CN102757784A - Silicate red fluorescent powder and preparation method thereof - Google Patents

Silicate red fluorescent powder and preparation method thereof Download PDF

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CN102757784A
CN102757784A CN2012102533745A CN201210253374A CN102757784A CN 102757784 A CN102757784 A CN 102757784A CN 2012102533745 A CN2012102533745 A CN 2012102533745A CN 201210253374 A CN201210253374 A CN 201210253374A CN 102757784 A CN102757784 A CN 102757784A
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red fluorescence
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fluorescence powder
silicate red
fluorescent material
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CN102757784B (en
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梁超
何锦华
符义兵
刘凯
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Jiangsu Borui Photoelectric Co ltd
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JIANGSU BORUI PHOTOELECTRIC CO Ltd
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Abstract

The invention relates to a silicate red fluorescent powder of which the chemical structural formula is Ba(3-a-b-d-k)SraA'bSi(1-c)A'cO(5-q)Fq:Eud,Mk, wherein A' is at least one of Li, Na and K; A' is one of Ge and P; M is at least one of Ce, Mn and Dy; and 0.01<a<=2.8, 0.001<=b<=0.05, 0.0001<=c<=0.2, 0.003<=q<=0.2, 0.03<=d<=0.5, and 0<k<=0.01. The preparation method comprises the following steps: weighing raw materials according to the proportion in the chemical structural formula, evenly mixing, carrying out high temperature roasting in a reducing atmosphere, pulverizing, screening, washing with water, baking, and finally, modifying with a silane coupling agent to obtain the silicate red fluorescent powder. The fluorescent powder has favorable emission efficiency and reasonable excitation spectrum bandwidth, and is beneficial to manufacturing white light LEDs (light-emitting diodes) with high luminous efficiency and high color development.

