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Method for preparing rare earth ion Tm3+ and ZnO nanocrystalline codoping alumina silicate glass as well as products and application thereof

A technology of aluminosilicate glass and rare earth ions, which is applied in the field of preparation of aluminosilicate glass co-doped with rare earth ions Tm3+ and ZnO nanocrystals, which can solve the problems of poor color temperature stability, complex manufacturing process, and low color rendering index of white LEDs. problem, to achieve the effect of low raw material cost, simple equipment and simple preparation method

Active Publication Date: 2016-10-12
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of white LED has the disadvantages of low color rendering index, poor color temperature stability, short service life caused by packaging resin, and complicated manufacturing process.

Method used

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  • Method for preparing rare earth ion Tm3+ and ZnO nanocrystalline codoping alumina silicate glass as well as products and application thereof
  • Method for preparing rare earth ion Tm3+ and ZnO nanocrystalline codoping alumina silicate glass as well as products and application thereof
  • Method for preparing rare earth ion Tm3+ and ZnO nanocrystalline codoping alumina silicate glass as well as products and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Put silicon oxide, aluminum oxide, potassium carbonate, zinc oxide, and thulium oxide powder into an agate mortar, mix well and pour into a 30ml crucible, the moles of silicon dioxide, aluminum oxide, potassium carbonate, zinc oxide, and thulium oxide The ratio is 44:11:10:35:0.05;

[0026] 2) Put the crucible in step 1) into a high-temperature furnace, heat up to 1500°C at a heating rate of 7°C / min, keep warm for 2 hours to melt, pour the molten glass on a copper plate or graphite plate at 300°C and cool to room temperature to obtain quenching Glass;

[0027] 3) Then put the tempered glass into a muffle furnace, raise the temperature to 600°C at a heating rate of 3°C / min, and then keep it at 600°C for 2 hours to obtain annealed glass;

[0028] 4) Heat-treat the annealed glass at 750°C for 5 minutes to obtain rare earth ion Tm 3+ Aluminosilicate glass co-doped with ZnO nanocrystals.

[0029] figure 1 Middle curve a is the X-ray diffraction pattern of the annealed...

Embodiment 2

[0033] 1) Put silicon oxide, aluminum oxide, potassium carbonate, zinc oxide, and thulium oxide powder into an agate mortar, mix well and pour into a 30ml crucible, the moles of silicon dioxide, aluminum oxide, potassium carbonate, zinc oxide, and thulium oxide The ratio is 44:11:10:35:0.01;

[0034] 2) Put the crucible in step 1) into a high-temperature furnace, heat up to 1500°C at a heating rate of 8°C / min, keep warm for 2 hours to melt, pour the molten glass on a copper plate or graphite plate at 400°C and cool to room temperature to obtain quenching Glass;

[0035] 3) Then put the tempered glass into a muffle furnace, raise the temperature to 600°C at a heating rate of 4°C / min and then keep it at 600°C for 2 hours to obtain annealed glass;

[0036] 4) Heat-treat the annealed glass at 750°C for 5 minutes to obtain rare earth ion Tm 3+ Aluminosilicate glass co-doped with ZnO nanocrystals.

[0037] figure 2 Middle curve c is the rare earth ion Tm prepared in this embodi...

Embodiment 3

[0040] 1) Put silicon oxide, aluminum oxide, potassium carbonate, zinc oxide, and thulium oxide powder into an agate mortar, mix well and pour into a 30ml crucible, the moles of silicon dioxide, aluminum oxide, potassium carbonate, zinc oxide, and thulium oxide The ratio is 44:11:10:35:0.005;

[0041] 2) Put the crucible in step 1) into a high-temperature furnace, heat up to 1500°C at a heating rate of 9°C / min, keep warm for 2 hours to melt, pour the molten glass on a copper plate or graphite plate at 500°C and cool to room temperature to obtain quenching Glass;

[0042] 3) Then put the tempered glass into a muffle furnace, raise the temperature to 600°C at a heating rate of 5°C / min and then keep it at 600°C for 2 hours to obtain annealed glass;

[0043] 4) Heat-treat the annealed glass at 750°C for 5 minutes to obtain rare earth ion Tm 3+ Aluminosilicate glass co-doped with ZnO nanocrystals.

[0044] figure 2 Middle curve d is the rare earth ion Tm prepared in this embod...

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Abstract

The invention discloses a method for preparing rare earth ion Tm<3+> and ZnO nanocrystalline codoping alumina silicate glass. The method comprises the following steps: firstly mixing silicon oxide, aluminum oxide, potassium carbonate, zinc oxide and thulium oxide, heating and melting the mixture, and pouring the molten mixture on a copper plate or a graphite plate to cool to room temperature, thereby obtaining quenched glass, wherein the mole rate of the silicon oxide to the aluminum oxide to the potassium carbonate to the zinc oxide to the thulium oxide is 44:11:10:35:(0.005-0.05); keeping the temperature of the quenched glass, thereby obtaining annealed glass; and performing a heat treatment on the annealed glass, thereby obtaining the rare earth ion Tm<3+> and ZnO nanocrystalline codoping alumina silicate glass. The method for preparing the rare earth ion Tm<3+> and ZnO nanocrystalline codoping alumina silicate glass, provided by the invention, has the advantages of simple and convenient process and low cost, and the prepared products can achieve common emission of white lights.

Description

technical field [0001] The invention relates to the field of preparation of aluminosilicate glass, in particular to a method for preparing rare earth ion Tm 3+ A method of aluminosilicate glass co-doped with ZnO nanocrystals and its products and applications. Background technique [0002] Compared with traditional lighting materials, white LEDs have the characteristics of high luminous efficiency, low energy consumption, fast response, and long life. At present, the preparation of commercial white LEDs mainly utilizes GaN chips with blue light emission and YAG:Ce phosphors with yellow light emission through resin encapsulation. This type of white light LED has the disadvantages of low color rendering index, poor color temperature stability, short service life caused by packaging resin, and complicated manufacturing process. [0003] Due to the characteristics of stable physical and chemical properties, simple preparation process and easy preparation into various shapes, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/062C03C6/04C03C4/12
CPCC03C1/00C03C3/062C03C4/12
Inventor 赵高凌詹凌曈覃辉军和阿雷韩高荣
Owner ZHEJIANG UNIV
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