Rare-earth-ion-doped NaBaLaBr6 microcrystalline glass and preparation method thereof

A technology of glass ceramics and rare earth ions, which is applied in the field of NaBaLaBr6 glass ceramics doped with rare earth ions and its preparation, can solve the problems of poor chemical stability and mechanical strength, easy moisture absorption of crystals, low phonon energy, etc., and achieve mechanical Good performance, high transmittance of blue-violet light, low phonon energy

Inactive Publication Date: 2016-01-27
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

NaBaLaBr 6 The crystal has lower phonon energy than fluoride, and is more suitable as a rare-earth-doped upconversion luminescent host, and rare-earth ion-doped NaBaLaBr 6 crystals have higher upconversion efficiency than fluoride crystals doped with rare earth ions, but NaBaLaBr 6 Crystals are easy to absorb moisture, difficult to prepare, require special handling and storage, poor chemical stability and mechanical strength, etc., which affect the practical application of upconversion luminescence.
But there is no trivalent rare earth ion Yb 3+ 、Er 3+ and Tm 3+ Doped NaBaLaBr 6 Published reports on the use of glass-ceramics in upconversion luminescent materials

Method used

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  • Rare-earth-ion-doped NaBaLaBr6 microcrystalline glass and preparation method thereof
  • Rare-earth-ion-doped NaBaLaBr6 microcrystalline glass and preparation method thereof
  • Rare-earth-ion-doped NaBaLaBr6 microcrystalline glass and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0020] T m 3+ , Yb 3+ doped NaBaLaBr 6 The molar percentage composition of glass ceramics is: SiO 2 89mol%, NaBaLaBr 6 9mol%, TmBr 3 0.5mol%, YbBr 3 1.5mol%, the process for preparing glass-ceramics of the above composition is as follows:

[0021] (1) Weigh lanthanum acetate, sodium acetate, barium acetate, ytterbium acetate and thulium acetate, wherein the parts of lanthanum acetate, sodium acetate and barium acetate are composed of NaBaLaBr in molar percentage respectively 6 The mole percentage content weighs, and the part of ytterbium acetate and thulium acetate is composed of YbBr in the same mole percentage as above. 3 , TmBr 3 Weigh the mole percentage content of the above-mentioned acetate, dissolve the above-mentioned acetate in deionized water to form an acetate solution, add tribromoacetic acid to the acetate solution to obtain a transparent mixed solution, wherein tribromoacetic acid and acetate solution The molar ratio of the sum of metal ions is 3:1;

[0...

Embodiment 2

[0027] Er 3+ doped NaBaLaBr 6 The molar percentage composition of glass ceramics is: SiO 2 94mol%, NaBaLaBr 6 5.5mol%, ErBr 3 0.5mol%, after the preparation and heat treatment process identical with embodiment 1, obtain transparent rare earth ion Er 3+ Doped NaBaLaBr 6 Glass-ceramic. The glass-ceramic is subjected to a spectral test, and strong ultraviolet and purple up-conversion luminescence are observed when excited by light sources with wavelengths of 543nm and 548.8nm.

Embodiment 3

[0029] Er 3+ 、Tm 3+ , Yb 3+ doped NaBaLaBr 6 The molar percentage composition of glass ceramics is: SiO 2 87mol%, NaBaLaBr 6 10mol%, ErBr 3 0.1mol%, TmBr 3 0.1mol%, YbBr 3 2.8mol%, after the preparation and heat treatment process identical with embodiment 1, obtain transparent rare earth ion Er 3+ 、Tm 3+ , Yb 3+ Doped NaBaLaBr 6 Glass-ceramic. The glass-ceramic was measured with a TRIAX550 fluorescence spectrometer, under the excitation condition of a 970nm laser, strong blue, green and red upconversion luminescence were observed.

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Abstract

The invention discloses rare-earth-ion-doped NaBaLaBr6 microcrystalline glass. The rare-earth-ion-doped NaBaLaBr6 microcrystalline glass comprises the following components in mole percentage: 87-94mol% of SiO2, 5.5-10mol% of NaBaLaBr6 and 0.5-3mol% of LnBr3, wherein LnBr3 is at least one of YbBr3, ErBr3 and TmBr3. The obtained rare-earth-ion-doped NaBaLaBr6 microcrystalline glass has the advantages of transparency, deliquescence resistance, good mechanical properties and high blue and violet light transmittance and has performances of low phonon energy and high upconversion efficiency, efficiency of an upconversion laser can be greatly improved, and the preparation method of the rare-earth-ion-doped NaBaLaBr6 microcrystalline glass is simple and low in production cost.

Description

technical field [0001] The present invention relates to a rare earth ion doped glass ceramics, in particular to a rare earth ion doped NaBaLaBr used as an up-conversion luminescent material 6 Glass-ceramic and its preparation method. Background technique [0002] Upconversion luminescence is a process that utilizes the absorption of multiple photons to generate radiative transitions, and the energy of the radiated photons is usually higher than that of the pump photons. Utilizing the up-conversion properties of rare earth ions, an inexpensive fiber laser that can work at room temperature and continuously output violet-blue-green light can be obtained. Up-conversion lasers can be used in various fields such as color displays, data storage, information technology, laser printing, and medical treatment. To improve the efficiency of upconversion luminescence, it is necessary to reduce the phonon energy of the host material, mainly because the lower phonon energy can reduce the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/16
Inventor 欧阳绍业张约品张为欢张志雄王倩
Owner NINGBO UNIV
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