CN102373058A - Silicate fluorescent material and preparation method thereof - Google Patents

Silicate fluorescent material and preparation method thereof Download PDF

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Publication number
CN102373058A
CN102373058A CN2010102532601A CN201010253260A CN102373058A CN 102373058 A CN102373058 A CN 102373058A CN 2010102532601 A CN2010102532601 A CN 2010102532601A CN 201010253260 A CN201010253260 A CN 201010253260A CN 102373058 A CN102373058 A CN 102373058A
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fluorescent material
preparation
sio
raw material
silicate fluorescent
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CN102373058B (en
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周明杰
马文波
乔延波
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Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Engineering Co Ltd
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Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Engineering Co Ltd
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Abstract

The invention provides a silicate fluorescent material which comprises a fluorescent powder body and metal nano particles doped in the fluorescent powder body. The chemical composition of the silicate fluorescent material is as follows: M[3-15x]CexSiO5:N, wherein M is at least one of Sr, Ba and Ca, and N is at least one of Ag, Au, Pd and Pt metal nano particles. According to the invention, the internal quantum efficiency of a luminescent material can be greatly improved through doping the metal nano particles in the fluorescent powder by virtue of plasma resonance effect generated on the surfaces of the metal nano particles, thereby improving the luminescent intensity and luminescent efficiency of the luminescent material. The invention also provides a preparation method of the silicate fluorescent material.

Description

Silicate fluorescent material and preparation method thereof
[technical field]
The present invention relates to a kind of fluorescent material, relate in particular to a kind of silicate fluorescent material and preparation method thereof.
[background technology]
Energy-conserving and environment-protective are major issues of current each industry development, and the research and development of this respect all are being devoted in countries in the world.For this large electricity consumer of illumination, how reducing its energy consumption is one of emphasis of energy-conserving and environment-protective research.Photodiode (Light Emitting Diode; LED) be considered to most possibly get into a kind of green illumination light source in general lighting field; Have energy-conserving and environment-protective, safety height, long characteristics of life-span; Be widely used in fields such as FPD, traffic lights, car light, demonstrated great application prospect.White light LEDs is described as the new light sources of 21 century most worthy as a kind of novel environmental type solid light source.
Adopt usually in the world at present wavelength be the GaInN based light-emitting diode of 350～470nm as excitation light source, excite yellow fluorescent powder to produce white light.Should possess following characteristics as high-quality LED fluorescent material: emission peak concentrates in some suitable wavelengths scope, and good thermostability is arranged, high-quantum efficiency and excitation light absorbing rate, and powder particle is tiny evenly.Yet up to now, it is few to satisfy the luminescent material kind with wide excitation band (particularly blue-light excited), removes Y 3Al 5O 12: Ce 3+(YAG:Ce) outside the fluorescent material, blue-light excited other luminescent material that higher photoluminescence efficiency arranged down of 450～480nm use less.Therefore, white light LEDs has become luminescent material research field advanced subject with the research and the new system exploration of luminescent material.
The luminescent material of silicate systems has good chemicalstability and thermostability, be in recent years white light LEDs with the focus of luminescent material research.Mainly concentrate on the research of orthosilicate system, for example Sr at present for blue-light excited type silicate fluorescent powder 3SiO 5: Eu 2+Fluorescent material.Compare Sr with YAG:Ce 3SiO 5: Eu 2+Fluorescent material has better temperature profile, under blue-light excited, launches the 570nm gold-tinted, cooperates with the InGaN blue chip to can be made into white light LEDs.Yet luminous intensity, the luminous efficiency of traditional silicate fluorescent material are lower.
[summary of the invention]
Based on this, be necessary to provide higher silicate fluorescent material of a kind of luminous intensity, luminous efficiency and preparation method thereof.
A kind of silicate fluorescent material comprises the fluorescent material body and is entrained in the metal nanoparticle in the fluorescent material body that chemical constitution is: M 3-1.5xCe xSiO 5: N, wherein, M is at least a among Sr, Ba and the Ca, N is at least a in Ag, Au, Pd and the Pt metal nanoparticle, 0＜x≤0.2.
