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Gd3Al5O12:Ce, Dy luminous film and preparing method

A technology of gd3al5o12 and luminescent film, which is applied in the field of Gd3Al5O12: Ce, can solve the problems of denseness and poor uniformity, reflection stability, rough surface of the screen, etc., and achieve the effect of strong adhesion, high thermal stability and low outgassing rate

Inactive Publication Date: 2006-05-24
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conductivity of the screen is not high due to the contact resistance between the particles
In addition, the problem of adhesion between particles and between particles and the substrate is also difficult to overcome
At the same time, the surface of the screen prepared by this method is rough, dense and poor in uniformity, which is easy to cause light reflection and has poor stability and low resolution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The raw material used in the present invention is Gd with a purity of 99.99%. 2 o 3 , Al 2 o 3 , Ce 2 o 3 , Dy 2 o 3 , the solvents are water and ethanol.

[0013] In the film Gd 3(1-x-y) Al 5 o 12 : Ce 3x , Dy 3y In the chemical expression of , the values ​​of x and y can also be in the following better ranges:

[0014] Wherein, 0.001

[0015] A better luminescent film can be expressed by the following chemical expression:

[0016] (1)Gd 2.79 Al 5 o 12 : Ce 0.18 , Dy 0.03 ;

[0017] (2)Gd 2.547 Al 5 o 12 : Ce 0.45 , Dy 0.003 .

[0018] In addition, in the specific embodiment of the luminescent film, the values ​​of x and y can also be determined according to the data in the list:

[0019] x

y

1

0.02

0.0002

2

0.08

0.002

3

0.1

0.005

4

0.2

0.03

5

0.4

0.06

[0020] Preparation of luminescent film ...

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Abstract

The invention relates to emitting film and the method to manufacture. The feature is that it adopts Na2CO3, LiCO3, Gd2O3, SiO2, Pr2O3, Eu2O3, Er2O3, Tm2O3, Ce2O3, Lu2O3, Nd2O3, Sm2O3 that the purity is 99.99% as raw material, and the solvent is water and alcohol. The invention has equal emitting film surface, compacting and no crazing, the particle is equal and the thickness could be controlled. The film has good emitting capability.

Description

【Technical field】 [0001] The present invention relates to luminescent physical material and display technology, especially a kind of Gd 3 Al 5 o 12 : Ce, Dy luminescent film and its preparation method. 【Background technique】 [0002] Display screens made of luminescent materials play a very important role in cathode ray tubes, electroluminescent and field emission display devices. At present, there are many obstacles in applying the display screen made of luminescent powder to field emission display. Due to the contact resistance between the particles, the conductivity of the screen is not high. In addition, the problem of adhesion between particles and between particles and the substrate is also difficult to overcome. At the same time, the surface of the screen prepared by this method is rough, dense and poor in uniformity, which is easy to cause light reflection and has poor stability and low resolution. Therefore, the preparation of luminescent films with excellent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/08C23C14/30C23C14/54
Inventor 张晓松李岚王达健
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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