Description

A kind of silicate red fluorescence powder and preparation method thereof
Technical field
The present invention relates to a kind of silicate red fluorescence powder and preparation method thereof.
Background technology
The significant advantage that white light emitting diode (abbreviation white light LEDs) has than conventional light source at physical dimension, life-span, environmental protection characteristic and aspect such as energy-conservation, thus be expected to become replace compact type energy-saving lamp the 4th generation green illumination light source, with GaN blue-ray LED and Y 3Al 5O 12: Ce 3+(YAG:Ce) yellow emission fluorescent material has become the main flow of current white light LEDs as the technical scheme of the white light of light-converting material realization, and receives countries in the world researchist's concern day by day.As U.S. Pat 5998925 and US6614179B1 to Y/Gd than, Al/Ga when trace element mix and the preparation method aspect is adjusted and optimized.
According to up-to-date technology, surpassed 231lm/W with the luminous efficiency of the white light LEDs of blue led and YAG phosphor combination, surpassed the luminous efficiency of luminescent lamp.While, the cost performance of white light LEDs promoted thereupon along with the reduction gradually of the price of materials such as chip, and the speed that replaces the traditional lighting light source is also being accelerated gradually.The standard of the star of american energy has been released a complete set of technological standard that is applicable to white light LEDs.Through adjusting to YAG:Ce fluorescent material alloying element, can obtain the emission of 565～579nm different colours light, cooperate the white light that can realize different tones with the GaN blue led.
But when getting into the general illumination field, the white light LEDs that with YAG fluorescent material is light-converting material is when realizing efficient white light emission, and colour rendering index is but significantly not enough.As when the 6500K, the colour rendering index of existing conventional white light LEDs differs greatly with the standard of general illumination only between 65 ~ 69.Can reach the lifting colour rendering index through in YAG:Ce, adding rouge and powder, reduce the effect of colour temperature.Can be used for the main flow rouge and powder nitride system of white light LEDs at present, mainly contain Sr 2Si 5N 8: Eu and CaAlSiN 3: two kinds of Eu.But because there is stronger absorption again in this system rouge and powder to yellow green light; When it mixes use with yellow or green emitting phosphor; Although colour rendering index significantly promotes, cause light efficiency significantly to descend, seriously hindered expansion and the application of white light LEDs thus to the indoor universal lighting field.
With the alkaline-earth silicate is matrix, can realize efficient orange red light emission with divalent europium as the fluorescent material of activator.And in the scope of broad, realize the adjusting of emmission spectrum.In U.S. Pat 2004/0090174A1, adopt Al, P, elements such as Ge, B replace the Si in the anionic group in the fluorescent material, to reach the purpose that promotes light efficiency.And in U.S. Pat 2006/0028122A1, adopt Ca, Mg, Zn or Cd to replace Sr, and with F, Cl, Br, I, P, S, N replaces O.But the silicate fluorescent powder that open source literature mentioned above is prepared can only realize that emission wavelength is all less than 600nm; Although therefore this fluorescent material mixes with the yellow-green fluorescence powder when using; Can realize high light efficiency low colour temperature (Tk≤4000K " warm white, but the white light that is difficult to obtain high colour developing.Meanwhile, this system silicate fluorescent powder is met water, and hydrolysis can take place, and also can cause its light efficiency to reduce, and influences final result of use.
Summary of the invention
The red fluorescence powder that the purpose of this invention is to provide a kind of silicate substrate; Make itself and InGaN blue chip emmission spectrum have excellent matching; Have good emission efficiency and rational excitation spectrum bandwidth, help producing the white light LEDs of high light efficiency and high colour developing.
Silicate red fluorescence powder of the present invention, its chemical structural formula is: Ba (3-a-b-d-k)Sr aA ' bSi (1-c)A " cO (5-q)F q: Eu d, M k,
Wherein, A ' is at least a among Li, Na, the K; " be a kind of among Ge, the P, M is at least a among Ce, Mn, the Dy to A; 0.01 < a≤2.8; 0.001≤b≤0.05; 0.0001≤c≤0.2; 0.003≤q≤0.2; 0.03≤d≤0.5; 0 < k≤0.01.
The preparation method of silicate red fluorescence powder of the present invention:
(1) oxide compound, fluorochemical, muriate, carbonate or the nitrate salt with Ba, Sr, Li, Na, K, P, Ge, Eu, Ce, Mn, Dy is raw material, and Si 3N 4With the ammonium salt that contains the F element be raw material, take by weighing required raw material according to the stoichiometric ratio in the chemical structural formula of the top fluorescent material that provides, and mix;
(2) place reducing atmosphere to carry out high-temperature roasting mixed raw materials;
(3) with the powder agglomates that obtains after the high-temperature roasting after pulverizing, sieve, wash, drying, obtain the fluorescent material midbody;
(4) after the fluorescent material midbody that step (3) is obtained carries out surface-treated with silane coupling agent, promptly get.
In the step (2), reducing atmosphere is by N 2And H 2Mixed gas is formed, N 2And H 2Volume ratio 0:100 ~ 70:30.Be preferably 0:100 ~ 25:75, in this scope, more help promoting the reduction of activator Eu.
The temperature of high-temperature roasting is 1300-1600 ℃ in the step (2), and the time is 2-16h.