Preferably, the span of said x is 0.001≤x≤0.1.
Under the exciting of blue light, above-mentioned silicate fluorescent material can produce metal surface plasma gunn enhanced yellow green light, and luminous intensity, luminous efficiency are higher.
A kind of preparation method of silicate fluorescent material comprises the steps: to dispose the N solion, and the N ion is Ag +, Au 3+, Pd 2+And Pt 4+In at least a; Sintered glass is immersed in the N solion, the N solion is got in the micropore of sintered glass, after 0.5 hour～24 hours, take out sintered glass, grind into powder behind the cleaning-drying obtains containing N ionic SiO 2Raw material; By chemical constitution M 3-1.5xCe xSiO 5: the stoichiometric ratio of each material among the N takes by weighing M raw material, Ce raw material and contains N ionic SiO 2Raw material, ground and mixed obtains mixing raw material, and wherein, M is at least a among Sr, Ba and the Ca; 0＜x≤0.2; And placing reducing atmosphere to carry out calcination processing mixing raw material, grind the cooling back, promptly obtains M 3-1.5xCe xSiO 5: the N fluorescent material.
Preferably, the N ionic concn is 1 * 10 in the N solion -6Mol/L～1 * 10 -1Mol/L.
Preferably, the N solion is AgNO 3, HAuCl 44H 2O, H 2PtCl 66H 2O or PdCl 22H 2The water of O or ethanolic soln.
Preferably, the M raw material is at least a in oxide compound, nitrate salt, carbonate and the oxalate of M.
Preferably, the Ce raw material is at least a in oxide compound, nitrate salt, carbonate and the oxalate of Ce.
Preferably, the span of said x is 0.001≤x≤0.1.
Preferably, reducing atmosphere is 95%N 2With 5%H 2The mixing reducing atmosphere.
Preferably, calcining temperature is 1350～1500 ℃, and calcination time is 1 hour～8 hours.
Preparing method's technology of above-mentioned silicate fluorescent material is simple, quality product is high, cost is low.Owing to adopt the sintered glass that contains metals ion as SiO 2Raw material makes that metal nanoparticle is uniformly dispersed in the silicate fluorescent material that obtains, and helps that metal surface plasma strengthens luminous realization in the material.In addition, because the specific surface area of sintered glass is big, surfactivity is high, in high temperature solid state reaction, more helps the synthetic of fluorescent material.
[description of drawings]
Fig. 1 is preparing method's schema of the silicate fluorescent material of an embodiment.
Fig. 2 is the Sr of embodiment 1 preparation 2.925Ce 0.05SiO 5: the photoexcitation spectrum of Ag fluorescent material and traditional fluorescent material.
Fig. 3 is the Sr of embodiment 1 preparation 2.925Ce 0.05SiO 5: the photic emmission spectrum of Ag fluorescent material and traditional fluorescent material.
[embodiment]
Below main embodiment and the accompanying drawing of combining silicate luminescent material and preparation method thereof is further described.
The silicate fluorescent material of this embodiment comprises the fluorescent material body and is entrained in the metal nanoparticle in the fluorescent material body that chemical constitution is: M 3-1.5xCe xSiO 5: N.Wherein, M is at least a among Sr, Ba and the Ca.N is at least a in Ag, Au, Pd and the Pt metal nanoparticle.0＜x≤0.2。
Through in fluorescent material, mixing metal nanoparticle, (Surface plasmon, SP) resonance effect improves the luminous intensity of luminescent material to utilize the surface plasma that metal nanoparticle produces.The surface plasma that the metal nanoparticle surface produces is a kind of ripple along metal and medium interface propagation, and its amplitude is exponential attenuation with the distance of leaving the interface.When doping metals particle in luminescent material, (Surface plasmon polaritons, character SPPs), dispersion relation, excitation mode, coupling effect etc. all will produce great variation to surface plasma excimer.The EM field that SPPs causes; Not only can limit light wave propagates in the sub-wavelength dimensions structure; And can produce and control the electromagnetic radiation from the optical frequency to the microwave region, and realize the active that light is propagated is controlled, increase the optical state density and its spontaneous emission rate of enhancing of luminescent material.And, utilize the coupling effect of surface plasma, the internal quantum efficiency of luminescent material be can improve greatly, thereby the luminous intensity and the luminous efficiency of luminescent material improved.Since under blue-light excited, the metal nanoparticle doping M of this method preparation 3-1.5xCe xSiO 5Fluorescent material can produce metal surface plasma gunn enhanced yellow green light, therefore is fit to very much be applied in the white light LEDs.
