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Zinc oxide-based light-emitting material and preparation method thereof

A luminescent material, zinc oxide-based technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of weak luminous brightness and low luminous efficiency, achieve low equipment requirements, improve internal quantum efficiency, enhance ultraviolet luminous intensity and The effect of glow brightness

Inactive Publication Date: 2011-12-28
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, as far as the current zinc oxide-based luminescent materials are concerned, there are still problems of weak luminous brightness and low luminous efficiency. Therefore, how to enhance the ultraviolet luminous intensity of the prepared zinc oxide thin film has always been an important issue in the field of materials science and microelectronics. Important Contents of Materials Research

Method used

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  • Zinc oxide-based light-emitting material and preparation method thereof
  • Zinc oxide-based light-emitting material and preparation method thereof
  • Zinc oxide-based light-emitting material and preparation method thereof

Examples

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preparation example Construction

[0021] see figure 1 , illustrating the process flow of the preparation method of the zinc oxide-based luminescent material according to the embodiment of the present invention, the preparation method includes the following steps:

[0022] S01, by chemical composition ZnO:M x The molar ratio of the elements in provides the source compound of zinc ions and metal particles M, and the value of x ranges from 0.00002 to 0.01;

[0023] S02, adding a stabilizer and metal particles M to the source compound of zinc ions, dissolving in a solvent, and stirring in a water bath at a temperature of 40-70°C for 4-8 hours to obtain a precursor solution;

[0024] S03, aging the resulting precursor solution at a temperature of 50-80°C for 56-90 hours to obtain a chemical composition of ZnO:M x colloid;

[0025] S04, ZnO: M x The colloid is heat-treated to form the zinc oxide-based luminescent material.

[0026] In step S01, the source compound of zinc ions is a soluble zinc salt, for exampl...

Embodiment 1

[0034] At room temperature, accurately weigh 2.1916g Zn(CH 3 COO) 2 2H 2 O, 0.64mL C 2 h 7 NO is placed in the container, add ethylene glycol methyl ether to 50mL, add 0.1ml of AgNO with a concentration of 0.01mol / L 3 Solution, after stirring for 4 hours in a water bath at 60°C, a clear precursor solution was obtained, which was aged in an oven at 50°C for 70 hours to form a uniform ZnO:Ag 0.0001 colloid.

[0035] Will get ZnO:Ag 0.0001 The colloid was spin-coated 6 times. After each coating, the film was dried in a 120°C oven for 15 minutes, and then the spin-coated film was placed in a temperature-programmed furnace at a rate of 3°C / min. 1000°C, heat preservation and sintering for 3 hours to obtain a luminescent film ZnO:Ag with a thickness of 1 micron 0.0001 .

[0036] Prepared ZnO with embodiment 1:Ag 0.0001 Take the thin film as an example, compare its luminous intensity with the ZnO thin film without adding metal particles. see figure 2 , showing the ZnO:Ag p...

Embodiment 2

[0038] At room temperature, accurately weigh 2.0444g ZnCl 2 2H 2 O, 4.32mL C 4 h 11 NO 2 Put it in a container, add a mixed solution of ethanol and water with a volume ratio of 3:1 to 50 mL, add 0.3 ml of Ag nanomicelle solution with a concentration of 0.001 mol / L, and stir for 8 hours in a water bath at 70 ° C to obtain a uniform Precursor solution of the obtained precursor solution was aged in an oven at 60°C for 70h to form a uniform ZnO:Ag 0.00002 colloid.

[0039] Will get ZnO:Ag 0.00002 The colloid was spin-coated 6 times, and after each coating, the film was dried in an oven at 100°C for 30 minutes. Put the spin-coated film in a temperature-programmed furnace to raise the temperature to 1200°C at a rate of 5°C / min, keep it warm and sinter for 2 hours to obtain a luminescent film ZnO:Ag with a thickness of 1 micron. 0.00002 .

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Abstract

The invention provides a zinc oxide-based luminescent material and a preparation method thereof. The zinc oxide-based luminescent material comprises a zinc oxide luminescent substrate and metal particles doped with the zinc oxide luminescent substrate; and the chemical composition of the zinc oxide-based luminescent material is represented by ZnO:Mx, wherein M represents the metal particles, x represents the molar ratio of the metal particles to the ZnO and ranges and the value of the x ranges from 0.00002 to 0.01. The zinc oxide-based luminescent material generates a plasma effect, can increase luminescent intensity and brightness and has a bright application prospect.

Description

technical field [0001] The invention belongs to the technical field of semiconductor materials, and in particular relates to a zinc oxide-based luminescent material and a preparation method thereof. Background technique [0002] ZnO, as a new type II-VI direct wide bandgap semiconductor material, has a high exciton binding energy of 60meV and a good C-axis preferred orientation hexagonal wurtzite structure at room temperature, and its larger forbidden band width is 3.37 eV has a wide luminous threshold range and good light and thermal stability, and is not easily oxidized in the atmosphere. These characteristics make it have the characteristics of working at room temperature or even higher temperature. In addition, zinc oxide also has the advantages of good electrical conductivity, strong radiation resistance, and easy film formation. However, as far as the current zinc oxide-based luminescent materials are concerned, there are still problems of weak luminous brightness and...

Claims

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Application Information

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IPC IPC(8): C09K11/54
Inventor 周明杰吕婷马文波
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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