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Nitrogen-containing aluminum silicate compound red luminescent material and preparation method thereof

A silicon compound, red light-emitting technology, applied in the fields of light-emitting materials, chemical instruments and methods, sustainable buildings, etc., can solve the problems of poor thermal stability, easy deliquescence, low luminous efficiency, etc., achieve complete crystallization, reduce raw material costs, light The effect of high conversion efficiency

Inactive Publication Date: 2016-10-12
XIA MEN KE YU PHOTOELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional red phosphor luminescent materials are mainly oxy(sulfur) compounds or oxo acid salts, such as Y 2 o 3 :Eu 3+ 、YVO 4 :Eu 3+ , (Ca 1-x Sr x )S:Eu 2+ etc., there are common deficiencies such as easy deliquescence, poor thermal stability, and low luminous efficiency, so it is urgent to research and develop new high-efficiency, high thermal stability red phosphor luminescent materials

Method used

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  • Nitrogen-containing aluminum silicate compound red luminescent material and preparation method thereof
  • Nitrogen-containing aluminum silicate compound red luminescent material and preparation method thereof
  • Nitrogen-containing aluminum silicate compound red luminescent material and preparation method thereof

Examples

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Embodiment 1

[0030] Example 1: Sr 2.995 AlSi 6 N 11 :0.005Eu 2+ Preparation example of luminescent material

[0031] In order to obtain the composition formula Sr 2.995 AlSi 6 N 11 :0.005Eu 2+ For the compound luminescent material represented, weigh Sr(NO 3 ) 2 , Al(NO 3 ) 3 , Eu(NO 3 ) 3 , nano-silicon solution, 0.5% NH with solid raw material mass fraction 4 Cl was used as a flux, and the above raw materials were dissolved in pure water under ultrasonic stirring, and stirred for 1 h. After mixing evenly, it was introduced into a spray pyrolysis device for spray drying. The spray drying conditions were: high-purity nitrogen was used as the carrier gas, and the nitrogen pressure was 6.5×10 5 KPa, the gas flow rate is 700L h -1 , the inlet temperature is 230°C, the outlet temperature is 130°C, and the spray speed is 80mL·h -1 The nano-precursor particles of the obtained nitrogen-containing aluminum-silicon compound red luminescent material are collected with a filter bag und...

Embodiment 2

[0033] Example 2: Ca 2.99 AlSi 6 N 11 :0.01Eu 2+ Preparation example of luminescent material

[0034] In order to obtain the composition formula Ca 2.99 AlSi 6 N 11 :0.01Eu 2+ For the compound luminescent material represented, weigh Ca(NO 3 ) 2 , Al(NO 3 ) 3 , Eu(NO 3 ) 3 , nano-silicon solution, 0.5% NH with solid raw material mass fraction 4 Cl was used as a flux, and the above raw materials were dissolved in pure water under ultrasonic stirring, and stirred for 1 h. After mixing evenly, it was introduced into a spray pyrolysis device for spray drying. The spray drying conditions were: high-purity nitrogen was used as the carrier gas, and the nitrogen pressure was 6×10 5 KPa, the gas flow rate is 650L h -1 , the inlet temperature is 225°C, the outlet temperature is 120°C, and the spray speed is 80mL·h -1 The nano-precursor particles of the obtained nitrogen-containing aluminum-silicon compound red luminescent material are collected with a filter bag under nit...

Embodiment 3

[0036] Example 3: Sr 2.99 Ba 0.005 AlSi 6 N 11 :0.005Eu 2+ Preparation example of luminescent material

[0037] In order to obtain the composition formula Sr 2.99 Ba 0.005 AlSi 6 N 11 :0.005Eu 2+ Represented compound, weigh Sr(NO 3 ) 2 , Ba(NO 3 ) 2 , Al(NO 3 ) 3 , Eu(NO 3 ) 3 , nano silicon solution, with 0.5% NH 4 Cl was used as a flux, and the above raw materials were dissolved in pure water under ultrasonic stirring, and stirred for 1 h. After mixing evenly, it was introduced into a spray pyrolysis device for spray drying. The spray drying conditions were: high-purity nitrogen was used as the carrier gas, and the nitrogen pressure was 7×10 5 KPa, the gas flow rate is 700L h -1 , the inlet temperature is 230°C, the outlet temperature is 130°C, and the spray speed is 80mL·h -1 The nano-precursor particles of the obtained nitrogen-containing aluminum-silicon compound red luminescent material are collected with a filter bag under nitrogen protection, and ar...

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Abstract

The invention relates to a nitrogen-containing aluminum silicate compound red luminescent material and a preparation method thereof. The molecular formula of the material is M<3-x>AlSi<6>N<11>: xEU<2+>, wherein M is one or more than one selected from a group consisting of Mg, Ga, Sr, Ba, and x is no less than 0.001 and no more than 0.05. The material is prepared from a nitrate compound containing alkaline earth metal M, Al(NO3)3, Eu(NO3)3, nanometer silica sol or nanometer silicon oxide sol, and NH4Cl. The invention has the advantages that the nitrogen-containing aluminum silicate compound red luminescent material has the characteristics of high phototransformation efficiency, a high degree of crystallization, good heat stability, a high color rendering index, etc.; the preparation method is simple to operate, can reduce reaction temperature and pressure and poses no environmental pollution in the process of preparation; and the luminescent material prepared in the invention can be cooperated with other luminescent materials and ultraviolet, near ultraviolet or blue-light LEDs to prepare novel white-light LED light sources, or be cooperated with ultraviolet, near ultraviolet or blue-light LEDs to prepare red LED light sources.

Description

technical field [0001] The invention relates to a nitrogen-containing aluminum-silicon compound red light-emitting material used for display screens, liquid crystal backlights, white light-emitting diodes, red light-emitting diodes, fluorescent lamps and the like and a preparation method thereof. Background technique [0002] As a new type of green light source product, LED is called the fourth-generation lighting source or green light source. Compared with traditional lighting products, LED has the characteristics of energy saving, environmental protection, long life, small size, etc., and can be widely used in various indications. , display, decoration, backlight, general lighting and urban night scenes and other fields. Compared with traditional lighting products, LEDs have the following advantages: high efficiency and energy saving, long lifespan, environmental protection, good color rendering, rich colors, and diversified product appearances. At present, the mainstream...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/64
CPCC09K11/7734Y02B20/00
Inventor 李辉唐勇王惠璇
Owner XIA MEN KE YU PHOTOELECTRIC CO LTD
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