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Zinc-magnesium phosphate single-matrix white-light fluorescent powder and preparation method thereof

A zinc-magnesium phosphate, single-matrix technology, used in chemical instruments and methods, luminescent materials, sustainable buildings, etc., can solve the problems of low luminous efficiency and poor luminous performance of phosphors, and achieve uniform doping distribution and low calcination temperature. , the effect of simple preparation process

Inactive Publication Date: 2019-05-21
XINJIANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a zinc-magnesium phosphate single-matrix white light phosphor and a preparation method thereof, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problems of low luminous efficiency and poor luminous performance of the phosphor prepared in the prior art

Method used

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  • Zinc-magnesium phosphate single-matrix white-light fluorescent powder and preparation method thereof
  • Zinc-magnesium phosphate single-matrix white-light fluorescent powder and preparation method thereof
  • Zinc-magnesium phosphate single-matrix white-light fluorescent powder and preparation method thereof

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Embodiment 1

[0020] Embodiment 1: The zinc magnesium phosphate single-matrix white light phosphor has a chemical composition formula of MgZn 2 (PO4) 2 : aCe 3+ , bDy 3+ , wherein, a is 0.02 to 0.08, b is 0.0004 to 0.004, and a and b are mole fractions.

Embodiment 2

[0021] Embodiment 2: The zinc-magnesium phosphate single-matrix white light phosphor has a chemical composition formula of MgZn 2 (PO4) 2 : aCe 3+ , bDy 3 + , wherein, a is 0.02 or 0.08, b is 0.0004 or 0.004, and a and b are mole fractions.

Embodiment 3

[0022] Embodiment 3: This zinc-magnesium phosphate single-matrix white light phosphor is prepared according to the following method: the first step, according to the stoichiometric ratio, the required amount of Mg(NO 3 ) 2 ·6H 2 O(AR), Zn(NO 3 ) 2 ·6H 2 O(AR), Ce(NO 3 ) 3 ·6H 2 O(AR), Dy(NO 3 ) 3 ·6H 2 O(AR) was dissolved in deionized water to obtain the first solution; in the second step, the required amount of (NH 4 ) 2 HPO 4(AR) Dissolve in deionized water to obtain the second solution; the third step, add the second solution dropwise to the first solution and mix evenly to obtain a precipitate; the fourth step, let the precipitate stand for 3 hours to 8 hours, after suction filtration at a pressure of 0.05MPa to 0.08MPa, wash with deionized water for 3 to 5 times, and dry at 100°C to 120°C to obtain a precursor powder; the fifth step, Precursor powder in N 2 95%, H 2 In a weakly reducing atmosphere of 5%, heat up to a temperature of 700°C to 900°C, calcinate...

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Abstract

The invention relates to the technical field of rare earth luminescent materials, in particular to zinc-magnesium phosphate single-matrix white-light fluorescent powder and a preparation method thereof. The chemical composition formula of zinc-magnesium phosphate single-matrix white-light fluorescent powder is MgZn2 (PO4) 2: aCe 3 +, bDy 3 +, and Mg (NO3) 2 6H2O, Zn (NO3) 2 6H2O, Ce (NO3) 3 6H2O,Dy (NO3) 3 6H2O and (NH4) 2HPO4 are dissolved in deionized water to obtain precipitate and then calcined to obtain zinc-magnesium phosphate single-matrix white-light fluorescent powder. According to zinc-magnesium phosphate single-matrix white-light fluorescent powder and the preparation method thereof, zinc magnesium phosphate is used as a matrix for the first time and is doped with Ce 3 + and Dy3 +, so that the prepared product has stable chemical property and low raw material cost; meanwhile, a coprecipitation method is adopted, so that the preparation process is simple and convenient, thecalcination temperature in the preparation process is low, the production process is safe, the environment is protected, the energy is saved, the process is simple, and materials in the prepared product are uniformly doped and distributed, and the brightness is high.

Description

technical field [0001] The invention relates to the technical field of rare earth luminescent materials, and relates to a zinc-magnesium phosphate single-matrix white light phosphor and a preparation method thereof. Background technique [0002] White light emitting diode (light emitting diode, LED), compared with traditional incandescent lamps, energy-saving lamps and other lighting sources, has non-toxic, high efficiency, energy saving, small size, long life, all solid state, fast response, low working voltage, With many advantages such as good shock resistance, it is widely used in lighting and display fields. At present, there are two main implementation methods for commercialized white light LEDs. One is InGaN blue light-emitting diodes combined with yellow light-emitting phosphor YAG:Ce. The color index is low, the color reproduction is not good, and the temperature rise causes color drift and other problems. The other is ultraviolet / near-ultraviolet excited red, gre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/70
CPCY02B20/00
Inventor 徐梦姣刘艳红雒婉霞王鲁香贾殿赠
Owner XINJIANG UNIVERSITY
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