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

A technology of ion doping and barium yttrium phosphate, which is applied in chemical instruments and methods, luminescent materials, sustainable buildings, etc., can solve the problems of easy agglomeration, insufficient thermal stability of blue phosphor powder, and affecting luminous efficiency, and achieve luminous intensity The effect of large, fine particles and rich sources of raw materials

Inactive Publication Date: 2015-11-25
LUOYANG INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the existing BaMgAl 10 o 17 :Eu 2+ and (Sr,Ba,Ca,Mg) 5 (PO 4 ) 3 Cl:Eu 2+ The problem of insufficient thermal stability of blue-light phosphors and the shortcomings of easy agglomeration of high-temperature solid-phase methods, and easy impact on luminous efficiency and luminous intensity after particle breakage, the invention provides a thulium ion-doped yttrium barium phosphate phosphor and its preparation method , the phosphor is excited by ultraviolet light or near ultraviolet light, has high luminous efficiency, good thermal stability, simple preparation method and environmental protection

Method used

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

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Effect test

Embodiment 1

[0030] A kind of thulium ion-doped yttrium barium phosphate fluorescent powder, the chemical formula of this fluorescent powder is: Ba 3 Y 0.999 T m 0.001 (PO 4 ) 3 .

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

[0032] 1) Weigh the barium source, yttrium source, thulium 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 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, prepare the reaction system, and set aside;

[0034] Wherein, the amount of nitric acid should ensure that it can completely dissolve the barium source, yttrium source and thul...

Embodiment 2

[0039] A kind of thulium ion-doped yttrium barium phosphate fluorescent powder, the chemical formula of this fluorescent powder is: Ba 3 Y 0.75 T m 0.25 (PO 4 ) 3 .

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

[0041]1) Weigh the barium source, yttrium source, thulium 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 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, prepare the reaction system, and set aside;

[0043] Wherein, the amount of nitric acid should ensure that it can completely dissolve the barium source, y...

Embodiment 3

[0048] A kind of thulium ion-doped yttrium barium phosphate fluorescent powder, the chemical formula of this fluorescent powder is: Ba 3 Y 0.95 T m 0.05 (PO 4 ) 3 .

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

[0050] 1) Weigh the barium source, yttrium source, thulium 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 The effective phosphate concentration is 2mol / l, and it is reserved;

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

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

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Abstract

The invention provides thulium ion doped yttrium-barium phosphate fluorescent powder and a preparation method thereof. The chemical formula of the fluorescent powder is Ba3Y(1-x)Tmx(PO4)3, wherein x in the formula ranges from 0.001 to 0.25. The blue fluorescent powder is obtained by substituting Y<3+> with Tm<3+>, the crystallization performance is good, the luminous intensity is high, and the color rendering performance is good. The fluorescent powder can be effectively excited by blue light or ultraviolet light to emit blue fluorescent light with the main wavelength being 457 nm, and the blue fluorescent powder can be used for white-light LEDs or white-light energy-saving lamps. According to the fluorescent powder and the preparation method, the operation is simple, the production cost and the requirement for equipment are low, obtained products have stable quality, and industrial product can be easily realized.

Description

technical field [0001] The invention relates to the field of ultraviolet white light LED lighting and display phosphors, in particular to a thulium 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 sources that replace flu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/81
CPCY02B20/00
Inventor 石冬梅赵营刚袁霄梅
Owner LUOYANG INST OF SCI & TECH
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