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Water corroded red YVO4:Eu<3+> luminescent material and preparation method thereof

A luminescent material and water corrosion technology, which is applied in the direction of luminescent materials, chemical instruments and methods, can solve the problems of small reduction in the mass of luminescent materials, cumbersome and complicated processes, and low repeatability, and achieve low cost, solve cumbersome and complex processes, easily repeatable effect

Active Publication Date: 2015-11-18
JIANGXI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the patent of the present invention is to propose a water corrosion red YVO 4 :Eu 3+ Luminescent material, the water corrodes red YVO 4 :Eu 3+ Luminescent materials can not only improve red YVO 4 :Eu 3+ The luminescent performance of the luminescent material, and the preparation process is simple, the cost is low, and it is easy to repeat, which solves the current problem of improving YVO 4 :Eu 3+ The luminescent performance of luminescent materials is cumbersome and complex, with low repeatability and high cost. It was found in the experiment that deionized water has a negative effect on red YVO 4 :Eu 3+ The surface of the luminescent material has a very weak corrosion effect, and the red YVO after corrosion by deionized water 4 :Eu 3+ The luminous intensity of the luminescent materials is higher than that of the uncorroded red YVO 4 :Eu 3+ The luminous intensity of the luminescent material, due to the effect of deionized water on YVO 4 :Eu 3+ The corrosion effect on the surface of the luminescent material is very weak, so the red YVO after water corrosion 4 :Eu 3+ The mass reduction of the luminescent material is very small, and deionized water has little effect on the red YVO 4 :Eu 3+ The corrosion effect of the luminescent material is actually on the red YVO 4 :Eu 3+ Surface modification of luminescent materials reduces red YVO 4 :Eu 3+ Defects on the surface of the luminescent material, which can improve the red YVO 4 :Eu 3+ Luminescent Properties of Luminescent Materials

Method used

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  • Water corroded red YVO4:Eu&lt;3+&gt; luminescent material and preparation method thereof
  • Water corroded red YVO4:Eu&lt;3+&gt; luminescent material and preparation method thereof
  • Water corroded red YVO4:Eu&lt;3+&gt; luminescent material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0017] 1) According to the chemical composition expression YVO 4(1-x) :Eu 3+ x , the value of X is 0.01, and the raw material Y (NO 3 ) 3 ·6H 2 O, Eu(NO 3 ) 3 ·6H 2 O, Na 3 VO 4 12H 2 O and PVP; weigh 0.99mmol (ie 0.3791g) Y(NO 3 ) 3 ·6H 2 O, 0.01mmol (ie 0.0044g) Eu(NO 3 ) 3 ·6H 2 O, 0.75mmol (ie 0.3001g) Na 3 VO 4 12H 2 O and 0.05g PVP;

[0018] 2) Will weigh the good Na 3 VO 4 12H 2 O and PVP were dissolved in 1ml of absolute ethanol and 8ml of ethylene glycol, called solution 1; then the weighed Y (NO 3 ) 3 ·6H 2 O and Eu(NO 3 ) 3 ·6H 2 O was dissolved in 9ml of ethylene glycol, called solution 2; solutions 1 and 2 were sonicated for 30 minutes respectively, and the ultrasonic solution 2 was dropped into solution 1 drop by drop, after being completely mixed, stirred for 5 minutes, and then added 17ml Deionized water, continue to stir for 5 minutes; pour the final solution into a 50ml reaction kettle, and react at 200°C for 2 hours;

[0019] 3) Th...

Embodiment 2

[0022] 1) obtain YVO by the step 1-4 of embodiment 1 4(0.99) :Eu 3+ 0.01 Luminescent material;

[0023] 2) The obtained YVO 4(0.99) :Eu 3+ 0.01 Soak the luminescent material in 5ml of deionized aqueous solution, ultrasonic for 30 minutes, then stand still for 24 hours, centrifuge, wash with absolute ethanol for 3 times, and then get the YVO after water corrosion 4(0.99) :Eu 3+ 0.01 Luminescent material.

Embodiment 3

[0025] 1) obtain YVO by the step 1-4 of embodiment 1 4(0.99) :Eu 3+ 0.01 Luminescent material;

[0026] 2) The obtained YVO 4(0.99) :Eu 3+ 0.01 Soak the luminescent material in 10ml of deionized aqueous solution, ultrasonic for 30 minutes, then stand still for 24 hours, centrifuge, wash with absolute ethanol for 3 times, and then get the YVO after water corrosion 4(0.99) :Eu 3+ 0.01 Luminescent material.

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Abstract

The invention relates to a water corroded red YVO4:Eu<3+> luminescent material and a preparation method thereof. The formula of the chemical composition of the red YVO4:Eu<3+> luminescent material is YVO4(1-X):Eu<X><3+>; X is greater than 0 and not greater than 0.05; the chromaticity coordinate of the YVO4(1-X):Eu<X><3+> is red; and the luminescence intensity of the deionized water corroded YVO4(1-X):Eu<X><3+> luminescent material is higher than the luminescence intensity of an uncorroded YVO4(1-X):Eu<X><3+> luminescent material. The preparation method of the water corroded red YVO4:Eu<3+> luminescent material has the advantages of simplicity, low cost, easy repetition, and small weight loss of the material, and solves the problems of tedious and complex process, low repetition and high cost of present technologies for improving the luminescence performance of YVO4:Eu<3+> luminescent materials. The water corroded high-performance YVO4:Eu<3+> luminescent material can be well used in red luminescent devices as a red luminescent material.

Description

technical field [0001] The invention belongs to the technical field of rare earth luminescent materials, and relates to a water-corroded red YVO 4 :Eu 3+ The luminescent material, and the invention also relates to a preparation method of the luminescent material. Background technique [0002] Vanadate luminescent materials have good chemical stability, and have strong absorption in the ultraviolet region, and can efficiently transfer the absorbed energy to rare earth active ions to emit light of various colors. Therefore, vanadate Salt-based luminescent materials are a class of promising luminescent materials, among which, YVO 4 :Eu 3+ The quantum efficiency of luminescent materials is as high as 70%, and they are widely used in cathode ray tubes, high-pressure mercury lamps and field emission displays. In recent years, YVO 4 :Eu 3+ Luminescent materials have been widely concerned in the research field of rare earth luminescent materials. The main research is how to fur...

Claims

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Application Information

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IPC IPC(8): C09K11/82
Inventor 唐鹿周青
Owner JIANGXI UNIV OF TECH