In preferred embodiment, when the value of x was 0.001≤x≤0.1, the luminous intensity of above-mentioned silicate fluorescent material had bigger raising.
As shown in Figure 1, the preparation method of above-mentioned silicate fluorescent material comprises the steps:
Step S110, preparation N solion.To contain N ionic compound and be dissolved in the solvent, be mixed with concentration range 1 * 10 -6Mol/L～1 * 10 -1The N solion of mol/L.Wherein, contain N ionic compound and can be AgNO 3, HAuCl 44H 2O, H 2PtCl 66H 2O or PdCl 22H 2O, solvent can be water or ethanol.
Step S120, preparation contains M ionic sintered glass.Sintered glass is dipped in the N solion of step (1) preparation 0.5 hour～24 hours, so that the N solion fully enters into the micropore of sintered glass.Take out sintered glass then,, obtain containing N ionic sintered glass with flushing glass surfaces such as deionized waters.
Step S130, preparation contains N ionic SiO 2Raw material.Contain N ionic sintered glass in dry air with what step (2) obtained, grind into powder in mortar obtains N ionic SiO then 2Raw material.
Step S140 takes by weighing M raw material, Ce raw material and contains N ionic SiO 2Raw material, ground and mixed, preparation mixing raw material.Press chemical formula M 3-1.5xCe xSiO 5: the stoichiometric ratio of respective element provides each raw material among the N, mixes to obtain mixing raw material.Wherein, the value of x is 0＜x≤0.2.M is at least a among Sr, Ba and the Ca.The raw material that M is corresponding is at least a in the oxide compound, nitrate salt, carbonate, oxalate of M.The raw material that Ce is corresponding is a kind of in the oxide compound, nitrate salt, carbonate, oxalate of Ce.The raw material that Si is corresponding be step (3) preparation contain N ionic SiO 2Raw material.
Step S150 places reducing atmosphere to carry out calcination processing mixing raw material, the preparation silicate fluorescent material.The mixing raw material that step (4) is prepared places corundum crucible, puts into 95%N 2+ 5%H 2Following 1300 ℃～1600 ℃ calcinings of reducing atmosphere 1～8 hour, products therefrom is cooled to room temperature, takes out the back grinding and promptly obtains M 3-1.5xCe xSiO 5: the N fluorescent material.
Preferably, adopt porosity be 30～40% sintered glass as the Si raw material, the concentration of N metal nano solion is 1 * 10 -6Mol/L～1 * 10 -1Mol/L, metal nanoparticle and SiO in the silicate fluorescent material that obtains 2Mol ratio about 1.8 * 10 -8～1.8 * 10 -3: 1.
Above-mentioned preparation method adopts sintered glass as the Si raw material, helps metal nanoparticle at SiO 2In dispersion, metal nanoparticle is uniformly dispersed in the silicate fluorescent material that finally obtains, and helps metal surface plasma in the material and strengthens luminous realization.Simultaneously, because the specific surface area of sintered glass is big, surfactivity is high, in high temperature solid state reaction, more helps the synthetic of fluorescent material.
Below be the specific embodiment part:
Embodiment 1
The adulterated Sr of silver nano-grain 2.925Ce 0.05SiO 5Preparation of Fluorescent Material, the preparation method may further comprise the steps:
(1) takes by weighing the AgNO of 0.0017g with analytical balance 3, being mixed with 100ml concentration is 1 * 10 -4The Ag of mol/L +The aqueous solution.
