CN104087299A - Blue light-excited aluminate-based red fluorescent material and preparation method and application thereof - Google Patents

Blue light-excited aluminate-based red fluorescent material and preparation method and application thereof Download PDF

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Publication number
CN104087299A
CN104087299A CN201410277751.8A CN201410277751A CN104087299A CN 104087299 A CN104087299 A CN 104087299A CN 201410277751 A CN201410277751 A CN 201410277751A CN 104087299 A CN104087299 A CN 104087299A
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fluorescent material
blue
red fluorescent
based red
light excited
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CN104087299B (en
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傅仁利
蒋维娜
顾席光
张鹏飞
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Nanjing University of Aeronautics and Astronautics
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Nanjing University of Aeronautics and Astronautics
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Abstract

The invention discloses a blue light-excited aluminate-based red fluorescent material and a preparation method and an application thereof. The fluorescent material is represented by the formula of M<1-x><1>M<2><2>AlO<5>:xEu, wherein according to the atomic mole number, x is greater than or equal to 0.005 and less than or equal to 1.0, M<1> is at least one of trivalent La or Gd, M<2> is at least one of Sr or Ca, and Eu is divalent. The fluorescent material can be effectively excited by light with the wavelength range of 400-500 nm, and then emits red light with the wavelength of 525-750 nm. The preparation method of the fluorescent material comprises the steps: respectively weighing corresponding raw materials in proportion according to the molecular formula, mixing, then roasting in a N2 and H2 mixed atmosphere, and thus obtaining the blue light-excited aluminate-based red fluorescent material. The fluorescent material can be applied in a blue light-excited white light LED; and the fluorescent material has the characteristics of good chemical stability, wide emission covering range, simple preparation method, low cost and no harmful components, and easily achieves industrial production.

Description

A kind of blue-light excited aluminate-based red fluorescent material and preparation method thereof and application
Technical field
The invention belongs to luminescent material technical field, especially relate to a kind of blue-light excited aluminate-based red fluorescent material and preparation method thereof and application.
Background technology
White light LEDs has that volume is little, thermal value is low, current consumption is little, the life-span is long, speed of response is fast, environment friendly and pollution-free, can planar package etc. advantage, be called as after incandescent light, luminescent lamp the 4th generation light source.
The implementation of white light LEDs mainly contains three kinds of approach: (1) multi-colored led combined method, will send out red, green, blue three-color LED combination results white light, and this method can arbitrarily be adjusted color, but power supply is complicated, and cost is higher; (2) utilize ultraviolet LED chip to excite red, green, blue emitting phosphor synthesize white light, this method color developing is best, but efficiency is lower at present; (3) blue-light LED chip and the YAG:Ce that can effectively be excited by blue light 3+yellow fluorescent powder combination realizes white light, and this method relative cost is lower, and efficiency is higher.Adopt at present blue light for InGaN chip to apply YAG:Ce 3+the formed white light LEDs of yellow fluorescent powder, mature preparation process, product is stable, has entered special lighting field.But the maximum deficiency of this array mode is that colour rendering index is on the low side, the occasion that is difficult to meet interior lighting He requires high color rendering index (CRI), major cause is YAG:Ce 3+a little less than in spectrum, red spectral band is launched.Therefore, need to, on the basis of " blue-light LED chip+yellow fluorescent powder ", add the red fluorescence powder that can be excited by blue chip to supplement the red composition in spectrum.
Studying at present and be applied can be actually rare by the kind of blue-light excited red fluorescence powder, mainly contain alkaline earth sulfide system and nitride system, but sulfide rouge and powder unstable chemcial property, easy deliquescence, and the synthetic severe condition such as high temperature, high pressure that conventionally need of Nitride phosphor, very high to the requirement of production unit, be unfavorable for suitability for industrialized production.
