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Rare earth ion doped BaBr2 glass ceramics and preparation method thereof

A technology of glass ceramics and rare earth ions, which is applied in the field of BaBr2 glass ceramics doped with rare earth ions and its preparation, can solve the problems of poor chemical stability and mechanical strength, low phonon energy, easy moisture absorption of crystals, etc., and achieve mechanical Good performance, low phonon energy, high transmittance of blue-violet light

Inactive Publication Date: 2016-02-10
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

BaBr 2 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 BaBr 2 crystals have higher upconversion efficiency than fluoride crystals doped with rare earth ions, but BaBr 2 Crystals are easy to absorb moisture, require special handling and storage, are difficult to prepare, and have poor chemical stability and mechanical strength, which affect their practical applications.
But there is no Yb yet 3+ 、Er 3+ 、Tm 3+ and Ho 3+ doped BaBr 2 Published reports on the use of glass-ceramics in upconversion luminescent materials

Method used

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  • Rare earth ion doped BaBr2 glass ceramics and preparation method thereof
  • Rare earth ion doped BaBr2 glass ceramics and preparation method thereof
  • Rare earth ion doped BaBr2 glass ceramics and preparation method thereof

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Effect test

Embodiment 1

[0020] T m 3+ , Yb 3+ doped BaBr 2 The molar percentage composition of glass ceramics is: SiO 2 80mol%, BaBr 2 16mol%, TmBr 3 0.5mol%, YbBr 3 3.5mol%, the process for preparing glass-ceramics of the above composition is as follows:

[0021] (1) Weigh barium acetate, ytterbium acetate, and thulium acetate, and the parts are composed of BaBr in the above molar percentages 2 , YbBr 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;

[0022] (2) SiO in the same molar percentage composition as step (1) 2 The molar percentage content takes ethyl orthosilicate and dissolves it in ethanol to obtain ethyl orthosilicate solution, then mixes the mixed solution prepared in step (1) with ...

Embodiment 2

[0027] Er3+ , Yb 3+ doped BaBr 2 The molar percentage composition of glass ceramics is: SiO 2 80.5mol%, BaBr 2 15mol%, ErBr 3 0.5mol%, YbBr 3 4mol%, after the preparation and heat treatment process identical with embodiment 1, obtain transparent rare earth ion Er 3+ , Yb 3+ doped BaBr 2 Glass-ceramic. The glass-ceramic was measured with a TRIAX550 fluorescence spectrometer, under the excitation condition of a 970nm laser, strong green and red upconversion luminescence were observed.

Embodiment 3

[0029] Er 3+ 、Tm 3+ , Yb 3+ doped BaBr 2 The molar percentage composition of glass ceramics is: SiO 2 84mol%, BaBr 2 13mol%, 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 BaBr 2 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. By changing the doping concentration of rare earth, the ratio of red, green and blue luminous intensity can be controlled.

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Abstract

The invention discloses rare earth ion doped BaBr2 glass ceramics and a preparation method thereof. The rare earth ion doped BaBr2 glass ceramics are prepared from SiO2 80-92.5 mol%, BaBr2 7-16 mol% and LnBr3 0.5-4.5 mol%, wherein the LnBr3 is at least one of YbBr3, ErBr3, TmBr3 and HoBr3. The rare earth ion doped BaBr2 glass ceramics have the advantages that the rare earth ion doped BaBr2 glass ceramics prepared by means of the preparation method are transparent, are resistant to deliquescence, are good in mechanical performance and higher in blue and violet light transmittance, have the performances of low phonon energy, high upconversion efficiency and the like, enable the efficiency of an upconversion laser to be improved greatly, a preparation method of the glass ceramics is simple, and the production cost is lower.

Description

technical field [0001] The present invention relates to a rare earth ion doped glass ceramics, in particular to a rare earth ion doped BaBr used as an up-conversion luminescent material 2 Glass-ceramic and its preparation method. Background technique [0002] The up-conversion luminescence of rare earth ions refers to the phenomenon that when a sample doped with rare earth ions is irradiated with excitation light with a longer wavelength, light with a wavelength shorter than that of the excitation light is emitted. 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. Violet-blue-green 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...

Claims

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Application Information

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IPC IPC(8): C03C10/16C03C4/12
Inventor 张志雄张约品欧阳绍业张为欢王倩
Owner NINGBO UNIV