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Method for preparing MAlSiO4:Tb3+, Eu2+ yellow light fluorescent powder for LED

A fluorescent powder and yellow light technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of uneven mixing of activators, low excitation efficiency of phosphor powder, uneven particle distribution, etc., and achieve uniform particle size distribution , high color purity and simple process

Active Publication Date: 2016-06-08
SHENZHEN JUFEI OPTOELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the technical bottlenecks of uneven mixing of activators, low excitation efficiency of phosphors, poor color uniformity and uneven particle distribution in the traditional method, thereby proposing a phosphor with uniform particles, MAlSiO for LED with high excitation efficiency and good color uniformity 4 :Tb 3+ , Eu 2+ Preparation method of yellow fluorescent powder

Method used

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  • Method for preparing MAlSiO4:Tb3+, Eu2+ yellow light fluorescent powder for LED
  • Method for preparing MAlSiO4:Tb3+, Eu2+ yellow light fluorescent powder for LED

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Embodiment 1

[0028] Embodiment 1 This embodiment discloses a kind of MASiO for LED 4 :Tb 3+ , Eu 2+ The preparation method of yellow light fluorescent powder, concrete steps are as follows:

[0029] (1) Weigh 12.004g of Al(NO 3 ) 3 9H 2 O particles are placed in a high-pressure container (the volume of the high-pressure container is 80mL, the material is a polytetrafluoroethylene liner, a stainless steel shell, and the pressure range is 0-10Mpa), and the filling ratio is 40% (referring to the ratio of the volume of the solvent to the volume of the high-pressure container) ), C 2 h 5 O (absolute ethanol): H 2 O (distilled water) = 0.6:1 volume ratio, add 12mL of C to the high pressure vessel 2 h 5 O and 20 mL of H 2 O, to be Al(NO 3 ) 3 9H 2 After the O particles are fully dissolved, Al(NO 3 ) 3 solution (referring to Al3+ accounted for C 2 h 5 O and H 2 O the concentration of the total volume of the mixed solution);

[0030] (2) According to the molar ratio of Na:Ag:Al:S...

Embodiment 2

[0035] Embodiment 2 This embodiment discloses a kind of MASiO2 for LED 4 :Tb 3+ , Eu 2+ The preparation method of yellow light fluorescent powder, concrete steps are as follows:

[0036] (1) Weigh 4.502g of Al(NO 3 ) 3 9H 2 O particles are placed in a high-pressure container (the volume of the high-pressure container is 80mL, the material is a polytetrafluoroethylene liner, a stainless steel shell, and the pressure range is 0-10Mpa), and the filling ratio is 30% (referring to the ratio of the volume of the solvent to the volume of the high-pressure container) ), C 2 h 5 O (absolute ethanol): H 2 O (distilled water) = 0.25:1 volume ratio, add 4.8mL of C into the pressure vessel 2 h 5 O and 19.2 mL of H 2 O, to be Al(NO 3 ) 3 9H 2 After the O particles are fully dissolved, Al(NO 3 ) 3 solution (referring to Al 3+ accounted for C 2 h 5 O and H 2 O the concentration of the total volume of the mixed solution);

[0037] According to the molar ratio of K:Al:Si=1:1...

Embodiment 3

[0042] Embodiment 3 This embodiment discloses a kind of MASiO for LED 4 :Tb 3+ , Eu 2+ The preparation method of yellow light fluorescent powder, concrete steps are as follows:

[0043] (1) Weigh 6.302g of Al(NO 3 ) 3 9H 2 O particles are placed in a high-pressure container (the volume of the high-pressure container is 80mL, the material is a polytetrafluoroethylene liner, a stainless steel shell, and the pressure range is 0-10Mpa), and the filling ratio is 60% (referring to the ratio of the volume of the solvent to the volume of the high-pressure container) ), C 2 h 5 O (absolute ethanol): H 2 O (distilled water) = 0.2:1 volume ratio, add 8mL of C into the pressure vessel 2 h 5 O and 40 mL of H 2 O, to be Al(NO 3 ) 3 9H 2 After the O particles are fully dissolved, Al(NO 3 ) 3 solution (referring to Al 3+ accounted for C 2 h 5 O and H 2 O the concentration of the total volume of the mixed solution);

[0044] (2) According to the molar ratio of Li:Na:Al:Si=0...

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Abstract

The invention belongs to the technical field of preparing fluorescent powder through the wet chemical method, and particularly relates to a method for preparing MAlSiO4:Tb3+, Eu2+ yellow light fluorescent powder for an LED. The MAlSiO4:Tb3+, Eu2+ yellow light fluorescent powder (0<x< / =0.5) for the LED is prepared through the solvothermal method. The MAlSiO4:Tb3+, Eu2+ yellow light fluorescent powder can be obtained through low-temperature forging in the later stage. The MAlSiO4:Tb3+, Eu2+ yellow light fluorescent powder obtained through the solvothermal method is uniform in particle size distribution, high in excitation efficiency and good in color zone uniformity, and the fluorescent powder can be matched with blue light excitation to achieve white light emission.

Description

technical field [0001] The invention belongs to the technical field of preparing fluorescent powder by wet chemical method, in particular to a kind of MAlSiO for LED 4 :Tb 3+ , Eu 2+ The preparation method of the yellow fluorescent powder. Background technique [0002] At present, rare earth luminescent materials have become the core materials in the fields of information display, lighting source, and optoelectronic devices. Among them, the most widely used is the phosphor material that can be excited by ultraviolet light-blue light (200-500nm) to produce different luminous colors. The high luminous intensity, high color purity and uniform particle size of phosphor can significantly improve the performance of optoelectronic devices. At present, phosphor matrix materials mainly include aluminate, silicate, tungstate and titanate, etc., but phosphors of different systems have differences in color rendering performance and luminous intensity. [0003] In 2011, Huang Yanlin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/64
CPCC09K11/7792
Inventor 高丹鹏周世官邢其彬
Owner SHENZHEN JUFEI OPTOELECTRONICS CO LTD
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