(2) get an amount of sintered glass and be dipped into Ag +In the aqueous solution 12 hours.
(3) will fully soak Ag +Sintered glass take out with the surperficial after drying of deionized water rinsing and in mortar grind into powder subsequent use.
(4) the argentiferous sintered glass powder 0.3004g that obtains with analytical balance weighing step (3), Sr 2CO 32.1591g and CeO 20.0430g it is even to be placed in the corundum crucible thorough mixing.
(5) with the mixing raw material in the step (4) at 95%N 2+ 5%H 2Reducing atmosphere following 1450 ℃ the calcining 5 hours, resultant product is cooled to room temperature, promptly obtains Sr after the grinding 2.925Ce 0.05SiO 5: the Ag fluorescent material.
Fig. 2 and Fig. 3 are respectively the Sr of present embodiment preparation 2.925Ce 0.05SiO 5: the photoexcitation and the emmission spectrum of Ag fluorescent material and traditional fluorescent material.Above-mentioned photoexcitation and emmission spectrum are to adopt Tianjin, island RF-5301 type XRF under normal temperature condition, to measure.Among Fig. 2 11 be meant traditional fluorescent material the photoexcitation collection of illustrative plates, 12 are meant the Sr of present embodiment preparation 2.925Ce 0.05SiO 5: the photoexcitation collection of illustrative plates of Ag fluorescent material.Among Fig. 3 21 be meant traditional fluorescent material photic emission collection of illustrative plates, 22 are meant the Sr of present embodiment preparation 2.925Ce 0.05SiO 5: the photic emission collection of illustrative plates of Ag fluorescent material.Can know the Sr of present embodiment by Fig. 2 and Fig. 3 2.925Ce 0.05SiO 5: the Ag fluorescent material has stronger excitation peak at the 430nm place, at the 530nm place stronger emission peak is arranged.Compare with traditional fluorescent material, the fluorescent material of present embodiment has higher luminous intensity and luminous efficiency.
Embodiment 2
The adulterated Ba of silver nano-grain 2.955Ce 0.03SiO 5Preparation of Fluorescent Material, the preparation method may further comprise the steps:
(1) takes by weighing the AgNO of 1.6987g with analytical balance 3, be mixed with the Ag that 100ml concentration is 0.1mol/L +The aqueous solution.
(2) get an amount of sintered glass and be dipped into Ag +In the aqueous solution 10 hours.
(3) will fully soak Ag +Sintered glass take out with the surperficial after drying of deionized water rinsing and in mortar grind into powder subsequent use.
(4) the argentiferous sintered glass powder 0.3004g that obtains with analytical balance weighing step (3), BaCO 32.9157g and CeO 20.0258g it is even to be placed in the corundum crucible thorough mixing.
(5) with the mixing raw material in the step (4) at 95%N 2+ 5%H 2Reducing atmosphere following 1500 ℃ the calcining 8 hours, resultant product is cooled to room temperature, promptly obtains Gd after the grinding 0.4Y 1.5Ce 0.1SiO 5: the Ag fluorescent material.
Embodiment 3
The adulterated Ca of gold nano grain 2.7Ce 0.2SiO 5Preparation of Fluorescent Material, the preparation method may further comprise the steps:
(1) takes by weighing the HAuCl of 0.4119g with analytical balance 44H 2O, being mixed with 1000ml concentration is 1 * 10 -3The Au of mol/L 3+The aqueous solution takes out 1000 times of 1ml redilution, and becoming concentration is 1 * 10 -6The Au of mol/L 3+The aqueous solution.
(2) get an amount of sintered glass and be dipped into Au 3+In the aqueous solution 0.5 hour.
(3) will fully soak Au 3+Sintered glass take out with the surperficial after drying and subsequent use of deionized water rinsing at grind into powder in mortar.
(4) contain golden sintered glass powder 0.3004g, CaCO with what analytical balance weighing step (3) obtained 31.3512g and CeO 20.1721g it is even to be placed in the corundum crucible thorough mixing.
