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Blue luminescent materials and preparation method thereof

A blue luminescent material and general formula technology, applied in the field of blue luminescent material and its preparation, can solve the problems that blue phosphor powder hinders the development of full-color display, and achieve the effects of improved luminous efficiency, easy access, and high quality

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

However, the lack of blue phosphor has been hindering the development of full-color display, so it has been the direction of scientific workers to find high-efficiency, high-stability, high-color-purity blue light-emitting matrix materials.

Method used

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  • Blue luminescent materials and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0027] Preparation of Sr by sol-gel method 2 CeO 4 :Pd 1×10-5 :

[0028] 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.

[0029] Weigh 1.6453g Sr(CH 3 COO) 2 and 1.2690g Ce(CH 3 COO) 3 Put it in a container, then add 50mL of a mixed solution of ethanol and water with a volume ratio of 4:1, add 1.4409g of citric acid and 10...

Embodiment 2

[0032] Preparation of Sr by sol-gel method 2 CeO 4 :Au 1×10-2 :

[0033] 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 5×10 -3 mol / L ...

Embodiment 3

[0037] Preparation of Sr by sol-gel method 2 CeO 4 :Ag 2.5×10-4 :

[0038] 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.

[0039] Weigh 1.6930g Sr(NO 3 ) 2 and 1.4485g Ce(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 1.4408g of citric acid and 5g of polyethylene glycol 10000 under the condition of stirring in a water...

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Abstract

The invention belongs to the field of luminescent materials, and discloses a blue luminescent materials and a preparation method thereof. The chemical general formula of the luminescent material is Sr2CeO4:Mx, wherein M is a metal-doped nanoparticle and is at least one of Ag, Au, Pt, Pd and Cu, x is the molar ratio of M to Sr2CeO4, and 0<x<=1*10<-2>. According to the provided blue luminescent material, because of introduction of the M metal nanoparticle, doping of the metal nanoparticle helps to enhance luminescence of fluorescent powder, and enables the luminescent efficiency of the Sr2CeO4 blue luminescent material at a same excitation condition to be greatly improved without changing the wavelength of an emission ray.

Description

technical field [0001] The invention relates to the field of luminescent materials, in particular to a blue luminescent material and a preparation method thereof. Background technique [0002] In recent years, flat panel display has been paid more and more attention by people. The red powder and green powder in the flat panel full-color display have been respectively made by Eu 3+ and Tb 3+ The compounds were obtained, and achieved very satisfactory commercial results. However, the lack of blue phosphors has been hindering the development of full-color display, so it has been the direction of scientists' efforts to find high-efficiency, high-stability, high-color-purity blue light-emitting host materials. [0003] Oxide-based luminescent powders have good stability and luminescence, and have great application potential in flat panel displays. Sr 2 CeO 4 It is a good blue luminescent powder, the color coordinates are x=0.198, y=0.292, and the emission peak is at 485nm. ...

Claims

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Application Information

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