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Magnesium aluminum phosphate fluorescent powder co-doped with europium ion and manganese ion and preparation method thereof

A technology of aluminum magnesium phosphate and manganese ions, which is applied in the field of fluorescent materials, can solve the problems of high cost of preparation methods, narrow fluorescent pink range, complexity and the like, and achieves the effects of simple preparation method, wide emission band, and reduced collocation.

Inactive Publication Date: 2011-12-14
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a magnesium aluminum phosphate fluorescent powder co-doped with europium ions and manganese ions for the existing near-ultraviolet LED lighting fluorescent pink area is narrow, need a variety of fluorescent powder compound, high cost and complicated preparation method And preparation method thereof, realize by following technical scheme

Method used

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  • Magnesium aluminum phosphate fluorescent powder co-doped with europium ion and manganese ion and preparation method thereof
  • Magnesium aluminum phosphate fluorescent powder co-doped with europium ion and manganese ion and preparation method thereof
  • Magnesium aluminum phosphate fluorescent powder co-doped with europium ion and manganese ion and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0021] (1) According to Mg ion: Eu ion: Mn ion: AlPO 4 The molar ratio is 0.99:0.005:0.005:1, MgO, AlPO 4 、Eu 2 o 3 , MnCO 3 , to mix;

[0022] (2) Heat the mixture obtained in step (1) to 1400°C, keep it warm for 0.5 hours, and then cool it naturally;

[0023] (3) Place the mixture obtained in step (2) in an environment of CO reducing gas, and keep it warm for 0.5 hours at 1300 ° C. After natural cooling, the chemical composition formula is Mg 0.99 Eu 0.005 mn 0.005 Al(PO 4 ) Aluminum magnesium phosphate phosphor co-doped with europium ions and manganese ions of O.

Embodiment 2

[0025] (1) According to Mg ion: Eu ion: Mn ion: AlPO 4 The molar ratio is 0.897:0.003:0.1:1, take MgCO 3 , AlPO 4 、Eu 2 o 3 , MnCO 3 , to mix;

[0026] (2) Heat the mixture obtained in step (1) to 1300°C, keep it warm for 2 hours, and then cool it naturally;

[0027] (3) Place the mixture obtained in step (2) in H 2 +N 2 Under the environment of reducing gas, keep warm at 1200°C for 1 hour, and after natural cooling, the chemical composition formula is Mg 0.897 Eu 0.003 mn 0.1 Al(PO 4 ) Aluminum magnesium phosphate phosphor co-doped with europium ions and manganese ions of O.

Embodiment 3

[0029] (1) According to Mg ion: Eu ion: Mn ion: AlPO 4 The molar ratio is 0.898:0.1:0.002:0.9, take Mg(HCO 3 )OH, AlPO 4 、Eu 2 o 3 , MnCO 3 , to mix;

[0030] (2) Place the mixture obtained in step (1) in H 2 +N 2 Under the environment of reducing gas, raise the temperature to 1300°C and keep it warm for 2 hours. After natural cooling, the chemical composition formula is Mg 0.898 Eu 0.1 mn 0.002Al(PO 4 ) 0.9 Magnesium aluminum phosphate phosphor co-doped with europium ions and manganese ions of O.

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Abstract

The invention provides a magnesium aluminum phosphate fluorescent powder co-doped with europium ions and manganese ions and a preparation method thereof. The fluorescent powder includes a chemical composition formula of Mg1-x-yEuxMnyAl(PO4)zO, wherein x=0.001~0.1; y =0.001~0.1; z=0.9~1.2. The phosphor powder provided by the present invention can be effectively excited by ultraviolet light and blue light, and emits broadband visible fluorescence from a wavelength range of 400nm to 700nm, with a central peak at around 450nm and 640nm; It is used for full-color white phosphors for white LEDs or energy-saving lamps.

Description

technical field [0001] The invention relates to lighting and display fluorescent powder technology, in particular to a magnesium aluminum phosphate fluorescent powder co-doped with europium ions and manganese ions and a preparation method thereof, belonging to the technical field of fluorescent materials. Background technique [0002] Energy conservation and environmental protection are already the mainstream of future social development. Compared with incandescent lamps and energy-saving lamps that are widely used at present, LED (Light Emitting Diode)-based solid-state lighting has many advantages such as energy saving, stability, and environmental protection. Therefore, the development of semiconductor lighting is conducive to ending the energy crisis and the environmental problems existing in the original incandescent lamps and energy-saving lamps. In order to realize white light LED, a better method is to use light conversion phosphor. At present, the common white LED...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/81
CPCY02B20/181Y02B20/00
Inventor 邱建备宋志国徐圆圆杨正文周大成尹兆益
Owner KUNMING UNIV OF SCI & TECH
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