CN104119868A - Strontium aluminate red luminescent material and preparation method thereof - Google Patents
Strontium aluminate red luminescent material and preparation method thereof Download PDFInfo
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Abstract
The invention belongs to the field of luminescent materials, and discloses a strontium aluminate red luminescent material and a preparation method thereof. The chemical general formula of the luminescent material is Sr3-xGa2O6:Eux<3+>,My, wherein M is at least one selected from Ag, Au, Pt, Pd and Cu, 0<x<=0.3, and 0<y<=1*10<-2>. According to the provided strontium aluminate red luminescent material, because of introduction of M metal particle, doping of the M metal nanoparticle helps to enhance luminescence of fluorescent powder, and enables the luminescent efficiency of the strontium aluminate red luminescent material at a same excitation condition to be greatly improved.
Description
Technical Field
The invention relates to a luminescent material, in particular to a strontium aluminate red luminescent material and a preparation method thereof.
Background
White light LEDs (1 light emitting diodes) have the advantages of high efficiency, long service life, small volume, quick response, no pollution, energy conservation and the like, and are more and more widely regarded. One of the main ways to realize white light is blue GaN chip and yellow YAG: the Ce phosphor combination produces white light. The disadvantage of this method is the low color rendering index. The white light LED composed of the near ultraviolet LED chip and the red, green and blue phosphor has high luminous efficiency, adjustable color temperature and high color rendering index, has been widely researched and becomes the mainstream of the current development. Therefore, LED three-primary-color phosphors that can be effectively excited by violet light and near ultraviolet light are being widely studied. . Among them, the luminescent material using silicate system as matrix has the characteristics of abundant raw material source, low price, wide process adaptability, moderate synthesis temperature, high stability and the like, and attracts people's attention all the time.
Strontium gallate has very good chemical stability and thermal stability, has potential application value in the field of luminescent material application, but has low luminous efficiency, and limits the application in light sources.
Disclosure of Invention
The invention aims to provide a strontium aluminate red luminescent material which has high luminescent efficiency and can be applied to the field of field emission light sources.
The technical scheme of the invention is as follows:
a strontium aluminate red luminescent material with the chemical general formula of Sr3-xGa2O6:Eux 3+,MyWherein M is doped metal nano-particles selected from at least one of Ag, Au, Pt, Pd and Cu, and x is Eu3+The mole number of the substituted Sr ions, x is more than 0 and less than or equal to 0.3, and y is M and Sr3-xGa2O6:Eux 3+Y is more than 0 and less than or equal to 1 x 10-2；Sr3-xGa2O6:Eux 3+Being a luminescent material, Eu3+Is the luminescent ion center, colon ": "means Eu3+And (4) doping.
The strontium aluminate red luminescent material is preferably characterized in that x is more than or equal to 0.005 and less than or equal to 0.2, and y is more than or equal to 1 multiplied by 10-5≤y≤5×10-3。
The invention also provides a preparation method of the strontium aluminate red luminescent material, which comprises the following steps:
mixing and reacting a salt solution of M, an auxiliary agent with a dispersing effect and a reducing agent to obtain M nano particle sol;
according to Sr3-xGa2O6:Eux 3+,MyRespectively measuring ethanol aqueous solutions of salts corresponding to Sr, Ga and Eu according to the stoichiometric ratio of the medium elements, adding a citric acid complexing agent and a polyethylene glycol surfactant, and stirring at 60-80 ℃ for 2-6 h to obtain precursor sol; wherein the molar ratio of citric acid to the sum of three ions of Sr, Ga and Eu is 1-5: 1, and the concentration of polyethylene glycol is 0.05-0.20 g/mL;
drying the precursor sol at 70-150 ℃ for 6-20 h to volatilize the solvent to obtain dry gel, grinding the dry gel, presintering the ground powder in a muffle furnace at 500-900 ℃ for 2-8 h in the air atmosphere, cooling to room temperature to obtain a presintering sample, grinding the presintering sample, then placing the ground presintering sample in a high-temperature box-type furnace at 900-1500 ℃ for calcining for 1-12 h, cooling to room temperature along with the furnace, grinding the obtained sample into powder to obtain the product with the chemical general formula of Sr3-xGa2O6:Eux 3+,MyThe strontium aluminate red luminescent material;
in the above step, M is doped metal nanoparticles selected from at least one of Ag, Au, Pt, Pd and Cu, and x is Eu3+The mole number of the substituted Sr ions, x is more than 0 and less than or equal to 0.3, and y is M and Sr3-xGa2O6:Eux 3+Y is more than 0 and less than or equal to 1 x 10-2。
Preferably, in the preparation method of the strontium aluminate red luminescent material, the concentration of the salt solution of M is 0.8 x 10-4mol/L～1×10-2mol/L。
Preferably, the auxiliary agent is at least one of polyvinylpyrrolidone (PVP), sodium citrate, cetyl trimethyl ammonium bromide, sodium dodecyl sulfate or sodium dodecyl sulfate, and the content of the auxiliary agent in the finally obtained metal nanoparticle sol is 1 × 10-4g/mL～5×10-2g/mL; said reductionThe agent is at least one of hydrazine hydrate, ascorbic acid, sodium citrate or sodium borohydride, and the molar ratio of the addition amount of the reducing agent to M ions is 0.5: 1-10: 1; in practical application, the reducing agent is required to be prepared or diluted to the concentration of 1 × 10-4A water solution of mol/L to 1 mol/L.
