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Metal nanoparticle-doped yttrium vanadate luminescent material and preparation method thereof

A technology of metal nanoparticles and luminescent materials, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems that affect the application and low luminous efficiency, and achieve the effect of less harsh process conditions, fewer process steps, and improved luminous efficiency

Inactive Publication Date: 2014-09-24
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Currently commercial red phosphor systems mainly include (Ca 1-x Sr x S):Eu 2+ , tungstate and molybdate series, Y 2 o 3 :Eu 3+ ,Y 2 o 2 S:Eu 3+ ,YVO 4 :Eu 3+ etc., their luminous efficiency is not high under the excitation of near ultraviolet or blue light, which affects their application

Method used

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  • Metal nanoparticle-doped yttrium vanadate luminescent material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0024] Preparation of Y by sol-gel method 0.8 VO 4 :Eu 0.1 ,Al 0.1 ,Pd 1×10 -5

[0025] Preparation of Pd-containing nanoparticle sol: Weigh 0.22 mg palladium chloride (PdCl 2 2H 2 O) be dissolved in the deionized water of 10mL; Under the condition of magnetic stirring, 11.0mg sodium citrate and 4.0mg sodium lauryl sulfate are dissolved in the above-mentioned palladium chloride solution; Weigh 0.38mg sodium borohydride and dissolve in 100mL deionized water to obtain a concentration of 1×10 -4 mol / L sodium borohydride solution; under the condition of magnetic stirring, quickly add 10mL of the above-mentioned sodium borohydride solution to the above-mentioned palladium chloride solution, react for 20min, and obtain 20mL of Pd nanoparticles with a concentration of 5×10 -5 mol / L of sol.

[0026] Weigh 0.8508g Y(CH 3 COO) 3 , 0.0816g Al(CH 3 COO) 3 and 0.1315g Eu(CH 3 COO) 3 Put it in a container, then add 50mL of a mixed solution of ethanol and water with a volume ra...

Embodiment 2

[0029] Preparation of Y by sol-gel method 0.93 VO 4 :Eu 0.05 ,Al 0.02 , Ag 2.5×10 -4:

[0030] Preparation of Ag nanoparticles sol: weigh 3.4 mg silver nitrate (AgNO 3 ) was dissolved in 18.4mL of deionized water; under the condition of magnetic stirring, 42mg of sodium citrate was dissolved in the above silver nitrate solution; 5.7mg of sodium borohydride was weighed and dissolved in 10mL of deionized water to obtain a concentration of 1.5×10 -2 mol / L sodium borohydride solution; under the condition of magnetic stirring, add 1.6mL of the above-mentioned sodium borohydride solution to the above-mentioned silver nitrate solution at one time, and continue to react for 10min to obtain 20mL of Ag nanoparticles with a concentration of 1×10 -3 mol / L of sol.

[0031] Weigh 1.0226g Y(NO 3 ) 3 , 0.0170g Al(NO 3 ) 3 and 0.0676g Eu(NO 3 ) 3 Put it in a container, then add 50mL of a mixed solution of ethanol and water with a volume ratio of 8:1, and add 1mL with a concentratio...

Embodiment 3

[0036] Preparation of Y by sol-gel method 0.985 VO 4 :Eu 0.01 ,Al 0.005 ,Pt 5×10 -3

[0037] Containing the preparation of Pt nanoparticle sol: take by weighing 25.9mg chloroplatinic acid (H 2 PtCl 6 ·6H 2 O) be dissolved in 17mL of deionized water; under the condition of magnetic stirring, 400mg sodium citrate and 600mg sodium dodecylsulfonate are dissolved in the above-mentioned chloroplatinic acid solution; 1.9mg sodium borohydride is weighed and dissolved in 10mL deionized water to obtain a concentration of 5 x 10 -3 mol / L sodium borohydride solution; at the same time prepare 10mL concentration of 5×10 -2 mol / L hydrazine hydrate solution; under the condition of magnetic stirring, first add 0.4mL of the above-mentioned sodium borohydride solution dropwise to the above-mentioned chloroplatinic acid solution, after reacting for 5min, then add 2.6mL of the above-mentioned hydrazine hydrate solution to the above-mentioned chloroplatinic acid solution Hydrazine solution...

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Abstract

The invention discloses a metal nanoparticle-doped yttrium vanadate luminescent material and a preparation method thereof, belonging to the field of luminescent materials. The general chemical formula of the luminescent material is Y1-x-yVO4:Eux,Aly,Mz, wherein M is at least one selected from metal nanoparticles consisting of Ag, Au, Pt, Pd and Cu, x is more than 0 and no more than 0.2, y is more than 0 and no more than 0.1, and z is the mol ratio of M to Y1-x-yVO4:Eux,Aly and is more than 0 and no more than 1 * 10<-2>. In the metal nanoparticle-doped yttrium vanadate luminescent material, the M metal particle is introduced, so the yttrium vanadate luminescent material has greatly improved luminous efficiency under same excitation conditions and the wavelength of emitted light is not changed.

Description

technical field [0001] The invention relates to the field of luminescent materials, in particular to a yttrium vanadate luminescent material doped with metal nanoparticles and a preparation method. Background technique [0002] White LED has a series of advantages such as low voltage, low power consumption, high reliability and long life, and is a green lighting source that meets environmental protection and energy saving. At this stage, manufacturing white LEDs with high color rendering index, low color temperature, and high power is the general trend of white LED development, and the performance of red phosphor has a significant impact on the color rendering index and color temperature of white LEDs. Therefore, it is very important to improve the luminous efficiency and color purity of red phosphors and to find new red phosphors with high stability and high efficiency. Currently commercial red phosphor systems mainly include (Ca 1-x Sr x S):Eu 2+ , tungstate and molybd...

Claims

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Application Information

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IPC IPC(8): C09K11/82
Inventor 周明杰王荣
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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