Fluoride phosphate matrix luminescent material and preparation method thereof

A technology of luminescent materials and fluorophosphate, which is applied in the direction of luminescent materials, chemical instruments and methods, can solve the problems of limited application in lighting and display fields, low luminous efficiency, etc., and achieve improved luminous efficiency, fewer process steps, and better process conditions. harsh 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

Fluorophosphate matrix luminescent materials have the characteristics of good stability, but the luminous efficiency of fluorophosphate matrix luminescent materials prepared in the prior art is not high, which limits its application in the field of lighting and display

Method used

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  • Fluoride phosphate matrix luminescent material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of Na by sol-gel method 2 Gd 0.99 PO 4 f 2 :Tb 0.01 3+ ,Pd 1×10ˉ5 :

[0027] 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 -4mol / 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.

[0028] Weigh 1.0886g CH 3 COONa·3H 2 O, 1.3239g Gd(CH 3 COO) 3 and 0.0132gTb(CH 3 COO) 3 Put it in a container, then add 50mL of a mixed solution of ethanol and water with a ...

Embodiment 2

[0031] Preparation of Na by sol-gel method 2 Gd 0.6 PO 4 f 2 :Tb 0.4 3+ ,Au 1×10 -2

[0032] 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 co...

Embodiment 3

[0036] Preparation of Na by sol-gel method 2 Gd 0.9 PO 4 f 2 :Tb 0.1 3+ , Ag 2.5×10 -4:

[0037] 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.

[0038] Weigh 0.6799g NaNO 3 , 1.2356g Gd(NO 3 ) 3 and 0.1380g Tb(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 concentration of 1×10 under the condition ...

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Abstract

The invention belongs to the field of luminescent materials, and discloses a fluoride phosphate matrix luminescent material and a preparation method thereof, the chemical general formula of the luminescent material is Na2Gd1-xPO4F2:Tbx<3+>,My; wherein M is at least one of Ag, Au, Pt, Pd and Cu, x is greater than 0 and less than or equal to 0.4, y is molar ratio of Na2Gd1-xPO4F2:Tbx<3+>, and y is greater than 0 and less than or equal to 1*10<-2>. By introduction of M metal nanoparticles, fluorescent powder luminescence can be increased by doping the M metal particles, and luminescence efficiency of the fluoride phosphate matrix luminescent material can be improved greatly in same excitation conditions without change of emitted light wavelength.

Description

technical field [0001] The invention relates to the field of luminescent materials, in particular to a fluorophosphate matrix 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/72
Inventor 周明杰王荣
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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