In the preparation method of the strontium aluminate red luminescent material, preferably, the salt solution of M, the dispersing auxiliary agent and the reducing agent are mixed and react for 10-45 min.
In the preparation method of the strontium aluminate red luminescent material, preferably, the respective corresponding salts of Sr, Ga and Eu are nitrate or acetate; in the ethanol water solution, the volume ratio of ethanol to water is 3-8: 1.
The ethanol water solution of the corresponding salt of Sr, Ga and Eu is prepared by the following method:
respectively taking oxides and carbonates corresponding to Sr, Ga and Eu as raw materials, dissolving the raw materials in nitric acid, and then adding a mixed solution of ethanol and water in a volume ratio of 3-8: 1 to obtain an ethanol water solution of salts corresponding to Sr, Ga and Eu; or,
respectively taking acetate and nitrate corresponding to Sr, Ga and Eu as raw materials, and dissolving the raw materials in a mixed solution of ethanol and water in a volume ratio of 3-8: 1 to obtain an ethanol water solution of the salt corresponding to Sr, Ga and Eu.
In the preparation method of the strontium aluminate red luminescent material, preferably, the molecular weight of the polyethylene glycol is 100-20000, which can be expressed as 100-20000 of polyethylene glycol, and the following steps are the same; more preferably 2000 to 10000 of polyethylene glycol.
The preparation method of the strontium aluminate red luminescent material is preferable, the value range of x is more than or equal to 0.005 and less than or equal to 0.2, and the value range of y is 1 multiplied by 10-5≤y≤5×10-3。
The strontium aluminate red luminescent material provided by the invention has the advantages that the M metal particles are introduced, and the luminescence of the fluorescent powder is enhanced by doping the M metal nanoparticles, so that the luminous efficiency of the strontium aluminate red luminescent material under the same excitation condition is greatly improved, the wavelength of emitted light is not changed, and the strontium aluminate red luminescent material can be applied to the field emission field.
The preparation method of the strontium aluminate red luminescent material has the advantages of few process steps and relative simplicity; the process conditions are not harsh, easy to achieve and low in cost; no other impurities are introduced, and the obtained luminescent material has high quality and can be widely used for preparing luminescent materials.
Drawings
FIG. 1 is a graph comparing luminescence spectra of a luminescent material prepared in example 3 and a luminescent material of comparative example under excitation at a wavelength of 318 nm; wherein curve 1 is Sr of the doped metal nanoparticle Ag prepared in example 32.88Ga2O6:Eu0.12 3+,Ag2.5×10-4Luminescence spectrum of the luminescent material, curve 2 is Sr of a comparative example of undoped metal nanoparticles2.88Ga2O6:Eu0.12 3+The light emission spectrum of the luminescent material.
Detailed Description
The preferred embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
Example 1
Preparation of Sr by sol-gel method2.7Ga2O6:Eu0.3 3+,Pd1×10-5：
Preparing Pd nano-particle sol: 0.22mg of palladium chloride (PdCl) was weighed out2·2H2O) is dissolved in 10mL of deionized water; after the palladium chloride is completely dissolved, 11.0mg of sodium citrate and 4.0mg of sodium dodecyl sulfate are weighed and dissolved into a palladium chloride aqueous solution under the magnetic stirring environment; 0.38mg of sodium borohydride was weighed out and dissolved in 100mL of deionized water to obtain the concentrationIs 1 × 10-4mol/L sodium borohydride reducing solution; under magnetic stirring, 10mL of 1X 10 solution was added rapidly to the aqueous palladium chloride solution-4Then continuously reacting for 20min to obtain 20mL of solution with the Pd content of 5 multiplied by 10-5mol/L Pd nano-particle sol.
