Metal-nanoparticle-doped yttrium oxide strontium luminescent material and preparation method thereof

A technology of metal nanoparticles and luminescent materials, applied in luminescent materials, chemical instruments and methods, nanotechnology, etc., can solve the problem of low luminous efficiency of luminescent materials, and achieve improved luminous efficiency, less harsh process conditions, and fewer process steps. Effect

Inactive Publication Date: 2014-10-29
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] QUR 2 o 4 Tm-doped or Dy-doped luminescent material is a luminescent material developed in recent years, which is mainly used in field emission devices. However, the luminous efficiency of the luminescent material is not high at present and needs to be improved.

Method used

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

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of hollow structure SrY coated with metal nanoparticles 1.999 o 4 :Tm 0.001 3+ Cu 1×10 -4:

[0027] Preparation of Cu nanoparticle sol: Weigh 1.6mg of copper nitrate and dissolve it in 16mL of ethanol. After it is completely dissolved, add 2mg of PVP while stirring, and then slowly drop in 1× 10 -3 mol / L sodium borohydride alcohol solution 4mL, continue stirring for 10min to obtain 20mL4×10 -4 mol / L Cu nanoparticle sol.

[0028] Preparation of CCu: Weigh 0.1426g of sucrose and dissolve it in 39.5mL of absolute ethanol to prepare the alcohol solution of sucrose, add 0.5mL of the above sol to the alcohol solution of sucrose to obtain a mixed solution, then transfer the mixed solution into 50mL In a tetrafluoroethylene-lined reaction kettle, cover and tighten, react at 200°C for 5 hours to prepare a solution containing CCu, centrifuge the solution to obtain a solid phase, wash twice with deionized water and absolute ethanol , and dry the solid phase at ...

Embodiment 2

[0033] Preparation of hollow structure SrY coated with metal nanoparticles 1.9 o 4 : Dy 0.1 3+ Au 1×10 -2

[0034] Preparation of Au nanoparticle sol: Weigh 41.2 mg of chloroauric acid (AuCl 3 ·HCl·4H 2 O) Dissolve in 10mL of deionized water; when the chloroauric acid is completely dissolved, weigh 14mg of sodium citrate and 6mg of cetyltrimethylammonium bromide, and dissolve them into the chloroauric acid aqueous solution under magnetic stirring Medium; Weigh 3.8mg of sodium borohydride and 17.6mg of ascorbic acid and dissolve them in 10mL deionized water respectively to obtain 10mL concentration of 1×10 -2 mol / L sodium borohydride aqueous solution and 10mL concentration is 1×10 -2 mol / L ascorbic acid aqueous solution; in the environment of magnetic stirring, first add 5mL sodium borohydride aqueous solution to the chloroauric acid aqueous solution, stir and react for 5min, then add 5mL1×10 -2 mol / L ascorbic acid aqueous solution, and then continue to react for 30min ...

Embodiment 3

[0039] Preparation of hollow structure SrY coated with metal nanoparticles 1.995 o 4 :Tm 0.005 3+ Ag 2.5×10 -4:

[0040] Preparation of Ag nanoparticles sol: weigh 3.4 mg silver nitrate (AgNO 3 ) into 18.4mL of deionized water; when the silver nitrate is completely dissolved, weigh 42mg of sodium citrate and dissolve it in the silver nitrate aqueous solution under magnetic stirring; weigh 5.7mg of sodium borohydride and dissolve it in 10mL of deionized water, Obtain 10mL concentration as 1.5×10 -2 mol / L sodium borohydride aqueous solution; under the environment of magnetic stirring, add 1.6mL1.5×10 -2 mol / L sodium borohydride aqueous solution, and then continue to react for 10min to obtain 20mL Ag content of 1×10 -3 mol / L of Ag nanoparticles sol.

[0041] Preparation of CAg: Weigh 3.003g of glucose and dissolve it in 35mL of absolute ethanol to prepare an alcoholic solution of glucose, add 5mL of the above sol to the alcoholic solution of glucose to obtain a mixed solu...

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Abstract

The invention belongs to the field of luminescent materials, and discloses a metal-nanoparticle-doped yttrium oxide strontium luminescent material and a preparation method thereof, the chemical general formula of the luminescent material is SrY2-xO4:Lnx <3+> @ My; wherein, SrY2-xO4:Lnx <3+> is a casing, @ is coating, M is an inner core; Ln is at least one of Tm and Dy, M is at least one of Ag, Au, Pt, Pd and Cu, x is greater than 0 and less than or equal to 0.1, y is molar ratio of SrY2-xO4:Lnx <3+>, and y is greater than 0 and less than or equal to 1 * 10<-2>. By introduction of metal nanoparticles, fluorescent powder luminescence can be increased by doping the M metal nanoparticles, and luminescence efficiency of the metal-nanoparticle-doped yttrium oxide strontium luminescent material can be improved greatly in same excitation conditions.

Description

technical field [0001] The invention relates to the field of luminescent materials, in particular to a yttrium strontium oxide luminescent material doped with metal nanoparticles and a preparation method thereof. Background technique [0002] Field Emission Display (FED) is a flat panel display technology with great development potential. The working voltage of the field emission display device is lower than that of the cathode ray tube (CRT), usually less than 5kV, but the working current density is relatively large, generally in the range of 10-100μA·cm -2 . Therefore, the requirements for luminescent powders used in field emission displays are higher, such as better chromaticity, higher luminous efficiency at low voltages, and no brightness saturation at high current densities. At present, the research on luminescent powder for field emission display mainly focuses on two aspects: one is to use and improve the existing luminescent powder for cathode ray tube; the other ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78C09K11/02B82Y30/00
Inventor 周明杰王荣
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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