Therefore, this will ask for help existing red fluorescence powder performance is being carried out to the improved while, also to constantly find new matrix, develop the red fluorescent powder for white radiation LED of new component.2009, the people such as Im in patent documentation 1 reported first Ce 3+the LaSr of doping 2alO 5novel aluminum hydrochlorate yellow fluorescent powder LaSr 2alO 5: Ce 3+under 450nm is blue-light excited, can launch the broadband spectral that peak value is 556nm, this fluorescent material has good chemistry and thermostability, and higher light conversion efficiency and photochromic stability, but insensitive to the variation of temperature and drive current, and LaSr 2alO 5for tetrahedral structure, space group is I4/mcm, has a La in lattice 3+with two different Sr 2+crystal case, is to be a kind ofly applicable to rare earth ion doped stable body material, but this material is applied to white light LEDs field, has not yet to see so far report.
Summary of the invention
For the problem of above-mentioned technical Analysis and existence, supplying method is simple, the blue-light excited aluminate-based red fluorescent material of stable performance and preparation method thereof and application thereof, and the present invention is achieved in that
A blue-light excited aluminate-based red fluorescent material, has following molecular formula M 1 1-xm 2 2alO 5: xEu, presses the metering of atomic molar number, 0.005≤x≤1.0 in formula;
M 1for La or at least one in Gd, M 2for at least one in Sr or Ca; M 1for trivalent, M 2for divalence, Eu is divalence.
?preferably, in the present invention, described blue-light excited aluminate-based red fluorescent material has following molecular formula: La 1-xsr 2alO 5: xEu, presses the metering of atomic molar number, 0.005≤x≤1.0 in formula.
Preferably, in the present invention, there is following molecular formula: La 1-x-ygd ysr 2alO 5: xEu, presses the metering of atomic molar number, 0.005≤x≤1.0,0 < y≤0.2 in formula.
Preferably, in the present invention, described blue-light excited aluminate-based red fluorescent material, has following molecular formula: La 0.5-ygd ysr 2alO 5: in 0.5Eu formula, press the metering of atomic molar number, 0 < y≤0.2.
Preferably, in the present invention, described blue-light excited aluminate-based red fluorescent material, has following molecular formula: La 1-xsr 2-zca zalO 5: xEu, presses the metering of atomic molar number, 0.005≤x≤1.0,0 < z≤1.5 in formula.
In the present invention, preferred, described blue-light excited aluminate-based red fluorescent material has following molecular formula: La 0.5sr 2-zca zalO 5: 0.5Eu, 0 < z≤1.5.
In the present invention, the preparation method of described blue-light excited aluminate-based red fluorescent material, concrete steps are as follows: the molecular formula composition according to blue-light excited aluminate-based red fluorescent material takes each element oxide in proportion respectively, after mixing 2-4h, at 60 ℃ of temperature, be dried 6-10h, after being placed in crucible, proceed in high temperature process furnances, vacuumize, at N 2and H 2under mixed atmosphere, in 1400 ℃ of-1500 ℃ of roasting 4h, obtain described blue-light excited aluminate-based red fluorescent material.
In the present invention, the application of described blue-light excited aluminate-based red fluorescent material in blue-light excited white light LEDs.
The red fluorescence powder that the present invention proposes is based on LaSr 2alO 5a kind of compound of square structure, A position is to be jointly to consist of La3+ and Sr2+ by A position, B position is by Al 3+form rare earth doped Eu 2+provide the active ion of red-emitting, by adopting Gd 3+the La that replaces A position 3+with employing Ca 2+the Sr that replaces A position 2+realize the red emission of fluorescent material and carry out luminescent properties optimization and spectrum regulation and control, in the present invention, the valence state that mixes the Eu ion of lattice can be divalence by trivalent partial reduction, realizes ruddiness outgoing, has optimized luminescent properties.
The invention has the beneficial effects as follows:
(1) red fluorescence material the present invention relates to is wide range transmitting, and by codoped Gd 3+, Ca 2+can effectively improve the luminous intensity of fluorescent material, and emission peak can be regulated at 610-620nm.
(2) red fluorescence material the present invention relates to is oxide compound series, and physicochemical property are highly stable.
(3) synthetic method of the red fluorescence material the present invention relates to is simple, does not need special conversion unit, and suitability for industrialized production is convenient.
Accompanying drawing explanation
Fig. 1 is the excitation-emission spectrum of the prepared blue-light excited aluminate-based red fluorescent material of embodiment 1.
