Li3YCl6 glass ceramics doped with rare earth ions and preparation method of Li3YCl6 glass ceramics

Abstract

The invention discloses Li3YCl6 glass ceramics doped with rare earth ions. The Li3YCl6 glass ceramics is prepared from 87.8-94 mol% of SiO2, 5.5-10 mol% of Li3YCl6 and 0.5-3 mol% of LnCl3, wherein LnCl3 is at least one of YbCl3, ErCl3, TmCl3 and HoCl3. The Li3YCl6 glass ceramics has the advantages of being transparent, resistant to air slake, good in mechanical performance, high in blue and purple light transmittance, low in phonon energy, high in up-conversion efficiency, capable of greatly improving efficiency of an up-conversion laser device, simple in preparation method 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 Li 3 YCl 6 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. 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 reduc...

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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-ceramic 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 the short wavelength of visible light, which affects the output of up-conversion luminescence; for example, the publication number is CN103951243, and the name is "Cs doped with rare earth ions 2 LiYCl 6 The invention patent application of "glass ceramics and its preparation method" also discloses that a crystallite phase is Cs 2 LiYCl 6 , the glass phase is GeO 2 Mainly glass ceramics, doped with rare earth ions as Ce 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 mainly used as scintillation material

But there is no rare earth ion Yb 3+ 、Er 3+ 、Tm 3+ and Ho 3+ Doped Li 3 YCl 6 Published reports on the use of glass-ceramics in upconversion luminescent materials

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