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Rare-earth ion doped Rb2LaBr5 microcrystalline glass and preparation method thereof

A technology of glass-ceramics and rare earth ions, applied in the field of rare-earth ion-doped Rb2LaBr5 glass-ceramics and its preparation, can solve the problems of poor chemical stability and mechanical strength, low phonon energy, easy moisture absorption of crystals, etc. Good performance, low phonon energy, high transmittance of blue-violet light

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

Rb 2 LaBr 5 Crystals have lower phonon energy than fluoride, and are more suitable as rare earth-doped upconversion luminescent hosts, rare earth ion-doped Rb 2 LaBr 5 crystals have higher upconversion efficiency than fluoride crystals doped with rare earth ions, but Rb 2 LaBr 5 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 the practical application of up-conversion luminescence.
But there is no trivalent rare earth ion Yb 3+ 、Er 3+ 、Tm 3+ and Ho 3+ Doped Rb 2 LaBr 5 Published reports on the use of glass-ceramics in upconversion luminescent materials

Method used

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  • Rare-earth ion doped Rb2LaBr5 microcrystalline glass and preparation method thereof
  • Rare-earth ion doped Rb2LaBr5 microcrystalline glass and preparation method thereof
  • Rare-earth ion doped Rb2LaBr5 microcrystalline glass and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Er 3+ , Yb 3+ doped Rb 2 LaBr 5 The molar percentage composition of glass ceramics is: SiO 2 89mol%, Rb 2 LaBr 5 8mol%, ErBr 3 0.5mol%, YbBr 3 2.5mol%, the process for preparing glass-ceramics of the above composition is as follows:

[0021] (1) Take by weighing lanthanum acetate, rubidium acetate, ytterbium acetate and erbium acetate, wherein the parts of lanthanum acetate and rubidium acetate are composed of Rb in molar percentage respectively 2 LaBr 5 The molar percentage content weighs, and the part of ytterbium acetate and erbium acetate is composed of YbBr in the above-mentioned same molar percentage respectively 3 、ErBr 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;...

Embodiment 2

[0027] T m 3+ , Yb 3+ doped Rb 2 LaBr 5 The molar percentage composition of glass ceramics is: SiO 2 89mol%, Rb 2 LaBr 5 9mol%, TmBr 3 0.3mol%, YbBr 3 1.7mol%, after the same preparation and heat treatment process as in Example 1, a transparent rare earth ion Tm 3+ , Yb 3+ Doped Rb 2 LaBr 5 Glass-ceramic. The glass-ceramic was measured with a TRIAX550 fluorescence spectrometer, under the excitation condition of a 970nm laser, a strong blue up-conversion luminescence was observed.

Embodiment 3

[0029] Er 3+ 、Tm 3+ , Yb 3+ doped Rb 2 LaBr 5 The molar percentage composition of glass ceramics is: SiO 2 88mol%, Rb 2 LaBr 5 9mol%, 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 Rb 2 LaBr 5 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 Rb2LaBr5 microcrystalline glass comprising the following components in mole percentage: 88-93mol% of SiO2, 6.5-9mol% of Rb2LaBr5 and 0.5-3mol% of LnBr3, wherein the LnBr3 is at least one of YbBr3, ErBr3, TmBr3 and HoBr3. The rare-earth ion doped Rb2LaBr5 microcrystalline glass disclosed by the invention has the advantages of being transparent and deliquescence-resistant, good in mechanical property and relatively high in blue-violet light transmission, having the performances of low phonon energy, high up-conversion efficiency and the like, and being capable of greatly improving the efficiency of an up-conversion laser; moreover, the preparation method of the microcrystalline glass is simple, and is relatively 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 Rb used as an up-conversion luminescent material 2 LaBr 5 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 th...

Claims

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Application Information

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IPC IPC(8): C03C10/16
Inventor 张为欢夏海平欧阳绍业张志雄王倩
Owner NINGBO UNIV
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