Nano glass ceramic up-conversion luminescent material and preparation method thereof

A technology of luminescent materials and nano glass, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of low chemical stability, uncontrollable crystal grains, poor mechanical strength, etc., achieve high mechanical strength, reduce interaction and crossover Excellent effect of relaxation and corrosion resistance

Inactive Publication Date: 2014-05-21
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a new type of nano-glass ceramic up-conversion luminescent material with excellent luminescence performance and strong practicability and its preparation method to solve the problem of uncontrollable crystal grains and low chemical stability of traditional fluoride up-conversion luminescent materials , poor mechanical strength, unfriendly environment, etc.

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  • Nano glass ceramic up-conversion luminescent material and preparation method thereof
  • Nano glass ceramic up-conversion luminescent material and preparation method thereof
  • Nano glass ceramic up-conversion luminescent material and preparation method thereof

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preparation example Construction

[0036] The preparation method of the nano-glass ceramic up-conversion luminescent material of the present invention includes: mixing the oxide powders constituting the up-conversion luminescent material, finely grinding, pre-sintering, granulating with polyvinyl alcohol solution, and then pressing into tablets, two First sintering, and then put into an air-suspension laser heating furnace for containerless melting to obtain an ellipsoidal or spherical precursor oxide glass; perform precise and controllable heat treatment on the precursor oxide glass to obtain a nano-glass ceramic up-conversion luminescent material. More specifically, as an example, the following steps may be used.

[0037] (1) Containerless solidification of precursor glass:

[0038] a) powder mixing: take by weighing each component oxide according to the weight ratio of nanometer glass-ceramic material, wherein matrix composition can be La 2 o 3 、TiO 2 , ZrO 2 , the doped luminescent component can be Nd ...

Embodiment 1

[0060] Embodiment 1, bulk nano glass ceramics (La 0.95 Nd 0.04 Yb 0.01 )(Ti 0.95 Zr 0.05 ) 2.25 o 6 Up-conversion luminescent material and its preparation:

[0061] The preparation process of bulk nano glass ceramics is as mentioned above. Before the containerless solidification of the precursor glass, the powder is pre-fired at 1000°C for 10 hours, the atmosphere is air, and the cooling is furnace cooling. When compressed, the weight of each tablet is about 75mg, and the pressure is about 10MPa. The pressed sheet was then kept at 1200°C for 8 hours. When there is no container for solidification, use a 1.5mm nozzle, and the laser power is about 65W. After the wafer is completely melted and uniform, keep it warm for 2-5 minutes, and suddenly turn off the laser to obtain a glass ball with a diameter of about 3mm. Polish the glass ball on both sides, the thickness after polishing is about 1.5mm, and then conduct precise and controllable heat treatment in the differential...

Embodiment 2

[0062] Embodiment 2, bulk nano glass ceramics (La 0.81 Nd 0.04 Yb 0.15 )(Ti 0.95 Zr 0.05 ) 2.25 o 6 Up-conversion luminescent material and its preparation:

[0063] The preparation process of bulk nano glass ceramics is as mentioned above. Before the containerless solidification of the precursor glass, the powder is pre-fired at 1000°C for 10 hours, the atmosphere is air, and the cooling is furnace cooling. When compressed, the weight of each tablet is about 75mg, and the pressure is about 10MPa. The pressed sheet was then kept at 1200°C for 8 hours. When there is no container for solidification, use a 1.5mm nozzle, and the laser power is about 65W. After the wafer is completely melted and uniform, keep it warm for 2-5 minutes, and suddenly turn off the laser to obtain a glass ball with a diameter of about 3mm. Polish the glass ball on both sides, the thickness after polishing is about 1.5mm, and then conduct precise and controllable heat treatment in the differential...

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Abstract

The invention provides a nano glass ceramic up-conversion luminescent material and a preparation method thereof. The up-conversion luminescent material is a nano glass ceramic material which takes TiO2, La2O3 and ZrO2 as base components. The nano glass ceramic up-conversion luminescent material is heavy-metal oxide microcrystalline glass which has high mechanical strength, good temperature stability and good anti-corrosion performance; the nano glass ceramic up-conversion luminescent material has the advantages of low phonon energy, combination of high luminous efficiency of a crystal, easiness for glass preparation and the like, and is a novel up-conversion luminescent material. According to the preparation method of the nano glass ceramic up-conversion luminescent material, under the condition of no use of any glass forming agent, an air suspension container-free condensation technology is adopted to prepare novel heavy metal oxide block glass which cannot be easily obtained under normal conditions.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials, and relates to an up-conversion luminescent material and a preparation method thereof, in particular to a nano glass ceramic up-conversion luminescent material and a preparation method thereof. Background technique [0002] For the development of new high-performance optical fiber amplifiers, lasers and LED lighting devices, rare earth-doped upconversion luminescent materials have received more and more attention. The up-conversion effect is not limited by phase matching conditions, and the beam quality and stability are good. It is widely used in technical fields such as information processing, data storage, video display and surface treatment. For practical applications, upconversion materials not only require high luminous efficiency, but also good temperature, chemical stability and mechanical properties. The traditional up-conversion luminescent materials are mainly fluorides ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/02C09K11/78
Inventor 刘岩张明辉余建定潘秀红程愉悻
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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