Fig. 2 be the prepared blue-light excited aluminate-based red fluorescent material of embodiment 1 under 445 nanometers excite emmission spectrum.
Fig. 3 is the prepared blue-light excited aluminate-based red fluorescent material luminous intensity of embodiment 1 and the schematic diagram of Eu relation with contents.
Fig. 4 is the spectrum that the prepared blue-light excited aluminate-based red fluorescent material of embodiment 1 and yellow fluorescent material record under blue-light LED chip irradiates.
Fig. 5 be the prepared blue-light excited aluminate-based red fluorescent material of embodiment 2 under 445 nanometers excite emmission spectrum.
Fig. 6 be under prepared blue-light excited aluminate-based red fluorescent material 445 nanometers of embodiment 3 excite emmission spectrum.
Embodiment
Embodiment 1: blue-light excited aluminate-based red fluorescent material La 1-xsr 2alO 5: the preparation of xEu
With M 1for La, M 2for Sr is example, preparation preparation M 1 1-xm 2 2alO 5: xEu, raw material is chosen La 2o 3, SrCO 3, Al 2o 3and Eu 2o 3,by molecular formula La 1-xsr 2alO 5: xEu(x=0.005,0.02,0.05,0.1,0.35,0.5,0.75,1.0; )
Take respectively raw material:
3.2418 grams of La during x=0.005 2o 3, 5.9052 grams of SrCO 3, 1.0196 grams of Al 2o 3, 0.0176 gram of Eu 2o 3;
3.1929 grams of La during x=0.02 2o 3, 5.9052 grams of SrCO 3, 1.0196 grams of Al 2o 3, 0.0704 gram of Eu 2o 3;
3.0952 grams of La during x=0.05 2o 3, 5.9052 grams of SrCO 3, 1.0196 grams of Al 2o 3, 0.1760 gram of Eu 2o 3;
2.9323 grams of La during x=0.1 2o 3, 5.9052 grams of SrCO 3, 1.0196 grams of Al 2o 3, 0.3519 gram of Eu 2o 3;
2.1178 grams of La during x=0.35 2o 3, 5.9052 grams of SrCO 3, 1.0196 grams of Al 2o 3, 1.2317 grams of Eu 2o 3;
1.6290 grams of La during x=0.5 2o 3, 5.9052 grams of SrCO 3, 1.0196 grams of Al 2o 3, 1.7596 grams of Eu 2o 3;
0.9145 gram of La during x=0.75 2o 3, 5.9052 grams of SrCO 3, 1.0196 grams of Al 2o 3, 2.6395 grams of Eu 2o 3;
0 gram of La during x=1.0 2o 3, 5.9052 grams of SrCO 3, 1.0196 grams of Al 2o 3, 3.5192 grams of Eu 2o 3;
Respectively by load weighted raw material with planetary ball mill mixing 4h after, at 60 ℃ of temperature, dry 10h, is contained in raw material in crucible after complete drying, proceeds in high temperature process furnances, after vacuumizing, passes into N 2and H 2volume ratio is the mixed atmosphere of 1:1, with 1400 ℃ of roastings 4 hours, obtains described blue-light excited aluminate-based red fluorescent material.
Fig. 1 is the excitation-emission spectrum of the prepared blue-light excited aluminate-based red fluorescent material of embodiment 1, as shown in the figure, at 610nm place, monitor, sample is at 445nm, 460nm and 480nm place have corresponding excitation peak, wherein the excitation spectrum at 445nm place is the strongest, adopts accordingly 445nm to excite the emmission spectrum of resulting 610nm the strongest.
Fig. 2 is the emmission spectrum of the prepared blue-light excited aluminate-based red fluorescent material of embodiment 1 under 445 nanometers excite, and emmission spectrum is the broadband ruddiness of 525nm-750nm, and peak value is at 610nm.
Fig. 3 is the prepared blue-light excited aluminate-based red fluorescent material luminous intensity of embodiment 1 and Eu relation with contents schematic diagram, as seen from the figure, along with the increase of Eu ion content, luminous intensity first increases and then decreases, when x=0.5, luminous intensity reaches maximum value.
