Strontium gallate luminescent material and preparation method thereof

A technology of luminescent materials and gallic acid, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of limited application of field emission light sources, low luminous efficiency of cathode rays, etc., and achieve improved luminous efficiency, less harsh process conditions, and process steps less 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] Strontium gallate has very good chemical stability and thermal stability, and has potential application value in the field of luminescent materials, but its low luminescence efficiency in cathode ray limits its application in field emission light sources

Method used

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  • Strontium gallate luminescent material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of Sr by sol-gel method 0.9 Ga 2 o 4 :Eu 0.1 ,Pd 1×10-5 :

[0029] Preparation of Pd nanoparticle sol: Weigh 0.22 mg palladium chloride (PdCl 2 2H 2 O) Dissolved in 10mL of deionized water; when the palladium chloride was completely dissolved, weigh 11.0mg of sodium citrate and 4.0mg of sodium lauryl sulfate, and dissolve them in an aqueous solution of palladium chloride under a magnetic stirring environment; Weigh 0.38mg sodium borohydride and dissolve it in 100mL deionized water to obtain a concentration of 1×10 -4 mol / L sodium borohydride reducing solution; in the environment of magnetic stirring, quickly add 10mL1×10 -4 sodium borohydride aqueous solution, and then continue to react for 20min to obtain 20mL Pd content of 5×10 -5 mol / L Pd nanoparticle sol.

[0030] Weigh 0.7729g Sr(CH 3 COO) 2 , 2.0698g Ga(CH 3 COO) 3 and 0.1316g Eu(CH 3 COO) 3 Put it in a container, then add 50mL of a mixed solution of ethanol and water with a volume ratio...

Embodiment 2

[0033] Preparation of Sr by sol-gel method 0.8 Ga 2 o 4 :Eu 0.2 ,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 to obtain 20mL Au content of ...

Embodiment 3

[0038] Preparation of Sr by sol-gel method 0.98 Ga 2 o 4 :Eu 0.02 , Ag 2.5×10-4 :

[0039] 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.

[0040] Weigh 0.8296g Sr(NO 3 ) 2 , 2.0459g Ga(NO 3 ) 3 and 0.0270g 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, add 5.7635g of citric acid and 5g of polyethylene glycol 10000 ...

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Abstract

The invention belongs to the field of luminescent materials, and discloses a strontium gallate luminescent material and a preparation method. The chemical general formula of the luminescent material is Sr1-xGa2O4:Eux,My, wherein M is at least one selected from Ag, Au, Pt, Pd and Cu metal nanoparticles, 0<x<=0. 2, and 0<y<=1*10<-2>. According to the strontium gallate luminescent material, because of introduction of In and M metal particles, doping of the metal nanoparticles helps to enhance luminescence of fluorescent powder, and enable the luminescent efficiency of the strontium gallate luminescent material at a same excitation condition to be greatly improved.

Description

technical field [0001] The invention relates to a luminescent material, in particular to a strontium gallate luminescent material 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 is to search for new luminescent materials. The ...

Claims

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Application Information

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IPC IPC(8): C09K11/62
Inventor 周明杰王荣
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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