CN104194781A - Long persistence luminescent material with single substrate and adjustable persistence colors and preparation method of long persistence luminescent material - Google Patents

Long persistence luminescent material with single substrate and adjustable persistence colors and preparation method of long persistence luminescent material Download PDF

Info

Publication number
CN104194781A
CN104194781A CN201410355335.5A CN201410355335A CN104194781A CN 104194781 A CN104194781 A CN 104194781A CN 201410355335 A CN201410355335 A CN 201410355335A CN 104194781 A CN104194781 A CN 104194781A
Authority
CN
China
Prior art keywords
long
luminescent material
glow luminous
persistence
luminous material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201410355335.5A
Other languages
Chinese (zh)
Other versions
CN104194781B (en
Inventor
王育华
陈文波
曾巍
韩少春
李�根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lanzhou University
Original Assignee
Lanzhou University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lanzhou University filed Critical Lanzhou University
Priority to CN201410355335.5A priority Critical patent/CN104194781B/en
Publication of CN104194781A publication Critical patent/CN104194781A/en
Application granted granted Critical
Publication of CN104194781B publication Critical patent/CN104194781B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Luminescent Compositions (AREA)

Abstract

The invention discloses a luminescent material which is excited by ultraviolet light or visible light and can emit persistent visible light in adjustable colors from blue to white and has a long persistence, and a preparation method of the luminescent material. The long persistence luminescent material with a single substrate and adjustable persistence colors has a molecular formula of (Ca1-x-1/7y-1/7zSrx)7(SiO3)6Cl2:Euy, Lnz, wherein Ln is one or a combination of any several materials of La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y or Mn; and in molecules, x is greater than or equal to 0.15 and less than or equal to 0.55, y is greater than or equal to 0.01 and less than or equal to 0.09, and z is greater than or equal to 0.01 and less than or equal to 0.09. The preparation method of the luminescent material is simple and is low in cost; and the luminescent material has the advantages of good luminescent color purity, high persistence luminance and long persistence time.