Fig. 4 is by the blue-light excited aluminate-based red fluorescent material La of embodiment 1 gained 0.5sr 2alO 5: 0.5Eu and LaSr 2alO 5: Ce 3+yellow fluorescent powder in mass ratio 2:1 evenly mixes and is placed in the integrating sphere of fluorescent material quantum yield tester, using 460nm blue-light LED chip as light source be radiated on powder under the spectrum that records, its chromaticity coordinates is (0.3797,0.3718), correlated(color)temperature is 3959K, spectrum is carried out to Gauss curve fitting can be found out, spectrum is comprised of three parts: the LaSr that blue-light LED chip spectrum+peak value that peak value is 460nm is 525nm 2alO 5: Ce 3+the La that the broadband emission spectrum+peak value of yellow fluorescent powder is 610nm 0.5sr 2alO 5: the broadband emission spectrum of 0.5Eu red fluorescence powder.
  
Embodiment 2: blue-light excited aluminate-based red fluorescent material La 0.5-ygd ysr 2alO 5: 0.5Eu, preparation
With M 1for La and Gd, M 2for Sr, x=0.5 is example, preparation M 1 1-xm 2 2alO 5: xEu,
Raw material is chosen La 2o 3, SrCO 3, Al 2o 3, Eu 2o 3and Gd 2o 3, by molecular formula La 0.5-ygd ysr 2alO 5: 0.5Eu, (y=0,0.05,0.10,0.15,0.20; ) take respectively raw material:
0.8145 gram of La during y=0 2o 3, 2.9526 grams of SrCO 3, 0.5098 gram of Al 2o 3, 0.8798 gram of Eu 2o 3, 0 gram of Gd 2o 3;
0.7331 gram of La during y=0.05 2o 3, 2.9526 grams of SrCO 3, 0.5098 gram of Al 2o 3, 0.8798 gram of Eu 2o 3, 0.0906 gram of Gd 2o 3;
0.6516 gram of La during y=0.10 2o 3, 2.9526 grams of SrCO 3, 0.5098 gram of Al 2o 3, 0.8798 gram of Eu 2o 3, 0.1812 gram of Gd 2o 3;
0.5702 gram of La during y=0.15 2o 3, 2.9526 grams of SrCO 3, 0.5098 gram of Al 2o 3, 0.8798 gram of Eu 2o 3, 0.2719 gram of Gd 2o 3;
0.4887 gram of La during y=0.20 2o 3, 2.9526 grams of SrCO 3, 0.5098 gram of Al 2o 3, 0.8798 gram of Eu 2o 3, 0.3625 gram of Gd 2o 3;
Load weighted raw material is mixed 2 hours, and at 60 ℃ of temperature, dry 6h, is contained in raw material in crucible after complete drying, proceeds in high temperature process furnances, after vacuumizing, passes into N 2and H 2volume ratio is the mixed atmosphere of 1:1, with 1500 ℃ of roastings 4 hours, obtains described blue-light excited aluminate-based red fluorescent material.
Fig. 5 is the emmission spectrum of the prepared fluorescent material of embodiment 2 under 445 nanometers excite, and emmission spectrum is the broadband ruddiness of 525nm-750nm, and peak value is at 610nm, along with Gd 3+the increase of ion doping content, luminous intensity first increases and then decreases, when y=0.10, luminous intensity reaches maximum value.
