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K2CeI5 glass ceramics doped with rare earth ions and preparation method of K2CeI5 glass ceramics

A technology of glass-ceramics and rare earth ions, which is applied in the field of K2CeI5 glass-ceramics doped with rare earth ions and its preparation, can solve the problems of poor chemical stability and mechanical strength, low phonon energy, and easy moisture absorption of crystals, and achieve mechanical Good performance, low phonon energy, high transmittance of blue-violet light

Inactive Publication Date: 2016-01-20
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

K 2 CeI 5 Crystals have lower phonon energy than fluoride, and are more suitable as rare earth-doped upconversion luminescent hosts, rare earth ion-doped K 2 CeI 5 crystals have higher upconversion efficiency than fluoride crystals doped with rare earth ions, but K 2 CeI 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+ Doped K 2 CeI 5 Published reports on the use of glass-ceramics in upconversion luminescent materials

Method used

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  • K2CeI5 glass ceramics doped with rare earth ions and preparation method of K2CeI5 glass ceramics
  • K2CeI5 glass ceramics doped with rare earth ions and preparation method of K2CeI5 glass ceramics
  • K2CeI5 glass ceramics doped with rare earth ions and preparation method of K2CeI5 glass ceramics

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Er 3+ 、Tm 3+ , Yb 3+ Doping K 2 CeI 5 The molar percentage composition of glass-ceramic is: SiO 2 87mol, K 2 CeI 5 10mol%, ErI 3 0.1mol%, TmI 3 0.1mol%, YbI 3 2.8mol%, the process for preparing glass-ceramics of the above composition is as follows:

[0021] (1) Weigh cerium acetate, potassium acetate, ytterbium acetate, erbium acetate and thulium acetate, wherein the parts of cerium acetate and potassium acetate are respectively in molar percentage composition K 2 CeI 5 The mole percentage content weighs, and the part of ytterbium acetate, erbium acetate and thulium acetate is composed of YbI in the above-mentioned same mole percentage respectively 3 , ErI 3 , TmI 3 Weigh the molar percentage content, dissolve the above-mentioned acetate in deionized water to form an acetate solution, add triiodoacetic acid to the acetate solution to obtain a transparent mixed solution, wherein triiodoacetic acid and acetate solution The molar ratio of the sum of metal ion...

Embodiment 2

[0027] T m 3+ , Yb 3+ Doping K 2 CeI 5 The molar percentage composition of glass ceramics is: SiO 2 88.5mol%, K 2 CeI 5 9mol%, TmI 3 0.5mol%, YbI 3 2mol%, after the same preparation and heat treatment process as in Example 1, a transparent rare earth ion Tm 3+ , Yb 3+ Doped K 2 CeI 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+ Doping K 2 CeI 5 The molar percentage composition of glass ceramics is: SiO 2 92mol%, K 2 CeI 5 7.5mol%, ErI 3 0.5mol%, after the preparation and heat treatment process identical with embodiment 1, obtain transparent rare earth ion Er 3+ Doped K 2 CeI 5 Glass-ceramic. The glass-ceramic is subjected to a spectral test, and strong ultraviolet and purple up-conversion luminescence are observed when excited by light sources with wavelengths of 543nm and 548.8nm.

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Abstract

The invention discloses K2CeI5 glass ceramics doped with rare earth ions. The K2CeI5 glass ceramics is prepared from 87-92 mol% of SiO2, 7.5-10 mol% of K2CeI5 and 0.5-3 mol% of LnI3, wherein LnI3 is at least one of YbI3, ErI3 and TmI3. The K2CeI5 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 K glass used as an up-conversion luminescent material 2 CeI 5 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 redu...

Claims

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Application Information

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