Yttrium oxide light-emitting element and its preparation method

A light-emitting element, yttrium oxide technology, applied in chemical instruments and methods, light-emitting materials, etc., can solve the problem that the light-emitting film is not high enough, and achieve the effects of short preparation cycle, high luminous intensity, and improved internal quantum efficiency

Inactive Publication Date: 2011-12-07
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

[0003] The technical problem to be solved by the present invention is that for Y in the prior art 2 o 3 : Defects that the Eu light-emitting film is not high enough to provide a yttrium oxide light-emitting element with high luminous intensity

Method used

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  • Yttrium oxide light-emitting element and its preparation method
  • Yttrium oxide light-emitting element and its preparation method
  • Yttrium oxide light-emitting element and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0027] At room temperature, accurately weigh 10.7260g Y 2 o 3 and 0.8798g Eu 2 o 3 Dissolve it in 27mL of hydrochloric acid under the condition of stirring at 60°C, add deionized water to 100mL, and prepare an aqueous solution containing 1mol / L Y and Eu with 5% Eu doping. Measure 8 mL of the above aqueous solution containing 1 mol / L of Y and Eu, add 32 mL of absolute ethanol as a solvent, add 6.1485 g of citric acid and 5 g of polyethylene glycol 6000, and stir for 4 hours in a water bath at 60 ° C to obtain a clear Y , Eu precursor solution. Then the obtained Y and Eu precursor solution was aged in an oven at 70° C. for 60 h to form a uniform Y and Eu mixed colloid. The obtained Y and Eu mixed colloids were spin-coated 6 times. After each coating, the film was dried in an oven at 120°C for 15 minutes, and then the spin-coated film was placed in a temperature-programmed oven at 3°C. / min heating rate to 1000°C and hold for 3 hours to obtain Y with a thickness of 1 μm 2 o...

Embodiment 2

[0031] 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 configured as 100 mL of an aqueous solution containing 1 mol / L of Y and Eu doped with 1% Eu. Measure 20 mL of the above aqueous solution containing 1 mol / L Y and Eu, add 20 mL of absolute ethanol as a solvent, add 15.3712 g of citric acid and 5 g of polyethylene glycol 20000, and stir for 4 hours in a water bath at 60 ° C to obtain a clear Y , Eu precursor solution. Then the obtained Y and Eu precursor solutions were aged in an oven at 80° C. for 56 hours to form a uniform Y and Eu mixed colloid. The obtained Y and Eu colloids were spin-coated three times, and after each coating, the film was dried in an oven at 150° C. for 5 minutes. The spin-coated film was placed in a temperature-programmed furnace to raise the temperature to 700°C at a rate of 1°C / min and hold it for 3 hours to obtain a Y film with a thickness of 100 μm. 2 o ...

Embodiment 3

[0034] Y was prepared by magnetron sputtering 2 o 3 :Eu luminescent film, using electron beam evaporation equipment in Y 2 o 3 : Deposit a metal palladium layer with a thickness of 1nm on the surface of the Eu luminescent film, and then place it in a vacuum of 1×10 -5 Annealing at 200°C for 180min in a vacuum environment of Pa, and then cooling to room temperature to obtain a yttrium oxide light-emitting element with a palladium layer having a metal micro-nano structure formed on the surface.

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Abstract

The invention discloses an yttria light-emitting element and a preparation method thereof. The yttria light-emitting element comprises a Y2O3:Eu light-emitting film, a metal layer positioned on the surface of the Y2O3:Eu light-emitting film, wherein the metal layer has a metal micro-nano structure. The preparation method comprises the following steps: forming the metal layer on the surface of theY2O3:Eu light-emitting film; carrying out an annealing process for the Y2O3:Eu light-emitting film and the metal layer in a vacuum environment to enable the metal layer to form the metal micro-nano structure. The yttria light-emitting element provided by the present invention has high light-emitting intensity; the preparation method has characteristics of simple process, short preparation period and the like.

Description

technical field [0001] The invention relates to the technical field of luminescent materials, in particular to an yttrium oxide luminescent element and a preparation method thereof. Background technique [0002] Y 2 o 3 :Eu red phosphor is widely used due to its high luminous intensity, high color purity, and good stability. However, for device applications, the conductivity of the powder screen is not high due to the contact resistance between the phosphor particles. , and it is not easy to control the quality of phosphor coating process, and the adhesion performance between phosphor and substrate is not ideal, which directly affects Y 2 o 3 : Luminescence uniformity and service life of Eu red phosphor. with Y 2 o 3 :Eu red phosphor compared to Y 2 o 3 :Eu luminescent film has good luminescence uniformity, stability and excellent adhesion to the substrate, and has more advantages in device applications. However, Y 2 o 3 :Eu luminescent film also has the problem o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78
Inventor 周明杰吕婷王烨文马文波
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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