Weighing 1.1106g Sr (CH)3COO)2、1.0349g Ga(CH3COO)3And 0.1974g Eu (CH)3COO)3Placing into a container, adding 50mL of mixed solution of ethanol and water at a volume ratio of 4:1, adding 9.6060g of citric acid and 10g of polyethylene glycol 100 under stirring in 80 deg.C water bath, adding 0.4mL of 5 × 10 concentration-5And stirring the Pd nano-particle sol in mol/L for 2 hours to obtain uniform and transparent precursor sol.
Drying the precursor sol at 70 ℃ for 20h to volatilize the solvent to obtain dry gel, grinding the dry gel into powder, calcining the powder in a high-temperature box type furnace at the constant temperature of 900 ℃ for 2h, calcining the powder at the constant temperature of 1500 ℃ for 1h, and cooling the powder to room temperature to obtain the Sr doped with the Pd nano particles2.7Ga2O6:Eu0.3 3+,Pd1×10-5A red light emitting material.
Example 2
Preparation of Sr by sol-gel method2.8Ga2O6:Eu0.2 3+,Au1×10-2：
Preparation of Au nanoparticle sol: 41.2mg of chloroauric acid (AuCl) are weighed out3·HCl·4H2O) is dissolved in 10mL of deionized water; after the chloroauric acid is completely dissolved, weighing 14mg of sodium citrate and 6mg of hexadecyl trimethyl ammonium bromide, and dissolving into a chloroauric acid aqueous solution under the magnetic stirring environment; 3.8mg of sodium borohydride and 17.6mg of ascorbic acid were weighed out and dissolved in 10mL of deionized water to obtain 10mL of 1X 10-2mol/L aqueous sodium borohydride solution and 10mL of 1X 10-2A mol/L ascorbic acid aqueous solution; stirring under magnetic forceUnder the stirring environment, 5mL of sodium borohydride aqueous solution is added into the chloroauric acid aqueous solution, 5mL of 1 × 10 aqueous solution is added into the chloroauric acid aqueous solution after stirring reaction is carried out for 5min-2The ascorbic acid water solution of mol/L is continuously reacted for 30min to obtain the product with the 20mLAu content of 5 multiplied by 10-3And (3) Au nano-particle sol in mol/L.
0.5803g SrO and 0.3748g Ga are weighed2O3And 0.0704g Eu2O3Heating and dissolving 2mL of concentrated nitric acid and 3mL of deionized water in a container, cooling, adding 50mL of mixed solution of ethanol and water with the volume ratio of 3:1, adding 4.6108g of citric acid and 5.5g of polyethylene glycol 2000 under the condition of stirring in a water bath at 60 ℃, stirring uniformly, adding 4mL of 5 multiplied by 10 concentration-3And stirring the Au nano-particle sol in mol/L for 4 hours to obtain uniform and transparent precursor sol.
Drying the precursor sol at 150 ℃ for 6h to volatilize the solvent to obtain dry gel, grinding the dry gel into powder, calcining the powder in a high-temperature box-type furnace at the constant temperature of 500 ℃ for 8h, calcining the powder at the temperature of 900 ℃ for 12h, and cooling the powder to room temperature to obtain the Sr doped with the Au nano particles2.8Ga2O6:Eu0.2 3+,Au1×10-2A red light emitting material.
Example 3
Preparation of Sr by sol-gel method2.88Ga2O6:Eu0.12 3+,Ag2.5×10-4：
Preparing Ag nano-particle sol: weighing 3.4mg silver nitrate (AgNO)3) Dissolving into 18.4mL of deionized water; after the silver nitrate is completely dissolved, weighing 42mg of sodium citrate, and dissolving the sodium citrate into a silver nitrate water solution under the magnetic stirring environment; 5.7mg of sodium borohydride was weighed out and dissolved in 10mL of deionized water to obtain 10mL of 1.5X 10-2mol/L sodium borohydride water solution; under the magnetic stirring environment, 1.6 mL1.5X10 is added into the silver nitrate water solution at one time-2mol/L sodium borohydride aqueous solution, then continuingReacting for 10min to obtain 20mL of the product with Ag content of 1 × 10-3mol/L Ag nano-particle sol.
