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Oxide fluorescent powder and preparation method thereof

A phosphor and oxide technology, applied in chemical instruments and methods, luminescent materials, etc., can solve problems such as insufficient luminous efficiency, performance needs to be improved and improved, and achieve good luminous performance, improved electrical conductivity, and high luminous intensity. Effect

Inactive Publication Date: 2011-10-12
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

For oxide phosphors, such as the widely used red powder Y 2 o 3 :Eu, its stability is good, but the luminous efficiency is not high enough under the bombardment of low-voltage electron beams, and the materials are all non-conductive insulators, and the performance needs to be improved and improved

Method used

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  • Oxide fluorescent powder and preparation method thereof
  • Oxide fluorescent powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh 37.9180g Y(NO 3 ) 3 ·6H 2 O and 0.4441g Eu(NO 3 ) 3 ·6H 2 O is dissolved in deionized water, and 100 mL of Y and Eu aqueous solutions with a concentration of 1 mol / L are prepared, where Eu:Y=1:99. Measure 4mL of Y and Eu aqueous solution with a concentration of 1mol / L, add 1mL of deionized water, 35mL of absolute ethanol, 3.0742g of citric acid and 5g of polyethylene glycol 10000. After stirring for 4h under the condition of 60℃ water bath, a clear solution is obtained. Y and Eu precursor solution, and then the precursor solution was placed in an oven at 90°C for 40 hours to obtain a uniform colloid containing Y and Eu.

[0032] Weigh or measure 2.1292g Zn(CH 3 COO) 2 ·2H 2 O, 0.1125g Al(NO 3 ) 3 ·9H 2 O and 0.6mLC 2 H 7 Place NO in a container, add ethylene glycol methyl ether to 50 mL, and stir for 4 hours under a water bath at 60°C to obtain a clear precursor solution. Then the precursor solution is aged in an oven at 60°C for 70 hours to obtain uniform AZO colloi...

Embodiment 2

[0035] Weigh 76.5254g Y(NO 3 ) 3 ·6H 2 O and 0.0892Eu(NO 3 ) 3 ·6H 2 O is dissolved in deionized water, and 100 mL of Y and Eu aqueous solutions with a concentration of 2mol / L are prepared, where Eu:Y=1:999. Measure 20 mL of Y and Eu aqueous solution with a concentration of 2.00 mol / L, add 20 mL of absolute ethanol, 7.6856 g of citric acid and 8 g of polyethylene glycol 10000, and stir for 6 hours at 50°C in a water bath to obtain clear Y and Eu precursors Then, the precursor solution was aged in an oven at 60°C for 60 hours to obtain a uniform colloid containing Y and Eu.

[0036] Weigh or measure 2.4810g ZnCl 2 ·2H 2 O, 0.1448g AlCl 3 ·6H 2 O and 1.5mL C 4 H 11 NO 2 Place it in a container, add a mixture solution of ethanol and water with a volume ratio of 3:1 to 50 mL, stir for 8 hours in a water bath at 70°C to obtain a uniform precursor solution, and then age the precursor solution in a 60°C oven After 70h, a uniform AZO colloid was obtained.

[0037] Add 6.7 mL of AZO colloi...

Embodiment 3

[0039] Weigh 18.7675g Y(NO 3 ) 3 ·6H 2 O and 0.4461g Eu(NO 3 ) 3 ·6H 2 O is dissolved in deionized water, and 100 mL of Y and Eu aqueous solutions with a concentration of 0.5 mol / L are prepared, where Eu:Y=1:49. Measure 8 mL of Y and Eu aqueous solution with a concentration of 0.50 mol / L, add 32 mL of absolute ethanol, 7.6856 g of citric acid and 2 g of polyethylene glycol 8000, and stir for 6 hours at 40°C in a water bath to obtain clear Y and Eu precursors Then, the precursor solution was aged in an oven at 90°C for 60 hours to obtain a uniform colloid containing Y and Eu.

[0040] Weigh or measure 0.5460g Zn(CH 3 COO) 2 ·2H 2 O, 0.0047g Al(NO 3 ) 3 ·9H 2 O and 0.4mLC 6 H 15 O 3 Place N in a container, add a mixed solution of ethanol and water with a volume ratio of 4:1 to 50 mL, stir for 5 hours in a water bath at 40°C to obtain a uniform precursor solution, and then place the precursor solution in a 60°C oven After aging for 90 hours, a uniform AZO colloid was obtained.

[004...

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Abstract

The invention discloses oxide fluorescent powder and a preparation method thereof. The preparation method comprises the following steps of: preparing Y2-xRexO3 fluorescent powder colloid and AZO colloid respectively, wherein Re is Eu or Tb and x is more than or equal to 0.002 and less than or equal to 0.20; doping the AZO colloid into the Y2-xRexO3 fluorescent powder colloid; drying; and performing high-temperature treatment at the temperature of between 800 and 1,300 DEG C for 0.5 to 6 hours to obtain the oxide fluorescent powder. In the preparation method, a conducting material is doped into the fluorescent powder colloid, so that the conducting property and the luminous intensity of the oxide fluorescent powder are improved.

Description

Technical field [0001] The invention relates to the technical field of luminescent materials, in particular to an oxide phosphor and a preparation method thereof. Background technique [0002] Phosphor powder has a wide range of uses, and its excitation energy forms include electric field, gas discharge, and field emission electrons. With the more and more extensive development and application of high-quality display and lighting devices, phosphors with high efficiency and long service life have become more and more important materials. The fluorescent materials currently used are mostly oxides and sulfur oxide powders activated by zinc sulfide and rare earth ions. For oxide phosphors, such as the more widely used red powder Y 2 O 3 : Eu, its stability is good, but the luminous efficiency under the bombardment of low-voltage electron beam is not high enough, and the materials are all non-conductive insulators, and the performance needs to be improved and improved. Summary of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/80
Inventor 周明杰吕婷王烨文马文波
Owner OCEANS KING LIGHTING SCI&TECH CO LTD