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Dysprosium-ion-doped yttrium-barium phosphate fluorescent powder and preparation method thereof

A technology of barium yttrium phosphate and phosphor powder, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of insufficient color rendering index and color temperature, affecting luminous efficiency, complicated preparation process, etc. Simple preparation process

Inactive Publication Date: 2015-12-02
LUOYANG INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To solve the existing YAG:Dy 3+ The yellow-emitting phosphor powder relies on blue light excitation to realize white light, the preparation process is complicated, the color rendering index and color temperature are insufficient, and the high-temperature solid-phase method is easy to agglomerate, and the luminous efficiency is easily affected after the particles are broken. The present invention provides a Dysprosium ion Doped yttrium barium phosphate fluorescent powder and preparation method thereof, the fluorescent powder is yellow-green fluorescent powder, excited by ultraviolet light or near ultraviolet light, has high luminous efficiency, simple preparation method and environmental protection

Method used

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  • Dysprosium-ion-doped yttrium-barium phosphate fluorescent powder and preparation method thereof
  • Dysprosium-ion-doped yttrium-barium phosphate fluorescent powder and preparation method thereof
  • Dysprosium-ion-doped yttrium-barium phosphate fluorescent powder and preparation method thereof

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Effect test

Embodiment 1

[0030] A dysprosium ion doped yttrium barium phosphate fluorescent powder, the chemical formula of the fluorescent powder is: Ba 3 Y 0.96 Dy 0.04 (PO 4 ) 3 .

[0031] The preparation method of the above-mentioned dysprosium ion-doped yttrium barium phosphate fluorescent powder comprises the following steps:

[0032] 1) Weigh the barium source, yttrium source, dysprosium source and phosphorus source according to the above stoichiometric ratio, and completely dissolve the phosphorus source with deionized water to prepare a phosphorus source solution, and in the phosphorus source solution, phosphate or other The effective phosphate concentration is 0.05mol / l, for standby;

[0033] 2) Take fuming nitric acid, add deionized water to it to adjust its concentration to 15mol / l, and prepare a reaction system for future use;

[0034] Wherein, the amount of nitric acid will ensure that it can completely dissolve the barium source, yttrium source and dysprosium source in step 1);

...

Embodiment 2

[0039] A dysprosium ion doped yttrium barium phosphate fluorescent powder, the chemical formula of the fluorescent powder is: Ba 3 Y 0.999 Dy 0.001 (PO 4 ) 3 .

[0040] The preparation method of the above-mentioned dysprosium ion-doped yttrium barium phosphate fluorescent powder comprises the following steps:

[0041] 1) Weigh the barium source, yttrium source, dysprosium source and phosphorus source according to the above stoichiometric ratio, and completely dissolve the phosphorus source with deionized water to prepare a phosphorus source solution, and in the phosphorus source solution, phosphate or other The effective phosphate concentration is the saturation concentration, which is reserved;

[0042] 2) Take fuming nitric acid, add deionized water to it to adjust its concentration to 20mol / l, and prepare a reaction system for future use;

[0043] Wherein, the amount of nitric acid will ensure that it can completely dissolve the barium source, yttrium source and dyspros...

Embodiment 3

[0048] A dysprosium ion doped yttrium barium phosphate fluorescent powder, the chemical formula of the fluorescent powder is: Ba 3 Y 0.8 Dy 0.2 (PO 4 ) 3 , where x takes 0.001 to 0.2.

[0049] The preparation method of the above-mentioned dysprosium ion-doped yttrium barium phosphate fluorescent powder comprises the following steps:

[0050] 1) Weigh the barium source, yttrium source, dysprosium source and phosphorus source according to the above stoichiometric ratio, and completely dissolve the phosphorus source with deionized water to prepare a phosphorus source solution, and in the phosphorus source solution, phosphate or other The effective phosphate concentration is 1.5 mol / l, for standby;

[0051] 2) Take fuming nitric acid, add deionized water to it to adjust its concentration to 17.5mol / l, and prepare a reaction system for future use;

[0052] Wherein, the amount of nitric acid will ensure that it can completely dissolve the barium source, yttrium source and dysp...

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Abstract

The invention discloses dysprosium-ion-doped yttrium-barium phosphate fluorescent powder and a preparation method thereof. The fluorescent powder has the chemical formula shown as follows: Ba3Y(1-x)Dyx(PO4)3, wherein x is selected from 0.001 to 0.2. Y<3+> is substituted with Dy<3+> to obtain yellow green fluorescent powder which is high in crystalline degree, high in light intensity and good in color rendering index. The fluorescent powder can be effectively excitated by ultraviolet light to emit blue light with the wavelength of 480nm and yellow fluorescent light with the wavelength of 573nm and is yellow green fluorescent powder which can be used for white-light LEDs or energy-saving lamps. The preparation method disclosed by the invention is simple and convenient to operate, low in production cost and equipment requirement; the obtained dysprosium-ion-doped yttrium-barium phosphate fluorescent powder is stable in quality; and industrial production is easily realized.

Description

technical field [0001] The invention relates to the field of ultraviolet-near ultraviolet white light LED lighting and display phosphors, in particular to a dysprosium ion-doped yttrium barium phosphate phosphor and a preparation method thereof. Background technique [0002] White light-emitting diode (LED) is called the fourth generation of lighting source. As a new generation of solid light source, in addition to overcoming the shortcomings of traditional incandescent and fluorescent lamps such as high energy consumption, fragility, and pollution, it also has small size and environmental protection. , fast response, long life, planar packaging, high luminous intensity, high efficiency, energy saving, vibration resistance, low voltage drive, and no environmental pollution. Especially in recent years, with the rapid development of blue, purple and ultraviolet LEDs, white LEDs have great application prospects in the field of lighting, and are recognized as green lighting sour...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/81
Inventor 石冬梅赵营刚许晓颖
Owner LUOYANG INST OF SCI & TECH
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