Weighing 1.2190g Sr (NO)3)2、1.0230g Ga(NO3)3And 0.0811g Eu (NO)3)3Placing into a container, adding 50mL mixed solution of ethanol and water at volume ratio of 8:1, adding 5.7635g citric acid and 5g polyethylene glycol 10000 under stirring in 70 deg.C water bath, stirring well, adding 0.5mL 1 × 10-3And stirring the Ag nano-particle sol in mol/L for 4 hours to obtain uniform and transparent precursor sol.
Drying the precursor sol at 120 ℃ to volatilize the solvent for 8h to obtain dry gel, grinding, presintering in a muffle furnace at 800 ℃ for 6h, grinding, calcining at 1200 ℃ for 6h, cooling along with the furnace to room temperature, grinding the obtained sample into powder to obtain the Sr doped with the metal nano-particle Ag2.88Ga2O6:Eu0.12 3+,Ag2.5×10-4A luminescent material.
FIG. 1 is a graph comparing luminescence spectra of a luminescent material prepared in example 3 and a luminescent material of comparative example under excitation at a wavelength of 318 nm; wherein curve 1 is Sr of the doped metal nanoparticle Ag prepared in example 32.88Ga2O6:Eu0.12 3+,Ag2.5×10-4Luminescence spectrum of the luminescent material, curve 2 is Sr of a comparative example of undoped metal nanoparticles2.88Ga2O6:Eu0.12 3+The light emission spectrum of the luminescent material.
As can be seen from FIG. 1, the luminescent intensity of the luminescent material after doping the metal nanoparticles is enhanced by 28% compared with that before doping at 618 nm.
Example 4
Preparation of Sr by sol-gel method2.995Ga2O6:Eu0.005 3+,Pt5×10-3：
Preparing Pt-containing nanoparticle sol: 25.9mg of chloroplatinic acid (H) were weighed out2PtCl6·6H2O) is dissolved in 17mL of deionized water; under the condition of magnetic stirring, 400mg of sodium citrate and 600mg of sodium dodecyl sulfate are dissolved in the chloroplatinic acid solution; weighing 1.9mg of sodium borohydride and dissolving in 10mL of deionized water to obtain a solution with the concentration of 5 multiplied by 10-3mol/L sodium borohydride solution; at the same time, 10mL of the solution with a concentration of 5X 10 is prepared-2A hydrazine hydrate solution of mol/L; under the condition of magnetic stirring, firstly, 0.4mL of the sodium borohydride solution is dripped into the chloroplatinic acid solution, after 5min of reaction, 2.6mL of the hydrazine hydrate solution is added into the chloroplatinic acid solution, and the reaction is continued for 40min, so that 20mL of Pt nano particles with the concentration of 2.5 multiplied by 10 are obtained-3Sol of mol/L.
0.8843g of SrCO were weighed out3、0.6389gGa2(CO3)3And 0.0024g Eu2(CO3)3Heating and dissolving in 6mL of dilute nitric acid in a container, cooling, adding 50mL of mixed solution of ethanol and water with the volume ratio of 3:1, adding 7.6848g of citric acid and 7.5g of polyethylene glycol 200 under the condition of stirring in a water bath at 65 ℃, adding 4mL of 2.5 multiplied by 10 after stirring uniformly-3And stirring the Pt nano particle sol in mol/L for 4 hours to obtain uniform and transparent precursor sol.
Drying the precursor sol at 100 ℃ for 8h to volatilize the solvent to obtain dry gel, grinding the dry gel into powder, calcining the powder in a high-temperature box-type furnace at the constant temperature of 700 ℃ for 5h, calcining the powder at 1300 ℃ for 6h, and cooling the powder to room temperature to obtain the Sr doped with the Pt nano particles2.995Ga2O6:Eu0.005 3+,Pt5×10-3A red light emitting material.
Example 5
Preparation of Sr by sol-gel method2.9Ga2O6:Eu0.1 3+,Cu1×10-4：
Preparation of Cu nanoparticle sol: 1.6mg of copper nitrate was weighed and dissolved in 16mL of ethanol, after complete dissolution, 2mg of PVP was added while stirring, and then 1X 10 solution of 0.4mg of sodium borohydride in 10mL of ethanol was slowly dropped-34mL of mol/L sodium borohydride alcohol solution is added, and the stirring reaction is continued for 10min to obtain 20mL of 4X 10-4mol/L Cu nanoparticle sol.
