Rare earth ion doped LaCl3 glass ceramics and preparation method thereof

Abstract

The invention discloses rare earth ion doped LaCl3 glass ceramics. The rare earth ion doped LaCl3 glass ceramics are prepared from SiO2 75-90.5 mol%, LaCl3 9-20 mol% and LnCl3 0.5-5 mol%, wherein the LnCl3 is at least one of YbCl3, ErCl3, TmCl3 and HoCl3. The rare earth ion doped LaCl3 glass ceramics have the advantages that the prepared rare earth ion doped LaCl3 glass ceramics 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 LaCl used as an up-conversion luminescent material 3 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. 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 material, mainly because the lower phonon energy ...

AI Technical Summary

Problems solved by technology

At present, chloride transparent glass-ceramics is mainly used as scintillation and up-conversion luminescent materials, such as the publication number CN103382089, and the name is "Containing Cs 3 LaCl 6 Nanocrystalline transparent sulfur-halogen glass ceramics and its preparation" invention patent application discloses doped Nd 3+ or Er 3+ ions, with Cs 3 LaCl 6 Glass-ceramics is microcrystalline phase and glass phase is sulfide, but the physical and chemical properties of sulfide are worse than that of oxide, and it is not transparent at short wavelengths of visible light, which affects the output of up-conversion luminescence; for example, the publication number is CN103951211, and the name is "LaCl doped with rare earth ions 3 The invention patent application of "glass ceramics and its preparation method" also discloses that a crystallite phase is LaCl 3 , the glass phase is P 2 o 5 The main glass-ceramic, the doped rare earth ion is La 3+ 、Eu 3+ , Tb 3+ 、Pr 3+ and Nd 3+ One of them, prepared by melt quenching method and subsequent heat treatment, has good scintillation performance, and is used as a scintillation luminescent material

But there is no trivalent rare earth ion Yb 3+ 、Er 3+ 、Tm 3+ and Ho 3+ Doped LaCl 3 Published reports on the use of glass-ceramics in upconversion luminescent materials

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