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Fluoroborosilicate-based red phosphor, and preparation method and application thereof

A technology of fluoroborosilicate and red phosphor, applied in chemical instruments and methods, luminescent materials, electrical components, etc., can solve the problems of complex preparation methods and low luminous efficiency, and achieve simple preparation process and high color rendering , cheap effect

Active Publication Date: 2014-12-17
苏州三木知识产权服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, commercial red phosphors for LEDs are mainly Y 2 o 2 S:Eu 3+ , the red phosphor is sulfide, the preparation method is complicated, and the luminous efficiency is low

Method used

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  • Fluoroborosilicate-based red phosphor, and preparation method and application thereof
  • Fluoroborosilicate-based red phosphor, and preparation method and application thereof
  • Fluoroborosilicate-based red phosphor, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation of BaY 6 (Si 3 B 6 o 24 )F:0.1Eu 3+

[0036] According to the chemical formula BaY 6 (Si 3 B 6 o 24 )F:0.1Eu 3+ , respectively weighed yttrium oxide Y 2 o 3 : 1.22 g, europium oxide Eu 2 o 3 : 0.106 g, boron trioxide B 2 o 3 : 0.418 g, silicon dioxide SiO 2 : 0.36 g, ground in an agate mortar and mixed evenly, select the air atmosphere for pre-calcination, the pre-calcination temperature is 500 ° C, the calcination time is 7 hours, cool to room temperature, take out the sample; the raw material calcined for the first time is fully Mix and grind evenly, carry out the second calcination in the air atmosphere, the sintering temperature is 850°C, the calcination time is 12 hours, cool to room temperature, take out the sample; finally add 1.052 grams of excess barium fluoride BaF to the obtained mixture 2 Afterwards, it is fully ground again and placed in a muffle furnace, and calcined in an air atmosphere at a calcining temperature of 1100°C and ...

Embodiment 2

[0042] Preparation of BaLa 6 (Si 3 B 6 o 24 )F:0.0001Eu 3+

[0043] According to the chemical formula BaLa 6 (Si 3 B 6 o 24 )F:0.0001Eu 3+ , respectively weighed lanthanum oxide La 2 o 3 : 1.955 g, europium nitrate Eu (NO 3 ) 3 -6H 2 O: 0.5352 g, boric acid H 3 BO 3 : 0.742 g, silicon dioxide SiO 2 : 0.36 g, ground in an agate mortar and mixed evenly, select the air atmosphere for pre-calcination, the pre-calcination temperature is 600 ° C, after sintering for 9 hours, cool to room temperature, take out the sample; add excess fluorine to the obtained mixture Barium Fe BaF 2 : 1.052 g, fully ground again, placed in a muffle furnace, and calcined in an air atmosphere at a calcining temperature of 1000° C. for 9 hours. After cooling, the powdery fluoroborosilicate-based red luminescent material was obtained.

[0044] The excitation spectrum, emission spectrum and decay curve of the fluorescent powder obtained in this embodiment are similar to those in Embodiment...

Embodiment 3

[0046] Preparation of BaPr 6 (Si 3 B 6 o 24 )F:0.1Eu 3+

[0047] According to the chemical formula BaPr 6 (Si 3 B 6 o 24 )F:0.1Eu 3+ , respectively weighed praseodymium sulfate Pr 2 (SO 4 ) 3 -8H 2 O: 3.857 g, europium oxide Eu 2 o 3 : 0.106 g, boric acid H 3 BO 3 : 0.742 g, silicon dioxide SiO 2 : 0.36 g, ground in an agate mortar and mixed evenly, pre-calcined in an air atmosphere, the pre-calcined temperature is 450 ° C, the sintering time is 7 hours, cooled to room temperature, and the sample is taken out; the raw material calcined for the first time is fully Mix and grind evenly, carry out the second calcination in air atmosphere, sintering temperature 850°C, calcination time 12 hours, cool to room temperature, take out the sample; finally add excess barium fluoride BaF to the obtained mixture 2 : After 1.052 g, it is fully ground again and placed in a muffle furnace, and calcined in an air atmosphere at a calcining temperature of 1100° C. and a calcinin...

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Abstract

The invention discloses a fluoroborosilicate-based red phosphor, and a preparation method and an application thereof. The chemical structural formula of the phosphor is BaR<III>6(Si3B6O24)F2:xEu<3+>, wherein R<III> is one of La<3+>, Ce<3+>, Pr<3+>, Nd<3+>, Sm<3+>, Gd<3+>, Tb<3+>, Dy<3+>, Ho<3+>, Er<3+>, Yb<3+>, Lu<3+> and Y<3+> ions; and x is the mole percentage coefficient of the replacement of R<III> by Eu<3+>, and x is not less than 0.0001 and not more than 1. The phosphor is prepared through adopting a high temperature solid phase technology or a chemical solution technology, and can emit red fluorescence with the dominant wavelength nearby 595nm under the excitation of near ultraviolet light with the wavelength of 380-410nm. The fluoroborosilicate-based red phosphor has the characteristics of high crystallization degree, substantial luminescence efficiency and simple preparation method, and can be used in various illumination displays with the near ultraviolet light as an excitation source, and photoluminescence chroma adjustment.

Description

technical field [0001] The invention relates to an inorganic luminescent material, in particular to a fluorescent powder excited by near ultraviolet light, belonging to the technical field of luminescent material and display. Background technique [0002] White LED has the advantages of small size, high efficiency, long life, low energy consumption, and no pollution. It is the most promising green lighting source in the 21st century and is known as the "fourth generation lighting source". As the fourth-generation lighting source after incandescent lamps, fluorescent lamps and HID (high-intensity discharge) lamps, white LEDs have great application prospects in the field of lighting and display due to their energy saving, environmental protection, long life, small size and many other advantages. . [0003] At present, there are two main ways to realize white light LED by using light-converting phosphor, among which the most common and mature method is to use blue light InGaN ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/86H01L33/50
Inventor 黄彦林秦琳关莹陶正旭
Owner 苏州三木知识产权服务有限公司
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