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Eu(II) ion-doped single-phase full-spectrum-emission fluorescent powder as well as preparation method and application thereof

An ion doping and phosphor technology, applied in chemical instruments and methods, luminescent materials, electrical components, etc., can solve the problems of high pollution and poor reduction effect, and achieve high safety, high color rendering index and luminous efficiency. , the effect of pollution-free reduction effect

Inactive Publication Date: 2021-10-26
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is: phosphor reduction using hydrogen-nitrogen reduction or CO reduction has defects such as poor reduction effect and high pollution

Method used

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  • Eu(II) ion-doped single-phase full-spectrum-emission fluorescent powder as well as preparation method and application thereof
  • Eu(II) ion-doped single-phase full-spectrum-emission fluorescent powder as well as preparation method and application thereof
  • Eu(II) ion-doped single-phase full-spectrum-emission fluorescent powder as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] a kind of Eu 2+ A preparation method for ion-doped single-phase full-spectrum emission phosphor, comprising the following steps:

[0028] (1) According to Eu 2+ The general formula of ion-doped single-phase full-spectrum emitting phosphors: Ca 9 MgNa(PO 4 ) 7 :0.005Eu 2 + , Weigh 2 g of raw material powder. The mass ratio of each raw material powder is CaCO 3 : (MgCO 3 ) 4 ·Mg(OH) 2 ·5H 2 O:Na 2 CO 3 :NH 4 h 2 PO 4 :Eu 2 o 3 =0.9639:0.1044:0.0569:0.8660:0.0085.

[0029] (2) Put the above-mentioned raw material powder in an agate mortar and grind for 15 to 20 minutes. After the raw material powder is mixed evenly, put the mixture in a crucible, and place the crucible in a muffle furnace. Medium sintering for 10h.

[0030] (3) Take out the sintered sample, cool it, put it in an agate mortar and grind it into powder again to obtain a precursor.

[0031] (4) The precursor and the aluminum powder were weighed according to the mass ratio of 1:0.3, and 1 g...

Embodiment 2

[0036] a kind of Eu 2+ A preparation method for ion-doped single-phase full-spectrum emission phosphor, comprising the following steps:

[0037] (1) According to Eu 2+ The general formula of ion-doped single-phase full-spectrum emitting phosphors: Ca 9 MgNa(PO 4 ) 7 :0.01Eu 2 + , Weigh 2 g of raw material powder. The mass ratio of each raw material powder is CaCO 3 : (MgCO 3 ) 4 ·Mg(OH) 2 ·5H 2 O:Na 2 CO 3 :NH 4 h 2 PO 4 :Eu2 o 3 =0.9574:0.1043:0.0569:0.8644:0.0170.

[0038] (2) Put the above-mentioned raw material powder in an agate mortar and grind for 15 to 20 minutes. After the raw material powder is mixed evenly, put the mixture in a crucible, and place the crucible in a muffle furnace. Medium sintering for 10h.

[0039] (3) Take out the sintered sample, cool it, put it in an agate mortar and grind it into powder again to obtain a precursor.

[0040] (4) The precursor and the aluminum powder were weighed according to the mass ratio of 1:0.3, and 1 g of...

Embodiment 3

[0046] a kind of Eu 2+ A preparation method for ion-doped single-phase full-spectrum emission phosphor, comprising the following steps:

[0047] (1) According to Eu 2+ The general formula of ion-doped single-phase full-spectrum emitting phosphors: Ca 9 MgNa(PO 4 ) 7 :0.02Eu 2 + , Weigh 2 g of raw material powder. The mass ratio of each raw material powder is CaCO 3 : (MgCO 3 ) 4 ·Mg(OH) 2 ·5H 2 O:Na 2 CO 3 :NH 4 h 2 PO 4 :Eu 2 o 3 =0.9443:0.1039:0.0568:0.8613:0.0339.

[0048] (2) Put the above-mentioned raw material powder in an agate mortar and grind for 15 to 20 minutes. After the raw material powder is mixed evenly, put the mixture in a crucible, and place the crucible in a muffle furnace. Medium sintering for 10h.

[0049] (3) Take out the sintered sample, cool it, put it in an agate mortar and grind it into powder again to obtain a precursor.

[0050] (4) The precursor and the aluminum powder were weighed according to the mass ratio of 1:0.3, and 1 g ...

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Abstract

The invention discloses Eu(II) ion-doped single-phase full-spectrum-emission fluorescent powder as well as a preparation method and application thereof. The chemical general formula of the Eu<2+> ion-doped fluorescent powder is Ca9MgNa(PO4)7: xEu<2+>, wherein x is in a range of 0.005-0.02. The preparation method of the fluorescent powder comprises the following steps: weighing the raw material powder of the fluorescent powder according to a certain molar ratio and carrying out uniform grinding; then transferring the mixed raw material powder into a crucible, and conducting sintering at 900-1100 DEG C to obtain a fluorescent powder precursor; and weighing the precursor and reducing metal powder, placing the precursor and and reducing metal powder in two crucibles respectively, placing the crucibles in a vacuum tube furnace, and conducting reduction for 4-8 h at a temperature of 600-1000 DEG C. According to the invention, the full-spectrum-emission fluorescent powder with a spectrum range covering 400-to-750-nm visible light wave bands can be obtained, and the full-spectrum-emission fluorescent powder has the advantages of being high in quantum efficiency, high in color rendering index, high in safety, free of pollution and the like.

Description

technical field [0001] The invention relates to a single-phase full-spectrum emitting phosphor powder doped with Eu(II) ions, a preparation method and application thereof, and belongs to the technical field of luminescent materials. Background technique [0002] LED (Light Emitting Diode), as the latest generation of green lighting source in the 21st century, has the advantages of small size, low heat generation, low power consumption, long life, fast response, environmental protection, planar packaging, and easy development into thin and short products, etc. . At present, the main production method of white LED devices is to coat traditional yellow phosphor powder on blue LED chips, which has less red components in the emission spectrum and low color rendering index. Several other methods of generating white light, such as: "red chip + green chip + blue chip", "ultraviolet LED chip + blue phosphor + red phosphor + green phosphor", also due to low color rendering index and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/71H01L33/50
CPCC09K11/7738H01L33/502
Inventor 侯京山井硕房永征赵国营刘玉峰王安林燕丹
Owner SHANGHAI INST OF TECH
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