In the step (4); Described silane coupling agent is preferably a kind of in vinyl three ('beta '-methoxy oxyethyl group) silane, 3-(2-aminoethyl)-aminopropyl methyl dimethoxysilane or 3-(2-the aminoethyl)-aminopropyl trimethoxysilane, and preferably these three kinds of silane coupling agent surface modification effects are better.
In the step (4); Described surface-treated is the known technology of this area; Method for example commonly used has: 1. pretreated filler method (being called for short " dry method "): filler is put into the high-speed solid stirrer; Be sprayed directly on the filler silane coupler solution and stirring then, rotating speed is high more, and dispersion effect is good more.Get final product at 120 ℃ of baking 2-5h at last; 2. silane coupling agent aqueous solution facture (be called for short " wet method "): with the silane coupling agent wiring solution-forming, be generally: silane (20%), alcohol (72%); Water (8%); The coupling agent consumption is generally the 0.3%-2% of fluorescent material total amount, and alcohol adds a small amount of weak acid for ethanol (to Ethoxysilane), methyl alcohol (to methoxy silane) and Virahol (to not being soluble in the silane of ethanol, methyl alcohol); Regulate pH value to 4 ~ 5; Fluorescent material added in the solution of silane fully stir, drying is removed at last and is desolvated and moisture content gets final product.
With Eu as activator (Sr, Ba) 3SiO 5: Eu fluorescent material, the emission peak wavelength that adopts the fluorescent material that conventional preparation method obtains is difficult to make the further red shift of its emission wavelength less than 600nm.The present invention is optimized the prescription of fluorescent material through the polynary coactivator technology of admixing altogether; Simultaneously through adopting novel preparation technology; Rely on prescription and preparing method's synergistic effect; Make with the further red shift of the emmission spectrum of this substrate fluorescent powder, finally can obtain longer emission wavelength, thereby satisfy the application requiring of high colour developing white light.Concrete advantage is following:
(1) through adjusting two kinds of element ratios of Sr and Ba significantly, optimizes crystal field; Through mixing alkalimetal ions such as Li, Na and K, rely on its charge compensation effect simultaneously, effectively promote the fluorescent powder crystal stability of structure; Not only can promote the Eu ion to get into lattice, also improve the chemicalstability of fluorescent material simultaneously to a certain extent, as shown in Figure 6.
(2) replacement through Ge, P pair ion Si and the replacement through F pair ion O can be adjusted the covalency of fluorescent material, bigger can be with splitting thereby make the transition of Eu ionic 4f-5d produce, and then realize the more emission of long-wave band.In addition, when containing F ionic ammonium salt, can also significantly promote the phase transformation reaction process of fluorescent material, effectively reduce synthesis temperature, avoid the crystal grain of fluorescent material too to grow up as reactant.
(3) adopt Si 3N 4As reaction raw materials; On the one hand, rely on the HMP characteristic of nitride, the nitride powder that is dispersed in the powder can play the separated effect of physical areas; Make that fluorescent material is difficult for sticking together and sintering in the calcination process; Can when guaranteeing that light efficiency does not descend, the fluorescent material particle diameter obviously descended, size distribution narrows down simultaneously; On the other hand, adopt Si 3N 4As reaction raw materials, can better promote the reduction of activator ion, realize the more emission of long-wave band.Although Si on the surface 3N 4Oxygen element in this fluorescent material can't be provided, but can know that from the actual synthetic product material phase analysis result who obtains reaction product is the pure single-phase of silicate fluorescent powder.Even more important variation is that obvious red shift has taken place the emission wavelength of fluorescent material, and spike has reached about 610nm, thereby has possessed the condition of processing high colour developing white light; The third aspect adopts Si 3N 4Nitride can further improve the incorporation of Eu as reaction raw materials, improve concentration quenching for volume, this also is to promote one of further red shift reason of emission peak; Fourth aspect is according to the electronic cloud bulking effect, owing to adopt Si 3N 4As reaction raw materials, in synthetic reaction process, have the minor N element and replace the O element, thereby the covalency of fluorescent material is provided, also can promote the red shift of fluorescent material emission wavelength.
(4) silicate red fluorescence powder provided by the invention, its excitation spectrum scope is 220 ~ 510nm, can well avoid taking place the absorption again to yellow green light, thereby can when promoting colour rendering index, obtain higher luminous efficiency.
(5) in method provided by the invention, the N that is adopted 2And H 2Mixed atmosphere in, H 2Ratio to reach at least more than 30%, preferentially adopt high density H 2-N 2Mixed atmosphere can more help promoting the reduction of activator Eu as shielding gas.
Description of drawings
Fig. 1 is the emmission spectrum of the embodiment of the invention 1.
Fig. 2 is the excitation spectrum of the embodiment of the invention 1.
Fig. 3 is the emmission spectrum of the embodiment of the invention 2,3,4 and Comparative Examples 1.
Fig. 4 is the X-ray diffraction spectrum of the embodiment of the invention 1.
The specific conductivity of Fig. 5 embodiment 5 and Comparative Examples 1 phosphor suspension is with the change curve of soak time.
Fig. 6 is the full spectrogram that utilizes the positive white light LEDs that the red fluorescence powder of the embodiment of the invention 1 prepares.
Fig. 7 is the full spectrogram that utilizes the positive white light LEDs that the red fluorescence powder of the embodiment of the invention 5 prepares.