Weighing 1.2275g Sr (NO)3)2、1.0230g Ga(NO3)3And 0.0676g Eu (NO)3)3Placing in a container, adding 50mL of mixed solution of ethanol and water at volume ratio of 4:1, adding 3.4581g of citric acid and 2.5g of polyethylene glycol 20000 under stirring in water bath at 60 deg.C, stirring, adding 0.5mL of 4 × 10-4And stirring the Cu nano particle sol in mol/L for 6 hours to obtain uniform and transparent precursor sol.
Drying the precursor sol at 80 ℃ for 15h to volatilize the solvent to obtain dry gel, grinding the dry gel into powder, calcining the powder in a high-temperature box-type furnace at the constant temperature of 600 ℃ for 5h, calcining the powder at 1400 ℃ for 3h, and cooling the powder to room temperature to obtain Sr doped with Cu nano particles2.9Ga2O6:Eu0.1 3+,Cu1×10-4A red light emitting material.
Example 6
Preparation of Sr by sol-gel method2.96Ga2O6:Eu0.04 3+,(Ag0.5/Au0.5)1.25×10-3：
Ag0.5/Au0.5Preparing nano-particle sol: 6.2mg of chloroauric acid (AuCl) are weighed out3·HCl·4H2O) and 2.5mg AgNO3Dissolving into 28mL of deionized water; after complete dissolution, 22mg of sodium citrate and 20mg of PVP are weighed and dissolved into the mixed solution under the magnetic stirring environment; weighing 380mg of newly prepared sodium borohydride, dissolving the sodium borohydride in 10mL of deionized water,obtaining 10mL of sodium borohydride aqueous solution with the concentration of 1 mol/L; under the magnetic stirring environment, 0.3mL of 1mol/L sodium borohydride aqueous solution is added into the mixed solution at one time, and then the reaction is continued for 20min, thus obtaining 30mL of the mixed solution with the total metal concentration of 1 multiplied by 10-3mol/L Ag/Au nano-particle sol.
0.3067g SrO and 0.3748g Ga are weighed2O3And 0.0141g Eu2O3Heating and dissolving 2mL of concentrated nitric acid and 1mL of deionized water in a container, cooling, adding 50mL of mixed solution of ethanol and water with the volume ratio of 3:1, adding 3.8424g of citric acid and 6.36g of polyethylene glycol 4000 under the condition of stirring in a water bath at 70 ℃, adding 2.5mL of 1 × 10 concentration after stirring uniformly-3And stirring the Ag/Au nano-particle sol in mol/L for 4 hours to obtain uniform and transparent precursor sol.
Drying the precursor sol at 100 ℃ for 12h to volatilize the solvent to obtain dry gel, grinding the dry gel into powder, calcining the powder in a high-temperature box type furnace at the constant temperature of 600 ℃ for 6h, calcining the powder at 1450 ℃ for 4h, and cooling the powder to room temperature to obtain the Sr doped with the Ag/Au nano particles2.96Ga2O6:Eu0.04 3+,(Ag0.5/Au0.5)1.25×10-3A red light emitting material.
It should be understood that the above description is illustrative of the preferred embodiment of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (10)
1. The strontium aluminate red luminescent material is characterized in that the chemical general formula is Sr3-xGa2O6:Eux 3+,MyWherein M is doped metal nano-particles selected from at least one of Ag, Au, Pt, Pd and Cu, and x is Eu3+The mole number of the substituted Sr ions, x is more than 0 and less than or equal to 0.3, and y is M and Sr3-xGa2O6:Eux 3+Y is more than 0 and less than or equal to 1 x 10-2。
2. The strontium aluminate red luminescent material of claim 1, wherein x is in the range of 0.005. ltoreq. x.ltoreq.0.2, and y is in the range of 1 x 10-5≤y≤5×10-3。
3. The strontium aluminate red luminescent material of claim 1, comprising one of the following luminescent materials:
Sr2.7Ga2O6:Eu0.3 3+,Pd1×10-5；Sr2.8Ga2O6:Eu0.2 3+,Au1×10-2；
Sr2.88Ga2O6:Eu0.12 3+,Ag2.5×10-4；Sr2.995Ga2O6:Eu0.005 3+,Pt5×10-3；
Sr2.9Ga2O6:Eu0.1 3+,Cu1×10-4；Sr2.96Ga2O6:Eu0.04 3+,(Ag0.5/Au0.5)1.25×10-3。
4. the preparation method of the strontium aluminate red luminescent material is characterized by comprising the following steps of:
mixing and reacting a salt solution of M, an auxiliary agent with a dispersing effect and a reducing agent to obtain M nano particle sol;
