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Near-infrared light emitting microcrystalline glass with embedded Er:YAG microcrystalline phase and preparation method of microcrystalline glass

A glass-ceramic and near-infrared technology, applied in the field of near-infrared light-emitting materials, can solve the problems of large difference in refractive index between glass phase and YAG phase, low near-infrared light-emitting performance, low transmittance of visible light and near-infrared light, etc. Achieve the effect of reducing light scattering, high transmittance and good luminous performance

Inactive Publication Date: 2018-08-24
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In summary, the existing Er:YAG glass-ceramic mainly has the following problems: (1) In order to obtain the matrix glass, except YAG 2 o 3 、Al 2 o 3 In addition to the essential ingredients such as Er source, additional SiO is added 2 , B 2 o 3 or P 2 o 5 Main group element oxides and Li 2 O, Na 2 O, K 2 Alkali metal oxides such as O or Ca 2 O, Sr 2 O. Ba 2 Alkaline-earth metal oxide components such as O inevitably cause but the cations in the above-mentioned oxides enter the microcrystalline phase during the crystallization process of the glass-ceramics, which reduces the near-infrared luminescence performance of Er:YAG glass-ceramics; (2) The particle size of the obtained microcrystalline phase is mostly at the micron level, and the refractive index difference between the glass phase and the YAG phase is large, resulting in low transmittance of visible light and near-infrared light

Method used

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  • Near-infrared light emitting microcrystalline glass with embedded Er:YAG microcrystalline phase and preparation method of microcrystalline glass
  • Near-infrared light emitting microcrystalline glass with embedded Er:YAG microcrystalline phase and preparation method of microcrystalline glass
  • Near-infrared light emitting microcrystalline glass with embedded Er:YAG microcrystalline phase and preparation method of microcrystalline glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Prepare transparent Er:YAG glass-ceramics (GC), the specific steps are as follows:

[0057] (1) Glass frit mixing: the analytically pure raw materials are mixed according to 25Y 2 o 3 :73Al 2 o 3 : 2Er 2 o 3 (mol%) is placed in a mortar after accurately weighing the proportioning ratio, fully grinds and mixes in an agate mortar, and obtains a uniform glass mixture;

[0058] (2) Glass frit pressing: the glass mixture is placed in the mould, and a desktop electronic tablet press is used for tableting, and the pressure is set at 10Mpa to obtain a flake glass mixture;

[0059] (3) Glass frit pre-firing: Put the flake glass mixture into the crucible, then place the crucible in a muffle furnace and pre-fire it in an air atmosphere, raise the temperature from room temperature to 1500 °C at a rate of 5 °C / min, and keep it for 2 hours , and finally cooled to room temperature with the furnace to obtain a bulk glass mixture;

[0060] (4) Preparation of glass by container-le...

Embodiment 2

[0067] Prepare transparent Er:YAG glass-ceramics (GC), the specific steps are as follows:

[0068] (1) Glass frit mixing: the analytically pure raw materials are mixed according to 65.3YAlO 3 : 32.7Al 2 o 3 : 2ErF 3 (mol%) is accurately weighed and placed in a mortar, fully ground and mixed to obtain a uniform glass mixture;

[0069] (2) Glass frit pressing: the glass mixture is placed in the mould, and a desktop electronic tablet press is used for tableting, and the pressure is set at 10Mpa to obtain a flake glass mixture;

[0070] (3) Glass frit pre-firing: Put the flake glass mixture into the crucible, then place the crucible in a muffle furnace and pre-fire it in an air atmosphere, raise the temperature from room temperature to 1300 °C at a rate of 5 °C / min, and keep it for 2 hours , and finally cooled to room temperature with the furnace to obtain a bulk glass mixture;

[0071] (4) Preparation of glass by container-less method: place the bulk glass mixture on the noz...

Embodiment 3

[0075] Prepare transparent Er:YAG glass-ceramics (GC), the specific steps are as follows:

[0076] (1) Glass frit mixing: the analytically pure raw materials are mixed according to 29.4Y 2 o 3 : 66.7Al 2 o 3 : 3.9ErCl 3 (mol%) is accurately weighed and placed in a mortar, fully ground and mixed to obtain a uniform glass mixture;

[0077] (2) Glass frit pressing: the glass mixture is placed in the mould, and a desktop electronic tablet press is used to press the tablet, and the pressure is set at 20Mpa to obtain a sheet glass mixture;

[0078] (3) Glass frit pre-firing: put the flake glass mixture into the crucible, then place the crucible in a muffle furnace and pre-fire it in an air atmosphere, raise the temperature from room temperature to 1700 °C at a rate of 5 °C / min, and keep it for 2 hours , and finally cooled to room temperature with the furnace to obtain a bulk glass mixture;

[0079] (4) Preparation of glass by container-less method: place the bulk glass mixture...

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Abstract

The invention provides near-infrared light emitting microcrystalline glass with an embedded Er:YAG microcrystalline phase and a preparation method of the microcrystalline glass. A microcrystalline phase substance is YAG, active ions are Er <3+> and uniformly doped into YAG microcrystalline phases, the microcrystalline phases are uniformly distributed in the microcrystalline glass, cationic mole percentage of the near-infrared light emitting microcrystalline glass includes, 13-34.9% of Y<3+>, 65-77% of Al<3+> and 0.1-10% of Er<3+>, and the sum of the mole percentage of the active ions Er<3+> and Y<3+> is 23-35%. Er:YAG microcrystalline separated out from the Er:YAG microcrystalline glass is small and uniform in size, so that the prepared microcrystalline glass has the advantages of high transparency and heat conductivity, resistance to deliquescence and x-ray irradiation, excellent optical performance and the like, and the microcrystalline glass can be applied to the fields of optical amplifiers, lasers and the like.

Description

technical field [0001] The invention relates to a near-infrared luminescent material, in particular to a glass-ceramic with high light transmittance in the near-infrared band embedded with Er:YAG microcrystalline phase and a preparation method thereof. Background technique [0002] Near-infrared luminescent material is a kind of optical functional material that can produce near-infrared fluorescence in a specific range under the excitation of Xe lamps, visible wavelength semiconductor lasers, near-infrared wavelength semiconductor lasers, or other visible-near-infrared wavelength lasers, and is widely used. In the field of gain materials for optical amplifiers and lasers, the requirements for near-infrared luminescent materials are different according to different application fields, but in general, near-infrared luminescent materials should have the following characteristics: high luminous efficiency, slow fluorescence decay, laser It has the characteristics of high output ...

Claims

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Application Information

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IPC IPC(8): C03C10/02C03C4/12
CPCC03C4/12C03C10/00
Inventor 阮健钟世康张越鹏田晨韩建军赵修建
Owner WUHAN UNIV OF TECH
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