Embodiment
Embodiment 1
Take by weighing BaCO 313.16g, SrCO 3134.15g, LiF0.2g, Si 3N 413.09g, Eu 2O 33.22g, CeO 20.57g, NH 4F0.74g is in the corundum crucible of packing into after mixing, at reducing atmosphere (N 2And H 2Volume ratio is 10:90) under, be heated to 1364 ℃, insulation 12h; Powder agglomates after burning till is pulverized, after sieving, be washed till neutrality with deionized water after, oven dry, use vinyl three ('beta '-methoxy oxyethyl group) silane to carry out dry surface modification at last after, preparing composition is Sr 2.726Ba 0.2Li 0.023Si 0.84Ge 0.16OF 0.083: Eu 0.055, Ce 0.01The silicate red fluorescence powder, its emmission spectrum, excitation spectrum and X-ray diffraction spectrum are seen Fig. 1, Fig. 2 and Fig. 4 respectively.Penetrate collection of illustrative plates by the face of Fig. 4 and can find out that the fluorescent material thing of embodiment 1 is mutually pure, no dephasign.Utilize the full spectrogram of the positive white light LEDs that this fluorescent material prepares to see Fig. 6.
Embodiment 2
Take by weighing BaCO 39.21g, SrCO 3137.79g, Si 3N 415.43g, NaF0.168g, P 2O 50.473g, Eu 2O 34.34g, MnCO 30.3g, in the corundum crucible of packing into after mixing, at reducing atmosphere (N 2And H 2Volume ratio is 20:80) under, be heated to 1480 ℃, insulation 6.5h; Powder agglomates after burning till is pulverized, after sieving, be washed till neutrality with deionized water after, oven dry, use vinyl three ('beta '-methoxy oxyethyl group) silane to carry out dry surface modification at last after, preparing composition is Sr 2.8Ba 0.14Na 0.012Si 0.99P 0.01O 4.96F 0.012: Eu 0.074, Mn 0.0078The silicate red fluorescence powder, its emmission spectrum is seen Fig. 3.
Embodiment 3
Take by weighing BaCO 313.16g, SrCO 3130.65g, Si 3N 413.87g, KF0.62g, P 2O 52.6g, Eu 2O 35.86g, Dy 2O 30.8g, in the corundum crucible of packing into after mixing, at reducing atmosphere (N 2And H 2Volume ratio is 40:60) under, be heated to 1520 ℃, insulation 6h; Powder agglomates after burning till is pulverized, after sieving, be washed till neutrality with deionized water after, oven dry is used after 3-(2-aminoethyl)-the aminopropyl methyl dimethoxysilane carries out dry surface modification at last, preparing composition is Sr 2.655Ba 0.2K 0.032Si 0.89P 0.11O 5.3F 0.04: Eu 0.1, Dy 0.013The silicate red fluorescence powder, its emmission spectrum is seen Fig. 3.
Embodiment 4
Take by weighing BaCO 316.45g, SrCO 3130.9g, LiF0.11g, Si 3N 413.72g, Eu 2O 33.81g, Dy 2O 30.68g, NH 4F1.57g is in the corundum crucible of packing into after mixing, at reducing atmosphere (N 2And H 2Volume ratio is 0:100) under, be heated to 1580 ℃, insulation 4h; Powder agglomates after burning till is pulverized, after sieving, be washed till neutrality with deionized water after, oven dry is used after 3-(2-aminoethyl)-aminopropyl trimethoxysilane is carried out the wet method surface-treated at last, preparing composition is Ba 2.66Sr 0.25Li 0.013Si 0.88Ge 0.12O 4.86F 0.14: Eu 0.065, Dy 0.011The silicate red fluorescence powder, its emmission spectrum is seen Fig. 3.
Embodiment 5～8
Stoichiometric ratio according to chemical structural formula takes by weighing reaction raw materials, according to preparing with embodiment 4 identical synthesis techniques.The particular chemical formula is as shown in the table.
Figure BDA00001911883700051
Annotate: the protective atmosphere in embodiment 5 ~ 8 building-up processes: N 2And H 2Volume ratio is 25:75.
The full spectrogram of the positive white light LEDs that the silicate red fluorescence powder that utilizes embodiment 5 to make is prepared is seen Fig. 7.
Comparative Examples 1
Take by weighing BaCO 3184.18g, SrCO 36.89g, SiO 219.8g, NaF0.168g, Eu 2O 34.34g, in the corundum crucible of packing into after mixing, at reducing atmosphere (N 2And H 2Volume ratio is 75:25) under, be heated to 1520 ℃, insulation 4.5h; Powder agglomates after burning till is pulverized, after sieving, be washed till neutrality with deionized water after, it is Ba that oven dry promptly obtains composition 2.8Sr 0.14Si 0.99O 4.99F 0.012: Eu 0.074Red fluorescence powder, its emmission spectrum is seen Fig. 3.
As can beappreciated from fig. 3, compare with Comparative Examples 1, silicate fluorescent powder provided by the invention has been realized the more emission of long-wave band, has reached about 610nm.
The specific conductivity of the suspension-s of embodiment 5 and Comparative Examples 1 fluorescent material is seen Fig. 5 with the change curve of soak time.As can beappreciated from fig. 5, the hydrolysis degree of fluorescent material provided by the invention in water obviously improves, and shows more stable chemicalstability.
Comparative Examples 2
With commercially available red fluorescence powder Ca 0.3Sr 0.85AlSiN 3: Eu 0.006As a comparison the example 2.
Performance test:
The red fluorescence powder of the red fluorescence powder that embodiment 1-4 is made, the red fluorescence powder that Comparative Examples 1 makes and Comparative Examples 2 respectively with yellow-green fluorescence powder (composition Lu 2.63Y 0.35Al 5O 12: Ce 0.03, the emission main peak is 535nm) mix, mix phosphor gel, cooperate with the blue chip of 455 ~ 460nm respectively again and process white light LEDs, colour temperature, optical throughput, the colour rendering index of white light LEDs are tested, the result sees the following form:
The optical parametric of the positive white light LEDs that table 1 embodiment and Comparative Examples red fluorescence powder are processed
Figure BDA00001911883700061
The optical parametric of the warm white LED that table 2 embodiment and Comparative Examples red fluorescence powder are processed
Figure BDA00001911883700062
Test result by table 1 and table 2 can find out that silicate red fluorescence powder of the present invention has good colour rendering index and luminous efficiency, helps producing the white light LEDs of high light efficiency and high colour developing.

