A rare earth elements doping on yttrium oxide luminescent thin film containing conductive oxides and preparation methods thereof

A technology of conductive oxides and rare earth elements, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of difficult control of the phosphor coating process, reduce the luminous efficiency of the phosphors, and affect the service life of the phosphors, and improve the electrical conductivity. The performance is not high, the luminous performance is improved, and the cost is low.

Inactive Publication Date: 2014-11-05
OCEANS KING LIGHTING SCI&TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most of the fluorescent materials used are oxides and sulfur oxide powders activated by zinc sulfide and rare earth ions. For sulfide phosphors, they have certain conductivity and high luminous brightness. It is easy to decompose under bombardment, which reduces the luminous efficiency of phosphors; oxide phosphors have good stability, but their luminous efficiency is not high enough under low-voltage electron beam bombardment, and the materials are all non-conductive insulators, and the conductivity needs to be improved and improved.
At the same time, the phosphor coating process is not easy to control, and its adhesion to the substrate is not ideal, which directly affects the service life of the phosphor. 2 o 3 : Re is a widely used phosphor, and how to make it into a thin film so that the prepared fluorescent film has good uniformity, stability and excellent adhesion to the substrate has always been an important issue in the fields of material chemistry and material physics. Important Contents of Research on Rare Earth Luminescent Materials

Method used

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  • A rare earth elements doping on yttrium oxide luminescent thin film containing conductive oxides and preparation methods thereof
  • A rare earth elements doping on yttrium oxide luminescent thin film containing conductive oxides and preparation methods thereof

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preparation example Construction

[0021] see figure 1 , figure 1 The flow chart of the preparation method of the yttrium oxide luminescent thin film containing conductive oxide doped with rare earth elements of the present invention is shown, and the preparation method includes the following steps:

[0022] Step S01: preparing a colloid containing rare earth elements yttrium and europium or a colloid containing rare earth elements yttrium and terbium;

[0023] Step S02: Prepare conductive oxide Zn 1-x al x O (AZO) colloid;

[0024] Step S03: mixing the colloid in step S01 and the colloid in step S02 to form a mixed colloid;

[0025] Step S04: The mixed colloid coating of step S03 is obtained to contain conductive oxide Zn 1-x al x O doped rare earth element yttrium oxide luminescent film.

[0026] In the preparation method of the present invention, in the step S01, a compound of yttrium and europium or a compound of yttrium and terbium is selected and configured to form a doping concentration of europiu...

Embodiment 1

[0033] At room temperature, accurately weigh 18.7675g Y(NO 3 ) 3 ·6H 2 O and 0.4461g Eu(NO 3 ) 3 ·6H 2 O was dissolved in deionized water, and 100 mL of 0.5 mol / L Y and Eu aqueous solution doped with 2% Eu was prepared. Measure 8 mL of Y and Eu aqueous solutions with a concentration of 0.50 mol / L, add 32 mL of absolute ethanol as a solvent, add 7.6856 g of citric acid and 2 g of polyethylene glycol 8000, and stir for 6 hours in a water bath at 40 ° C to obtain a clear Y , Eu precursor solution, and aging the obtained precursor solution in an oven at 90°C for 60 hours to form a uniform colloid containing Y and Eu.

[0034] At room temperature, accurately weigh 0.5460g Zn(CH 3 COO) 2 2H 2 O, 0.0047g Al(NO 3 ) 3 9H 2 O and 0.4mL C 6 h 15 o 3 N is placed in a container, and a mixed solution of ethanol and water with a volume ratio of 4:1 is added to 50mL, and after stirring for 5h in a water bath at 40°C, a uniform precursor solution is obtained, and the obtained pre...

Embodiment 2

[0038] At room temperature, accurately weigh 37.9180g Y(NO 3 ) 3 ·6H 2 O and 0.4441g Eu(NO 3 ) 3 ·6H 2 O was dissolved in deionized water, and 100 mL of 1 mol / L Y and Eu aqueous solution doped with 1% Eu were prepared. Measure 4 mL of Y and Eu aqueous solution with a concentration of 1 mol / L, add 1 mL of deionized water and 35 mL of absolute ethanol as a solvent, add 3.0742 g of citric acid and 5 g of polyethylene glycol 10000, and stir for 4 h under the condition of a water bath at 60 ° C. A clear Y and Eu precursor solution was obtained, and the obtained precursor solution was aged in an oven at 90° C. for 40 h to form uniform Y and Eu colloids.

[0039] At room temperature, accurately weigh 2.1292g Zn(CH 3 COO) 2 2H 2 O, 0.1125g Al(NO 3 ) 3 9H 2 O and 0.6mL C 2 h 7 NO was placed in a container, and ethylene glycol methyl ether was added to 50 mL. After stirring for 4 hours in a water bath at 60°C, a clear precursor solution was obtained. The obtained precursor ...

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Abstract

A rare earth elements doping on yttrium oxide luminescent thin film containing conductive oxides and preparation methods thereof are provided. The said luminescent thin film is consisted of Y 2 O 3 : Re, Zn 1-x Al x O, wherein 0 < x‰¤0.05, Re=Eu or Tb. The said methods include the following steps: step 1, preparing colloid of Y and Eu or colloid of Y and Tb; step 2, preparing colloid of Zn 1-x Al x O; step 3, mixing the colloid in step 1 and the colloid in step 2 to form complex colloid; step 4, coating the complex colloid in step 3 to form the luminescent thin film. The said luminescent thin film increases the conductivity and luminescent property of yttrium oxide luminescent thin film in the art.

Description

technical field [0001] The invention relates to a luminescent material with high luminous brightness and a preparation method thereof, in particular to a yttrium oxide luminescent thin film containing conductive oxide doped with rare earth elements and a preparation method thereof. Background technique [0002] In recent years, with the development and application of high-quality display and lighting devices more and more widely in work and life, high-efficiency and long-life luminescent materials have become more and more important materials. At present, most of the fluorescent materials used are oxides and sulfur oxide powders activated by zinc sulfide and rare earth ions. For sulfide phosphors, they have certain conductivity and high luminous brightness. It is easy to decompose under bombardment, which reduces the luminous efficiency of phosphors; oxide phosphors have good stability, but their luminous efficiency is not high enough under low-voltage electron beam bombardm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/54C09K11/78
CPCC09K11/7784C04B41/81C04B35/453C09K11/7767C04B41/4519
Inventor 周明杰吕婷马文波
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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