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Luminescent film and its preparation method and use

A luminescent film and thin film technology, applied in luminescent materials, chemical instruments and methods, image/graphic display tubes, etc., can solve the problems of poor density and uniformity, reflection stability, low electrical conductivity, etc., and achieve strong adhesion, heat High stability and uniform surface effect

Inactive Publication Date: 2005-06-29
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

[0016] The chemical expression of luminescent thin film of the present invention is: (by molar ratio)

[0017] Y 3(1-x-y) (Al z Ga (1-z) ) 5 o 12 :Tb 3x , A 3y

[0018] Among them: 0.0001

[0019] 0.0001

[0020] 0≤z≤1;

[0021] A can be Gd or Ce, Nd, Tm, Pr, or a combination of any two of them.

[0022] The raw material used in the present invention, selects the Y that the purity is 99.99% for use 2 o 3 , Tb 2 o 3 , Ga 2 o 3 , Al 2 o 3 , Gd 2 o 3 , Ce 2 o 3 ,Nd 2 o 3 , Tm 2 o 3 , Pr 2 o 3 . The solvent is water or ethanol.

[0023] In the film Y 3(1-x-y) (Al z Ga (1-z) ) 5 o 12 :Tb 3x , A 3y In chemical expressions, the values ​​of x, y, and z can also be in the following ranges:

[0024] 0.0001

[0025] 0.0001

[0026] 0≤z≤1.

[0027] Or the value of x, y, z is in the following range:

[0028] 0.1

[0029] 0.1

[0030] 0≤z≤1.

[0031] A better luminescent film can be expressed by the follow...

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PUM

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Abstract

The invention include a lightening film and its preparing method and application. The chemical formula of lightening film: Y3(1-x-y)(AlzGa(1-z))5O12:Tb3x, A3y, 0.0001<x íœ0.3; 0.0001<yíœ0.3; 0íœzíœ1; A=Ce, Nd, Tm, Pr or mix of the two elements. Its preparing method is: burn the material for making target according to need, use electron beam evaporation coating to grow lightening film on the washed substrate and the time for growth id decided by speed and width of growth, finally place the film into program furnace to be heated to reach 500-700deg.C by the speed of 100deg.C / h, and kept for 2-3h. The lightening film prepared by the invention has average and compact surface without crack, average size of particle, and its width can be controlled, with outstanding lightening performance.

Description

【Technical field】 [0001] The invention relates to luminescent physical materials and display technology, in particular to a luminescent thin film and its preparation method and application. 【technical background】 [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 properties has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/80H01J31/12
Inventor 李岚张晓松
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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