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

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...

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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

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