Embodiment 3: blue-light excited aluminate-based red fluorescent material La 0.5sr 2-zca zalO 5: the preparation of 0.5Eu
With M 1for La, M 2for Sr and Ca, x=0.5 is example, preparation M 1 1-xm 2 2alO 5: xEu,
Raw material is chosen La 2o 3, SrCO 3, Al 2o 3, Eu 2o 3and CaCO 3, by molecular formula La 0.5sr 2-zca zalO 5: 0.5Eu, (z=0,0.1,0.2,0.3,0.4,0.6.1.0,1.5) take respectively raw material:
0.8145 gram of La during z=0 2o 3, 2.9526 grams of SrCO 3, 0.5098 gram of Al 2o 3, 0.8798 gram of Eu 2o 3, 0 gram of CaCO 3;
0.8145 gram of La during z=0.1 2o 3, 2.8049 grams of SrCO 3, 0.5098 gram of Al 2o 3, 0.8798 gram of Eu 2o 3, 0.1001 gram of CaCO 3;
0.8145 gram of La during z=0.2 2o 3, 2.6573 grams of SrCO 3, 0.5098 gram of Al 2o 3, 0.8798 gram of Eu 2o 3, 0.2002 gram of CaCO 3;
0.8145 gram of La during z=0.3 2o 3, 2.5097 grams of SrCO 3, 0.5098 gram of Al 2o 3, 0.8798 gram of Eu 2o 3, 0.3003 gram of CaCO 3;
0.8145 gram of La during z=0.4 2o 3, 2.3621 grams of SrCO 3, 0.5098 gram of Al 2o 3, 0.8798 gram of Eu 2o 3, 0.4004 gram of CaCO 3;
0.8145 gram of La during z=0.6 2o 3, 2.0668 grams of SrCO 3, 0.5098 gram of Al 2o 3, 0.8798 gram of Eu 2o 3, 0.6005 gram of CaCO 3;
0.8145 gram of La during z=1.0 2o 3, 1.4763 grams of SrCO 3, 0.5098 gram of Al 2o 3, 0.8798 gram of Eu 2o 3, 1.0001 grams of CaCO 3;
0.8145 gram of La during z=1.5 2o 3, 0.7381 gram of SrCO 3, 0.5098 gram of Al 2o 3, 0.8798 gram of Eu 2o 3, 1.5014 grams of CaCO 3;
Load weighted raw material is mixed 2 hours, and at 60 ℃ of temperature, dry 6h, is contained in raw material in crucible after complete drying, proceeds in high temperature process furnances, after vacuumizing, passes into N 2and H 2volume ratio is the mixed atmosphere of 1:1, with 1400 ℃ of roastings 4 hours, obtains described blue-light excited aluminate-based red fluorescent material.
Fig. 6 is the emmission spectrum of the prepared fluorescent material of embodiment 3 under 445 nanometers excite, and emmission spectrum is the broadband ruddiness of 525nm-750nm, and peak value is adjustable within the scope of 610nm-620nm, along with Ca 2+the increase of ion doping content, luminous intensity first increases and then decreases, when z=0.6, luminous intensity reaches maximum value.
The above embodiment has only expressed embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some improvement, these improve and all belong to protection scope of the present invention.
  

Claims (9)

1. a blue-light excited aluminate-based red fluorescent material, has following molecular formula M 1 1-xm 2 2alO 5: xEu, presses the metering of atomic molar number, 0.005≤x≤1.0 in formula; In formula, M 1for La or at least one in Gd, M 2for at least one in Sr or Ca; M 1for trivalent, M 2for divalence, Eu is divalence.
2. blue-light excited aluminate-based red fluorescent material according to claim 1, has following molecular formula: La 1-xsr 2alO 5: xEu, presses the metering of atomic molar number, 0.005≤x≤1.0 in formula.
3. blue-light excited aluminate-based red fluorescent material according to claim 1, has following molecular formula: La 1-x-ygd ysr 2alO 5: xEu, presses the metering of atomic molar number, 0.005≤x≤1.0,0 < y≤0.2 in formula.
4. blue-light excited aluminate-based red fluorescent material according to claim 3, has following molecular formula: La 0.5-ygd ysr 2alO 5: in 0.5Eu formula, press the metering of atomic molar number, 0 < y≤0.2.
5. blue-light excited aluminate-based red fluorescent material according to claim 1, has following molecular formula: La 1-xsr 2-zca zalO 5: xEu, presses the metering of atomic molar number, 0.005≤x≤1.0,0 < z≤1.5 in formula.
6. blue-light excited aluminate-based red fluorescent material according to claim 5, has following molecular formula: La 0.5sr 2-zca zalO 5: 0.5Eu, 0 < z≤1.5.
