improved the energy transfer and back transfer process between Er3+and Yb3+ions and as result upconversion intensity was increased.

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