Yttrium Terbium silicate luminescent material and preparation method thereof

A technology of luminescent material and yttrium silicate, which is applied in the direction of luminescent materials, chemical instruments and methods, can solve the problems of weak luminescent properties of luminescent materials, and achieve the effects of improved luminescent properties, low equipment requirements, and simple processes

Inactive Publication Date: 2012-05-30
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the yttrium terbium silicate luminescent material prepared by the sol-gel method has the disadvantage that the luminescent performance of the obtained luminescent material is relatively weak.

Method used

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  • Yttrium Terbium silicate luminescent material and preparation method thereof
  • Yttrium Terbium silicate luminescent material and preparation method thereof
  • Yttrium Terbium silicate luminescent material and preparation method thereof

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preparation example Construction

[0024] The preparation method of above-mentioned yttrium terbium silicate luminescent material, such as figure 1 As shown, the preparation process is as follows:

[0025] Preparation of step S1, M nanoparticle sol

[0026] 11), using water or ethanol as a solvent, taking a source compound containing M, such as silver nitrate, chloroauric acid, chloroplatinic acid, and palladium chloride as a solute, dissolved in the solvent to prepare an oxidizing agent solution; wherein, M is Ag , at least one of Au, Pt or Pd nanoparticles;

[0027] 12), using water or ethanol as a solvent, hydrazine hydrate, ascorbic acid, and sodium borohydride as a solute, that is, a reducing agent, is prepared into a reducing agent solution;

[0028] 13), under the state of magnetic stirring, dissolve the auxiliary agent into the oxidant solution in the above step 11), and make the content of the auxiliary agent in the finally obtained M nanoparticle sol be 5×10 -4 g / mL~4×10 -3 g / mL; Wherein, the auxi...

Embodiment 1

[0040] 1. Preparation of Pt nanoparticle sol

[0041] Weigh 5.18mg chloroplatinic acid (H 2 PtCl 6 ·6H 2 O) be dissolved in the deionized water of 15.2mL; After chloroplatinic acid dissolves completely, take by weighing 8.0mg sodium citrate and 12.0mg sodium dodecylsulfonate, and dissolve into chloroplatinic acid aqueous solution under the environment of magnetic stirring Medium; Weigh 3.8mg of sodium borohydride and dissolve it in 10mL of deionized water to obtain a concentration of 1×10 in 10mL -2 mol / L sodium borohydride aqueous solution; under the environment of magnetic stirring, according to the ratio of reducing agent to Pt ion molar weight ratio of 4.8:1, add 4.8mL sodium borohydride aqueous solution dropwise to chloroplatinic acid aqueous solution, and then continue the reaction 45min, that is, 20mL Pt content is 5×10 -4 mol / L Pt nanoparticle sol; then add 0.1g of PVP and stir for 14 hours to obtain surface-treated Pt nanoparticles.

[0042] 2. Preparation of yttri...

Embodiment 2

[0049] 1. Preparation of Ag nanoparticles sol

[0050] Weigh 17.0mg silver nitrate (AgNO 3 ) into 17.4mL of deionized water; when the silver nitrate was completely dissolved, weigh 60mg of sodium citrate, and dissolve it in an aqueous solution of silver nitrate under magnetic stirring; weigh 19mg of sodium borohydride and dissolve it in 10mL of deionized water , to obtain a 10mL concentration of 5×10 -2 mol / L sodium borohydride aqueous solution; under the environment of magnetic stirring, according to the ratio of reducing agent to Ag ion molar mass ratio of 1.3:1, add 2.6mL5×10 -2 mol / L sodium borohydride aqueous solution, and then continue to react for 30min to obtain 20mL silver content of 5×10 -3 mol / L Ag nanoparticle sol; then add 0.2g of PVP, and stir for 8h to obtain surface-treated Ag nanoparticles.

[0051] 2. Preparation of yttrium terbium silicate luminescent material doped with Ag nanoparticles

[0052] 1) Fully mix 2.0 mL of distilled water and 10 mL of absolu...

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Abstract

The invention belongs to the field of luminescent materials and discloses a Yttrium Terbium silicate luminescent material and a preparation method thereof. The Yttrium Terbium silicate luminescent material has the general formula as follows: Y(2-x)SiO5Tb[x]M, wherein M is at least one selected from the group consisting of Ag particle, Au particle, Pt particle and Pd particle, and x is more than 0but equal to or less than 0.5. The yttrium Terbium silicate luminescent material has a simple process and no strict requirements for equipment. The luminescent property of the luminescent material isgreatly improved by doping metal particles as compared to before doping metal particles.

Description

technical field [0001] The invention relates to the field of luminescent materials, in particular to a yttrium terbium silicate luminescent material doped with metal particles. The invention also relates to a preparation method of yttrium terbium silicate luminescent material. Background technique [0002] In recent years, field emission devices have attracted much attention due to their advantages such as low operating voltage, low power consumption, no need for deflection coils, no X-ray radiation, and resistance to radiation and magnetic field interference. The combination of field emission cathodes and luminescent materials can obtain high brightness, high The color rendering field emission light source can be used in fields such as display, various indications, and general lighting. [0003] One of the key factors in the preparation of field emission devices with good performance is the preparation of high-performance luminescent material bodies. Most of the current c...

Claims

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Application Information

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IPC IPC(8): C09K11/79
Inventor 周明杰王荣马文波
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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