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High-brightness PDP red fluorescent material, and its preparing method

A red fluorescence, high-brightness technology, used in luminescent materials, chemical instruments and methods, etc., can solve the problems of poor color purity and affecting the color rendering range of the picture.

Inactive Publication Date: 2009-11-18
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its color purity is poor, which affects the color rendering range of the picture

Method used

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  • High-brightness PDP red fluorescent material, and its preparing method
  • High-brightness PDP red fluorescent material, and its preparing method
  • High-brightness PDP red fluorescent material, and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Starting materials: yttrium oxide, europium oxide, bismuth oxide, boric acid

[0035] Raw materials are stoichiometrically ratio Y 0.9-x Bi x BO 3 :Eu 3+ (0≤x≤0.1) Accurately weighed, 10% of boric acid is excessive to supplement the loss of volatilization at high temperature. After grinding and mixing the raw materials evenly, first keep warm at 400-600°C for 2.5 hours, and then keep warm at 1000-1200°C for 3 hours hour, the product Y was obtained 0.9-x Bi x BO 3 :Eu3+ (0≤x≤0.1).

Embodiment 2

[0037] Starting materials: yttrium oxide, europium oxide, lanthanum oxide, boric acid

[0038] Raw materials are stoichiometrically ratio Y 0.9-x La x BO 3 :Eu 3+ (0≤x≤0.1) Accurately weighed, 10% of boric acid is excessive to supplement the loss of volatilization at high temperature. After grinding and mixing the raw materials evenly, first keep warm at 400-600°C for 2.5 hours, and then keep warm at 1000-1200°C for 3 hours hour, the product Y was obtained 0.9-x La x BO 3 :Eu 3+ (0≤x≤0.1).

Embodiment 3

[0040] Starting materials: yttrium oxide, europium oxide, scandium oxide, boric acid

[0041] Raw materials are stoichiometrically ratio Y 0.9-x sc x BO 3 :Eu 3+ (0≤x≤0.1) accurately weighed, wherein boric acid is over 10% to supplement the loss of volatilization at high temperature. After grinding and mixing the raw materials evenly, first keep warm at 400-600°C for 2.5 hours, and then keep warm at 1000-1200°C for 3 hours to obtain the product Y 0.9-x sc x BO 3 :Eu 3+ (0≤x≤0.1).

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Abstract

The invention relates to PDP luminescent material and its manufacturing method, concretely to red luminescent material which contains europium, yttrium, gadolinium, and borate. The molecule general expression of the luminescent material is Y0.9-xMxBO3:Eu3+(M=La, Sc, Bi, 0<=x<=0.1). After introducing Gd ion as the improvement, it can be (Y, Gd)0.9-xMxBO3:Eu3+(M=La, Sc, Bi, 0<=x<=0.1).

Description

technical field [0001] The invention relates to a PDP luminescent material and a preparation method of the material. Specifically, the invention relates to a europium-doped yttrium, gadolinium and borate red fluorescent material and a preparation method thereof. Background technique [0002] Plasma display (PDP) is a new display device. Compared with commonly used CRT display and LCD display, PDP display has many advantages such as wide viewing angle, large area, light weight, good contrast, fast response, no distortion, vibration and shock resistance, etc. Advantages, so PDP displays have great application prospects. The two key parts of PDP display are devices and luminescent materials. With the increasing improvement of device design, the selection of luminescent materials has become the most critical technology for PDP display. In the PDP, the vacuum ultraviolet radiation (VUV) emitted by the plasma gas (Xe) is used to excite the phosphor to emit red, green, and blue pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/78
Inventor 王育华王灵利
Owner LANZHOU UNIVERSITY
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