Claims (6)

1. a silicate red fluorescence powder is characterized in that, chemical structural formula is: Ba (3-a-b-d-k)Sr aA ' bSi (1-c)A " cO (5-q)F q: Eu d, M k, wherein, A ' is at least a among Li, Na, the K; A " is a kind of among Ge, the P; M is at least a among Ce, Mn, the Dy; 0.01<a≤2.8; 0.001≤b≤0.05; 0.0001≤c≤0.2; 0.003≤q≤0.2; 0.03≤d≤0.5; 0<k≤0.01.
2. the preparation method of the described silicate red fluorescence powder of claim 1 is characterized in that, comprises the steps:
(1) oxide compound, fluorochemical, muriate, carbonate or the nitrate salt with Ba, Sr, Li, Na, K, P, Ge, Eu, Ce, Mn, Dy is raw material, and Si 3N 4With the ammonium salt that contains the F element be raw material, take by weighing required raw material according to the stoichiometric ratio in the chemical structural formula of the top fluorescent material that provides, and mix;
(2) place reducing atmosphere to carry out high-temperature roasting mixed raw materials;
(3) with the powder agglomates that obtains after the high-temperature roasting after pulverizing, sieve, wash, drying, obtain the fluorescent material midbody;
(4) after the fluorescent material midbody that step (3) is obtained carries out surface-treated with silane coupling agent, promptly get.
3. the preparation method of silicate red fluorescence powder as claimed in claim 2 is characterized in that, in the step (2), reducing atmosphere is by N 2And H 2Mixed gas is formed, N 2And H 2Volume ratio 0:100 ~ 70:30.
4. the preparation method of silicate red fluorescence powder as claimed in claim 3 is characterized in that, N 2And H 2Volume ratio be 0:100 ~ 25:75.
5. the preparation method of silicate red fluorescence powder as claimed in claim 2 is characterized in that, in the step (2), the temperature of high-temperature roasting is 1300-1600 ℃, and the time is 2-16h.
6. like the preparation method of each described silicate red fluorescence powder of claim 2 to 5; It is characterized in that; In the step (4), described silane coupling agent is selected from a kind of in vinyl three ('beta '-methoxy oxyethyl group) silane, 3-(2-aminoethyl)-aminopropyl methyl dimethoxysilane or 3-(2-the aminoethyl)-aminopropyl trimethoxysilane.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102899020A (en) * 2012-10-25 2013-01-30 江苏博睿光电有限公司 Silicate fluorescent powder for coating LED and coating method thereof
CN103058596A (en) * 2013-01-10 2013-04-24 浙江杭萧钢构股份有限公司 Autoclaved aerated concrete
CN103589426A (en) * 2013-11-08 2014-02-19 天津理工大学 Preparation method of full-inorganic phosphor for near ultraviolet laser light conversion
CN104279514A (en) * 2013-07-03 2015-01-14 深圳市绎立锐光科技开发有限公司 Wavelength conversion device, manufacturing method thereof, relevant light emitting device and relevant projection system
CN110108682A (en) * 2019-05-08 2019-08-09 济南大学 The application of several atypia feux rouges silicide dyes