according to Sr3-xGa2O6:Eux 3+,MyRespectively measuring ethanol aqueous solutions of salts corresponding to Sr, Ga and Eu according to the stoichiometric ratio of the medium elements, adding a citric acid complexing agent and a polyethylene glycol surfactant, and stirring at 60-80 ℃ for 2-6 h to obtain precursor sol; wherein the molar ratio of citric acid to the sum of three ions of Sr, Ga and Eu is 1-5: 1, and the concentration of polyethylene glycol is 0.05-0.20 g/mL;
drying the precursor sol at 70-150 ℃ for 6-20 h to volatilize the solvent to obtain dry gel, and grinding the dry gelGel, placing the ground powder in a muffle furnace in the air atmosphere for pre-sintering at 500-900 ℃ for 2-8 hours, cooling to room temperature to obtain a pre-sintered sample, grinding the pre-sintered sample, then placing the ground pre-sintered sample in a high-temperature box-type furnace for calcining at 900-1500 ℃ for 1-12 hours, cooling to room temperature along with the furnace, grinding the obtained sample into powder, and obtaining the Sr-based chemical general formula3-xGa2O6:Eux 3+,MyThe strontium aluminate red luminescent material;
in the above step, M is doped metal nanoparticles selected from at least one of Ag, Au, Pt, Pd and Cu, and x is Eu3+The mole number of the Sr ions is replaced by the subgroups, x is more than 0 and less than or equal to 0.3, and y is M and Sr3-xGa2O6:Eux 3+Y is more than 0 and less than or equal to 1 x 10-2。
5. The method for preparing strontium aluminate red luminescent material according to claim 4, wherein the concentration of the salt solution of M is 0.8 x 10-4mol/L～1×10-2mol/L。
6. The method for preparing strontium aluminate red luminescent material according to claim 4, wherein the assistant is at least one of polyvinylpyrrolidone, sodium citrate, cetyl trimethyl ammonium bromide, sodium dodecyl sulfate or sodium dodecyl sulfonate, and the content of the assistant in the finally obtained metal nanoparticle sol is 1 x 10-4g/mL～5×10-2g/mL; the reducing agent is at least one of hydrazine hydrate, ascorbic acid, sodium citrate or sodium borohydride, and the molar ratio of the addition amount of the reducing agent to M ions is 0.5: 1-10: 1; the salt solution of M, the auxiliary agent with the dispersing function and the reducing agent are mixed and react for 10-45 min.
7. The method for preparing strontium aluminate red luminescent material according to claim 4, wherein the respective corresponding salts of Sr, Ga and Eu are nitrate or acetate; in the ethanol water solution, the volume ratio of ethanol to water is 3-8: 1.
8. The method for preparing the strontium aluminate red luminescent material of claim 4, wherein the molecular weight of the polyethylene glycol is 100 to 20000.
9. The method for preparing the strontium aluminate red luminescent material of claim 8, wherein the molecular weight of the polyethylene glycol is 2000-10000.
10. The method for preparing strontium aluminate red luminescent material according to claim 4, wherein x is 0.005-0.2, and y is 1 x 10-5≤z≤5×10-3。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104946254A (en) * | 2015-06-02 | 2015-09-30 | 杭州萤鹤光电材料有限公司 | Rare earth ion-activated multiphase fluorescent material |
| CN115417444A (en) * | 2022-09-22 | 2022-12-02 | 五邑大学 | Red oxide fluorescent powder excited by blue light and preparation method and application thereof |
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| CN102477293A (en) * | 2010-11-23 | 2012-05-30 | 海洋王照明科技股份有限公司 | Electroluminescent material and preparation method thereof |
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| CN102477293A (en) * | 2010-11-23 | 2012-05-30 | 海洋王照明科技股份有限公司 | Electroluminescent material and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104946254A (en) * | 2015-06-02 | 2015-09-30 | 杭州萤鹤光电材料有限公司 | Rare earth ion-activated multiphase fluorescent material |
| CN104946254B (en) * | 2015-06-02 | 2017-04-12 | 杭州萤鹤光电材料有限公司 | Rare earth ion-activated multiphase fluorescent material |
| CN115417444A (en) * | 2022-09-22 | 2022-12-02 | 五邑大学 | Red oxide fluorescent powder excited by blue light and preparation method and application thereof |
| CN115417444B (en) * | 2022-09-22 | 2024-05-17 | 五邑大学 | A blue light excited red oxide phosphor and its preparation method and application |
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Application publication date: 20141029 |