(5) with the mixing raw material in the step (4) at 95%N 2+ 5%H 2Reducing atmosphere following 1350 ℃ the calcining 1 hour, resultant product is cooled to room temperature, promptly obtains Ca after the grinding 2.7Ce 0.2SiO 5: the Au fluorescent material.
Embodiment 4
The adulterated Sr of silver nano-grain 2Ba 0.985Ce 0.01SiO 5Preparation of Fluorescent Material, the preparation method may further comprise the steps:
(1) takes by weighing the AgNO of 0.0849g with analytical balance 3, being mixed with 1000ml concentration is 5 * 10 -4The Ag of mol/L +The aqueous solution.
(2) get an amount of sintered glass and be dipped into Ag +In the aqueous solution 3 hours.
(3) will fully soak Ag +Sintered glass take out with the surperficial after drying of deionized water rinsing and in mortar grind into powder subsequent use.
(4) the argentiferous sintered glass powder 0.3004g that obtains with analytical balance weighing step (3), SrCO 31.4763g, BaCO 30.9719g and CeO 20.0086g it is even to be placed in the corundum crucible thorough mixing.
(5) with the mixing raw material in the step (4) at 95%N 2+ 5%H 2Reducing atmosphere following 1400 ℃ the calcining 4 hours, resultant product is cooled to room temperature, promptly obtains Sr after the grinding 2Ba 0.985Ce 0.01SiO 5: the Ag fluorescent material.
Embodiment 5
The adulterated Ba of gold nano grain 1.5Ca 1.41Ce 0.06SiO 5Preparation of Fluorescent Material, the preparation method may further comprise the steps:
(1) takes by weighing the HAuCl of 0.0206g with analytical balance 44H 2O, being mixed with 1000ml concentration is 5 * 10 -5The Au of mol/L 3+The aqueous solution.
(2) get an amount of sintered glass and be dipped into Au 3+In the aqueous solution 10 hours.
(3) will fully soak Au 3+Sintered glass take out with the surperficial after drying of deionized water rinsing and in mortar grind into powder subsequent use.
(4) contain golden sintered glass powder 0.3004g, BaCO with what analytical balance weighing step (3) obtained 31.4800g, CaCO 30.7056g and CeO 20.0516g it is even to be placed in the corundum crucible thorough mixing.
(5) with the mixing raw material in the step (4) at 95%N 2+ 5%H 2Reducing atmosphere following 1520 ℃ the calcining 4 hours, resultant product is cooled to room temperature, promptly obtains Ba after the grinding 1.5Ca 1.41Ce 0.06SiO 5: the Au fluorescent material.
The above embodiment has only expressed several kinds of embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with accompanying claims.

Claims (10)

1. a silicate fluorescent material is characterized in that, comprises the fluorescent material body and is entrained in the metal nanoparticle in the said fluorescent material body, and chemical constitution is: M 3-1.5xCe xSiO 5: N, wherein, M is at least a among Sr, Ba and the Ca, N is at least a in Ag, Au, Pd and the Pt metal nanoparticle, 0＜x≤0.2.
2. silicate fluorescent material as claimed in claim 1 is characterized in that, the span of said x is 0.001≤x≤0.1.
3. the preparation method of a silicate fluorescent material is characterized in that, comprises the steps:
Configuration N solion, said N ion is Ag +, Au 3+, Pd 2+And Pt 4+In at least a;
Sintered glass is immersed in the said N solion, the N solion is got in the micropore of said sintered glass, after 0.5 hour～24 hours, take out said sintered glass, grind into powder behind the cleaning-drying obtains containing N ionic SiO 2Raw material;
By chemical constitution M 3-1.5xCe xSiO 5: the stoichiometric ratio of each material among the N takes by weighing M raw material, Ce raw material and the said N of containing ionic SiO 2Raw material mixes, and obtains ground and mixed, and wherein, M is at least a among Sr, Ba and the Ca; 0＜x≤0.2; And
Place reducing atmosphere to carry out calcination processing said mixing raw material, grind the cooling back, promptly obtains M 3-1.5xCe xSiO 5: the N fluorescent material.