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040090174A1 (en) * 2000-12-28 2004-05-13 Stefan Tasch Light source comprising a light-emitting element
US20060028122A1 (en) * 2004-08-04 2006-02-09 Intematix Corporation Novel silicate-based yellow-green phosphors
KR20070082952A (en) * 2006-02-20 2007-08-23 특허법인 맥 Mixed luminescent material and white light emitting diode using the material
CN101531901A (en) * 2009-04-16 2009-09-16 复旦大学 Ultraviolet purple light excited red and blue transmitted phosphosilicate fluorescent powder
CN101838535A (en) * 2010-04-07 2010-09-22 江苏博睿光电有限公司 Rare earth fluorescent powder and preparation method thereof
CN102399553A (en) * 2011-12-14 2012-04-04 沈阳化工大学 Ca2MgSiO5: eu, ce green phosphor and its prepn

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040090174A1 (en) * 2000-12-28 2004-05-13 Stefan Tasch Light source comprising a light-emitting element
US20060028122A1 (en) * 2004-08-04 2006-02-09 Intematix Corporation Novel silicate-based yellow-green phosphors
KR20070082952A (en) * 2006-02-20 2007-08-23 특허법인 맥 Mixed luminescent material and white light emitting diode using the material
CN101531901A (en) * 2009-04-16 2009-09-16 复旦大学 Ultraviolet purple light excited red and blue transmitted phosphosilicate fluorescent powder
CN101838535A (en) * 2010-04-07 2010-09-22 江苏博睿光电有限公司 Rare earth fluorescent powder and preparation method thereof
CN102399553A (en) * 2011-12-14 2012-04-04 沈阳化工大学 Ca2MgSiO5: eu, ce green phosphor and its prepn

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
《Journal of Solid State Chemistry》 20091223 Ruili Zhang，et al Luminescence enhancement of Eu2+, Ce3+ co-doped Ba3Si5O13-deltaNdelta phosphors 第620-623页 1-6 第183卷, *
HO SEONG JANG, ET AL: "Emission Band Change of (Sr1−xMx)3SiO5:Eu2+(M = Ca, Ba) Phosphor for White Light Sources Using Blue/Near-Ultraviolet LEDs", 《JOURNAL OF THE ELECTROCHEMICAL SOCIETY》 *
HO SEONG JANG, ET AL: "Emission Band Change of (Sr1−xMx)3SiO5:Eu2+(M = Ca, Ba) Phosphor for White Light Sources Using Blue/Near-Ultraviolet LEDs", 《JOURNAL OF THE ELECTROCHEMICAL SOCIETY》, vol. 156, 6 April 2009 (2009-04-06), pages 138 - 142 *
RUILI ZHANG，ET AL: "Luminescence enhancement of Eu2+, Ce3+ co-doped Ba3Si5O13-δNδ phosphors", 《JOURNAL OF SOLID STATE CHEMISTRY》 *
张晓园，等: "Sr3SiO5:Eu2+和Sr3SiO5:Eu2+,Dy3+荧光粉的黄色长余辉性质", 《发光学报》 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102899020A (en) * 2012-10-25 2013-01-30 江苏博睿光电有限公司 Silicate fluorescent powder for coating LED and coating method thereof
CN102899020B (en) * 2012-10-25 2014-07-23 江苏博睿光电有限公司 Silicate fluorescent powder for coating LED and coating method thereof
CN103058596A (en) * 2013-01-10 2013-04-24 浙江杭萧钢构股份有限公司 Autoclaved aerated concrete
CN104279514A (en) * 2013-07-03 2015-01-14 深圳市绎立锐光科技开发有限公司 Wavelength conversion device, manufacturing method thereof, relevant light emitting device and relevant projection system
CN104279514B (en) * 2013-07-03 2015-12-02 深圳市绎立锐光科技开发有限公司 Wavelength converter and preparation method thereof, related lighting fixtures and optical projection system
CN103589426A (en) * 2013-11-08 2014-02-19 天津理工大学 Preparation method of full-inorganic phosphor for near ultraviolet laser light conversion
CN110108682A (en) * 2019-05-08 2019-08-09 济南大学 The application of several atypia feux rouges silicide dyes
CN110108682B (en) * 2019-05-08 2021-09-24 济南大学 Application of several atypical red silicon-containing dyes

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