7. the preparation method of a blue-light excited aluminate-based red fluorescent material as described in one of claim 1-6, it is characterized in that, concrete steps are as follows: the molecular formula composition according to blue-light excited aluminate-based red fluorescent material takes each element oxide in proportion respectively, after mixing 2-4h, at 60 ℃ of temperature, be dried 6-10h, after being placed in crucible, proceed in high temperature process furnances, vacuumize, at N 2and H 2under mixed atmosphere, in 1400 ℃ of-1500 ℃ of roasting 4h, obtain described blue-light excited aluminate-based red fluorescent material.
8. method according to claim 7, is characterized in that described N 2and H 2n in mixed atmosphere 2and H 2volume ratio be 1:1.
9. the blue-light excited aluminate-based red fluorescent material application in blue-light excited white light LEDs as described in one of claim 1-6.
CN201410277751.8A 2014-06-19 2014-06-19 A kind of blue light activated aluminate-based red fluorescent material and preparation method and application Expired - Fee Related CN104087299B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104592995A (en) * 2015-01-19 2015-05-06 中国科学院长春应用化学研究所 Yellow fluorescent powder for blue-light-excited white LED and preparation method of yellow fluorescent powder
CN107828412A (en) * 2017-11-02 2018-03-23 杭州显庆科技有限公司 A kind of blue long afterflow fluorescent material and preparation method thereof
CN114874778A (en) * 2022-04-08 2022-08-09 渤海大学 Ultra-wideband excitation and broadband emission red fluorescent powder and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090212314A1 (en) * 2008-02-27 2009-08-27 The Regents Of The University Of California YELLOW EMITTING PHOSPHORS BASED ON Ce3+-DOPED ALUMINATE AND VIA SOLID SOLUTION FOR SOLID-STATE LIGHTING APPLICATIONS
CN102191062A (en) * 2010-03-12 2011-09-21 长春师范学院 Red fluorescent powder for white light-emitting diode (LED) and preparation method thereof
CN102888221A (en) * 2012-10-29 2013-01-23 江苏博睿光电有限公司 Fluorescent powder for LED and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090212314A1 (en) * 2008-02-27 2009-08-27 The Regents Of The University Of California YELLOW EMITTING PHOSPHORS BASED ON Ce3+-DOPED ALUMINATE AND VIA SOLID SOLUTION FOR SOLID-STATE LIGHTING APPLICATIONS
CN102191062A (en) * 2010-03-12 2011-09-21 长春师范学院 Red fluorescent powder for white light-emitting diode (LED) and preparation method thereof
CN102888221A (en) * 2012-10-29 2013-01-23 江苏博睿光电有限公司 Fluorescent powder for LED and preparation method thereof

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
C.E.RODRÍGUEZ-GARCÍA等: "Photoluminescence Properties of Eu-Doped LaSr2AlO5", 《SCIENCE OF ADVANCED MATERIALS》 *
KYU-SEOG HWANG等: "Red-emitting alkaline-earth rare-earth pentaoxometallates powders prepared by metal carboxylates solution", 《BULL.MATER.SCI.》 *
WON BIN IM等: "LaSr2AlO5, a Versatile Host Compound for Ce3+-Based Yellow Phosphors: Structural Tuning of Optical Properties and Use in Solid-State White Lighting", 《CHEM.MATER.》 *
孙晓园等: "白光LED用红色荧光粉Sr2EuxGd1-xAlO5制备及其发光性质", 《发光学报》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104592995A (en) * 2015-01-19 2015-05-06 中国科学院长春应用化学研究所 Yellow fluorescent powder for blue-light-excited white LED and preparation method of yellow fluorescent powder
CN107828412A (en) * 2017-11-02 2018-03-23 杭州显庆科技有限公司 A kind of blue long afterflow fluorescent material and preparation method thereof
CN107828412B (en) * 2017-11-02 2018-12-04 宁波朗格照明电器有限公司 A kind of blue long afterflow fluorescent powder and preparation method thereof
CN114874778A (en) * 2022-04-08 2022-08-09 渤海大学 Ultra-wideband excitation and broadband emission red fluorescent powder and preparation method thereof

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