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Europium doped aluminosilicate luminescent material, luminescent film and film electroluminescent display device as well as preparation methods thereof

A technology of aluminosilicate and luminescent materials, applied in luminescent materials, chemical instruments and methods, electrical components, etc.

Inactive Publication Date: 2013-09-11
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of electroluminescent thin films with aluminosilicate luminescent materials has not been reported so far.

Method used

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  • Europium doped aluminosilicate luminescent material, luminescent film and film electroluminescent display device as well as preparation methods thereof
  • Europium doped aluminosilicate luminescent material, luminescent film and film electroluminescent display device as well as preparation methods thereof
  • Europium doped aluminosilicate luminescent material, luminescent film and film electroluminescent display device as well as preparation methods thereof

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Experimental program
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Effect test

Embodiment 1

[0036] A method for preparing a thin film electroluminescent display device, comprising the following steps:

[0037] (1) Preparation of luminescent material: SrO and Al with a purity of 99.99% were weighed 2 o 3 , SiO 2 and Eu 2 o 3 Powder, the molar ratio is 1:0.99:2:0.01 (that is, 1:1-x / 2:2:x / 2, x value is 0.02), after uniform mixing, it is sintered at 1250°C to make Φ50×2mm luminescent materials;

[0038] (2) Prepare the substrate: take the glass substrate with ITO, and use acetone, absolute ethanol and deionized water to carry out ultrasonic cleaning on the glass substrate with ITO in sequence, then perform oxygen plasma treatment, and dry to obtain a clean Substrate;

[0039] (3) Coating: According to the pulse laser deposition method, install the luminescent material and the clean substrate in the vacuum chamber of the pulse laser system, the distance between the luminescent material and the substrate is 60mm, and then use a mechanical pump and a molecular pump to...

Embodiment 2

[0045] A method for preparing a thin film electroluminescent display device, comprising the following steps:

[0046] (1) Preparation of luminescent material: take MgO with a purity of 99.99%, Al 2 o 3 , SiO 2 and Eu 2 o 3 Powder, the molar ratio is 1:0.99:2:0.01 (that is, 1:1-x / 2:2:x / 2, x value is 0.02), after uniform mixing, it is sintered at 1250°C to make Φ50×2mm luminescent materials;

[0047] (2) Prepare the substrate: take the glass substrate with ITO, and use acetone, absolute ethanol and deionized water to carry out ultrasonic cleaning on the glass substrate with ITO in sequence, then perform oxygen plasma treatment, and dry to obtain a clean Substrate;

[0048] (3) Coating: According to the pulse laser deposition method, install the luminescent material and the clean substrate in the vacuum chamber of the pulse laser system, the distance between the luminescent material and the substrate is 60mm, and then use a mechanical pump and a molecular pump to vacuum Th...

Embodiment 3

[0053] A method for preparing a thin film electroluminescent display device, comprising the following steps:

[0054] (1) Preparation of luminescent material: take MgO with a purity of 99.99%, Al 2 o 3 , SiO 2 and Eu 2 o 3 Powder, the molar ratio is 1:0.975:2:0.025 (i.e. 1:1-x / 2:2:x / 2, x value is 0.05), after uniform mixing, it is sintered at 900°C to make Φ50×2mm luminescent materials;

[0055] (2) Prepare the substrate: take the glass substrate with ITO, and use acetone, absolute ethanol and deionized water to carry out ultrasonic cleaning on the glass substrate with ITO in sequence, then perform oxygen plasma treatment, and dry to obtain a clean Substrate;

[0056] (3) Coating: According to the pulse laser deposition method, install the luminescent material and the clean substrate in the vacuum chamber of the pulse laser system, the distance between the luminescent material and the substrate is 45mm, and then use a mechanical pump and a molecular pump to vacuum The c...

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Abstract

The invention provides a europium doped aluminosilicate luminescent material, a luminescent film and a film electroluminescent display device as well as preparation methods thereof. The europium doped aluminosilicate luminescent material has a chemical structural formula of MeAl2-xSi2O8:xEu<3+>, wherein MeAl2-xSi2O8 is a matrix, Eu is an activated element, Me is selected from one or more of Mg, Ca, Sr, Zn and Ba, and the value of x is 0.01-0.05. The europium doped aluminosilicate luminescent material can be used for preparing a europium doped aluminosilicate luminescent film. The europium doped aluminosilicate luminescent film can be used for preparing the film electroluminescent display device. The electroluminescent spectrum of the europium doped aluminosilicate luminescent film has strong photoluminescence peaks around 580nm and 620nm.

Description

technical field [0001] The invention belongs to the field of electroluminescent materials, and in particular relates to europium-doped aluminosilicate luminescent materials, luminescent thin films and thin-film electroluminescent display devices and their preparation methods. Background technique [0002] Thin film electroluminescent display (TFELD) has attracted widespread attention and developed rapidly because of its advantages such as active light emission, full solid state, impact resistance, fast response, large viewing angle, wide application temperature and simple process. At present, the research and development of color and even full-color TFELD (development of multi-band luminescent materials) is an important development direction in this field. [0003] In the research of LED phosphors, there have been reports of rare earth-doped aluminosilicate phosphors, whose excitation spectrum can better match the emission spectrum of existing near-ultraviolet LEDs to obtain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/64H01L33/50
Inventor 周明杰王平陈吉星黄辉
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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