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Vacuum ultraviolet excited green borate luminous material and preparation process thereof

A technology of vacuum ultraviolet and luminescent materials, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems that are difficult to be widely used, and achieve the effects of controllable shape, low reaction temperature, and no agglomeration phenomenon

Inactive Publication Date: 2006-11-29
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ultrasonic pyrolysis requires special equipment, making widespread use difficult

Method used

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  • Vacuum ultraviolet excited green borate luminous material and preparation process thereof
  • Vacuum ultraviolet excited green borate luminous material and preparation process thereof
  • Vacuum ultraviolet excited green borate luminous material and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Starting materials: yttrium nitrate, terbium nitrate, boric acid.

[0028] By stoichiometric ratio Y 1-x Tb x BO 3 (0≤x≤0.26) Accurately weigh each component. Dissolve the raw materials in distilled water, transfer the mixed solution to a small stainless steel reaction kettle lined with polytetrafluoroethylene, add distilled water, and react at 260°C for 6 hours, then centrifuge, wash, separate and dry the product to obtain Flake target product Y 1-x Tb x BO 3 (0≤x≤0.26), and its luminous intensity is 10% higher than that of the luminescent material prepared by high-temperature solid-phase method.

Embodiment 2

[0030] Initial raw materials: yttrium nitrate, terbium nitrate, tributyl borate; solvent: distilled water: ethanol = 1:2 (volume ratio); hydrolysis catalyst: ammonia water.

[0031] By stoichiometric ratio Y 1-x Tb x BO 3 (0≤x≤0.26) Accurately weigh each component, and then add it into the mixed solution of water and ethanol, and the volume ratio of water and ethanol is 1:2. After the system is mixed, add a hydrolysis catalyst to the solution, disperse the reaction system in the ultrasonic wave, and then move it into a small stainless steel reaction kettle with a polytetrafluoroethylene lining, and keep it at 260°C for 6 hours. Wash with absolute ethanol and distilled water, and finally filter and dry at 100°C to obtain spherical target product Y 1-x Tb x BO 3 (0≤x≤0.26).

Embodiment 3

[0033] Initial raw materials: nitrates of yttrium, gadolinium, terbium, scandium and cerium and tributyl borate; solvent: distilled water: ethanol = 1:2 (volume ratio); hydrolysis catalyst: ammonia water. ,

[0034] According to the stoichiometric ratio (Y 1-w-x-y-z Gd w sc x Tb y Ce z )BO 3 (0.0≤w≤0.5, 0.0≤x≤0.1, 0.0≤y≤0.26, 0.0≤z≤0.1) Accurately weigh each component, add it to the mixture of water and ethanol, the volume ratio of water and ethanol is 1 : 2. After the system is mixed, add a hydrolysis catalyst to the solution, disperse the reaction system in the ultrasonic wave, and then move it into a small stainless steel reaction kettle with a polytetrafluoroethylene lining, and keep it at 260°C for 6 hours. Wash with absolute ethanol and distilled water, finally filter and dry at 100°C to obtain spherical target product (Y 1-w-x-y-z Gd w sc x Tb y Ce z )BO 3 (0.0≤w≤0.5, 0.0≤x≤0.1, 0.0≤y≤0.26, 0.0≤z≤0.1), the product has high luminous efficiency under 147nm ex...

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Abstract

The invention provides a new preparing method for Y1-xTbxBO3, relating to a new vacuum UV excited green borate luminous material (Y1-w-x-y-zGdwScxTbyCez)BO3, where 0.0<=w<=0.5, 0.0<=x<=1.0, 0.0<=y<=0.26, and 0.0<=z<=0.1. under the excitation of UV light or vacuum UV light, it has better light-emitting property as compared with existing Y1-xTbxBO3. The method: it adds various rare-earth soluble salts and raw materials providing B (boric acid or borate, etc) in water or water-alcohol solution, adding hydrolyst or not in the reacting system, reacting for several hours at 250 deg.C-300 deg.C, centrifuging the product, washing, separating and drying to obtain the object product. The advantages are low reacting temperature; simple process; the size and shape of the obtained product can be controlled, and especially, it can obtain uniform spherical product; the obtained product need not be processed by grinding any more; etc.

Description

technical field [0001] The invention relates to a green borate luminescent material Y excited by vacuum ultraviolet 1-X Tb X BO 3 (0.0≤x≤0.26) preparation method, and disclosed for Y 1-X Tb X BO 3 Improvement has obtained a new type of luminescent material, its general formula is: (Y 1-w-x-y-z Gd w sc x Tb y Ce z )BO 3 (0.0≤w≤0.5, 0.0≤x≤0.1, 0.0≤y≤0.26, 0.0≤z≤0.1). Background technique [0002] Plasma display (PDP) is an emerging display device. Compared with commonly used CRT displays and LCD displays, PDP displays have wide viewing angles, large areas, light weight, good contrast, fast response, no distortion, vibration and shock resistance, etc. Many advantages, so the PDP display has a great application prospect. The two key parts of PDP display are circuit and luminescent material. With the improvement of circuit design, the selection of luminescent material has become the most critical technology of PDP display. The three primary colors currently used in P...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/78
Inventor 王育华张加驰何玲
Owner LANZHOU UNIVERSITY