4. the preparation method of silicate fluorescent material as claimed in claim 3 is characterized in that, the N ionic concn is 1 * 10 in the said N solion -6Mol/L～1 * 10 -1Mol/L.
5. the preparation method of silicate fluorescent material as claimed in claim 3 is characterized in that, said N solion is AgNO 3, HAuCl 44H 2O, H 2PtCl 66H 2O or PdCl 22H 2The water of O or ethanolic soln.
6. the preparation method of silicate fluorescent material as claimed in claim 3 is characterized in that, at least a in oxide compound, nitrate salt, carbonate and the oxalate that said M raw material is M.
7. the preparation method of silicate fluorescent material as claimed in claim 3 is characterized in that, at least a in oxide compound, nitrate salt, carbonate and the oxalate that said Ce raw material is Ce.
8. the preparation method of silicate fluorescent material as claimed in claim 3 is characterized in that, the span of said x is 0.001≤x≤0.1.
9. the preparation method of silicate fluorescent material as claimed in claim 3 is characterized in that, said reducing atmosphere is 95%N 2With 5%H 2The mixing reducing atmosphere.
10. the preparation method of silicate fluorescent material as claimed in claim 3 is characterized in that, said calcining temperature is 1350 ℃～1500 ℃, and calcination time is 1 hour～8 hours.
CN 201010253260 2010-08-13 2010-08-13 Silicate fluorescent material and preparation method thereof Expired - Fee Related CN102373058B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103184048A (en) * 2011-12-28 2013-07-03 北京华美亮材料科技有限公司 Composite fluorescent material and preparation method thereof
CN104059634A (en) * 2013-03-20 2014-09-24 海洋王照明科技股份有限公司 Metal nanoparticles-doped silicate luminescent material and preparation method thereof
US9784419B2 (en) 2012-12-05 2017-10-10 Koninklijke Philips N.V. Light conversion materials based on luminescent metal atomic nanoclusters
CN108559489A (en) * 2018-05-31 2018-09-21 陕西科技大学 The Ca of surface modification2MgSi2O7：Eu2+, Dy3+Long after glow luminous material and preparation method
CN108559488A (en) * 2018-05-31 2018-09-21 陕西科技大学 Copper surface load C a2MgSi2O7：Eu2+, Dy3+The preparation method of long after glow luminous material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101760195A (en) * 2010-01-22 2010-06-30 海洋王照明科技股份有限公司 Silicate blue luminescent material and preparation method thereof
CN101775279A (en) * 2010-01-28 2010-07-14 海洋王照明科技股份有限公司 Fluorescent powder with core-shell structure and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101760195A (en) * 2010-01-22 2010-06-30 海洋王照明科技股份有限公司 Silicate blue luminescent material and preparation method thereof
CN101775279A (en) * 2010-01-28 2010-07-14 海洋王照明科技股份有限公司 Fluorescent powder with core-shell structure and preparation method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103184048A (en) * 2011-12-28 2013-07-03 北京华美亮材料科技有限公司 Composite fluorescent material and preparation method thereof
CN103184048B (en) * 2011-12-28 2016-03-16 北京华美亮材料科技有限公司 Composite fluorescent material and preparation method thereof
US9784419B2 (en) 2012-12-05 2017-10-10 Koninklijke Philips N.V. Light conversion materials based on luminescent metal atomic nanoclusters
CN104059634A (en) * 2013-03-20 2014-09-24 海洋王照明科技股份有限公司 Metal nanoparticles-doped silicate luminescent material and preparation method thereof
CN108559489A (en) * 2018-05-31 2018-09-21 陕西科技大学 The Ca of surface modification2MgSi2O7：Eu2+, Dy3+Long after glow luminous material and preparation method
CN108559488A (en) * 2018-05-31 2018-09-21 陕西科技大学 Copper surface load C a2MgSi2O7：Eu2+, Dy3+The preparation method of long after glow luminous material

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