Description

Adjustable long after glow luminous material and the preparation method of a kind of single-matrix twilight sunset color
Technical field
The present invention relates to a kind of luminescent material and preparation method, the present invention relates to exactly a kind ofly after UV-light or excited by visible light, can send lasting visible ray, its luminous color adjustable and there is luminescent material and the preparation method of steady persistence from blueness to white.
Background technology
Long after glow luminous material is a class embedded photoluminescent material, under sunlight, luminescent lamp, incandescent light etc. irradiate, absorbs the energy in light, and by the energy storage absorbing in material, then with luminous form, the energy of storage is slowly discharged.Long after glow luminous material has been widely used in emergent indicating equipment, low light level illumination, artwork and finishing material.Since green, blue long afterflow material reach after commercial requirement, people attempt to develop red long afterglow material always, to mixing by three primary colours, can test the long-afterglow material of any color, thereby meet various application.But red long afterglow material performance can not reach requirement always.Simultaneously, even if develop the red twilight sunset material of excellent performance, adopting three primary colours blending means to obtain other color long after glow luminous material need to overcome: 1) the twilight sunset emissive porwer of three primary colours and rate of decay are all basically identical, and this is difficult to control in actually operating.2) three primary colours long after glow luminous material can not be excited by same excitation wavelength.This makes slow progress polychrome steady persistence, can meet mainly concentrating on of application green blue.
The method that white long afterglow material can mix by above-mentioned three primary colours obtains, and published have United States Patent (USP) 4694217 and 3891886 and Chinese patent CN1385491A and CN1061034A.The white twilight sunset material Dy3+ ion that can also adulterate in different substrates, although having overcome blending means, this method can not be excited and the different colours inconsistent difficult problem that decays by Same Wavelength, but the twilight sunset of these long-afterglow materials is not long, the longest white twilight sunset is CdSiO3:Dy3+, time of persistence 5h(03113679.6).
Summary of the invention
The invention provides a kind of above-mentioned problems of the prior art that overcome, the long-afterglow material that its glow color can be adjusted to white in blueness, with the preparation method of this material.
The adjustable long after glow luminous material of a kind of single-matrix twilight sunset color of the present invention, its molecular formula is (Ca 1-x-1/7y-1/7zsr x) 7(SiO 3) 6cl 2: Eu y, Ln z; A kind of in Ln=La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y or Mn or appoint several arbitrary combination wherein; In molecule, 0.15≤x≤0.55,0.01≤y≤0.09; 0.01≤z≤0.09.
As the long after glow luminous material of a kind of concrete sent blue light of the present invention, its molecular formula is (Ca 0.75sr 0.23) 7(SiO 3) 6cl 2: Eu 0.01, Dy 0.01.
As the long after glow luminous material of concrete the sent blue light of another kind of the present invention, its molecular formula is (Ca 0.75sr 0.23) 7(SiO 3) 6cl 2: Eu 0.01, Nd 0.01.
As the long after glow luminous material of concrete the sent blue light of another kind of the present invention, its molecular formula is (Ca 0.75sr 0.23) 7(SiO 3) 6cl 2: Eu 0.01, Tm 0.01.
As the long after glow luminous material of concrete the sent blue light of another kind of the present invention, its molecular formula is (Ca 0.75sr 0.22) 7(SiO 3) 6cl 2: Eu 0.01, Nd 0.01, Ho 0.01.
As the long after glow luminous material of concrete the sent blue light of another kind of the present invention, molecular formula is (Ca 0.75sr 0.22) 7(SiO 3) 6cl 2: Eu 0.01, Pr 0.01, Mn 0.01.
As the long after glow luminous material of concrete the sent white light of another kind of the present invention, it is characterized in that its molecular formula is for (Ca 0.0.63sr 0.17) 7(SiO 3) 6cl 2: Eu 0.08, Dy 0.08.
As concrete the sent white light of another kind of the present invention long after glow luminous material, its molecular formula is (Ca 0.0.63sr 0.17) 7(SiO 3) 6cl 2: Eu 0.08, Tm 0.08.
As concrete the sent white light of another kind of the present invention long after glow luminous material, its molecular formula is (Ca 0.0.63sr 0.17) 7(SiO 3) 6cl 2: Eu 0.08, Tb 0.02, Lu 0.02, Y 0.02.
The preparation method of above-mentioned arbitrary long after glow luminous material is: by the metering ratio of each chemical composition in definite long after glow luminous material expression formula, take each raw material and carry out mixed grinding, again the uniform raw material powder of ground and mixed is placed in to temperature and is the environment of 800 ℃～1100 ℃, under reducing atmosphere, roasting is 8 hours～12 hours, be cooled to room temperature, obtain calcined material, calcinate is ground, make required long after glow luminous material.
Long after glow luminous material preparation method of the present invention is simple, cost is low, according to experiment, show, the high color purity of material of the present invention, photoluminescence and after-glow brightness are high, persistence is long, time of persistence is all over 18h, and the blue long afterflow material the longest 27h that reaches time of persistence of the present invention.
Accompanying drawing explanation
Fig. 1 solid line is the twilight sunset spectrum of the long-afterglow material that makes of embodiment 1, and dotted line is the twilight sunset spectrum of the long-afterglow material that makes of embodiment 6.
Fig. 2 is the decay of afterglow graphic representation of the long-afterglow material that makes of embodiment 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The molecular formula of long-afterglow material of the present invention is (Ca 1-x-1/7y-1/7zsr x) 7(SiO 3) 6cl 2: Eu y, Ln z; Wherein, 0.15≤x≤0.55,0.01≤y≤0.09; 0.01≤z≤0.09
The present invention also provides the preparation method of above-mentioned long after glow luminous material, specifically carries out according to the following steps:
Step 1: according to (Ca 1-x-1/7y-1/7zsr x) 7(SiO 3) 6cl 2: Eu y, Ln zthe metering of each chemical composition ratio in expression formula, takes respectively following raw material:
CaCO 3or CaO;
SrCl 2or SrCl 2* 6H 2o
SiO 2or H 2siO 3;
Eu 2O 3；
La 2o 3, CeO 2, Pr 6o 11, Nd 2o 3, Sm 2o 3, Gd 2o 3, Tb 2o 3, Dy 2o 3, Ho 2o 3, Er 2o 3, Tm 2o 3, Yb 2o 3, Lu 2o 3, Y 2o 3or MnCO 3in one or more;
Each got raw material is carried out to mixed grinding, make raw material mixed powder, when grinding, can suitably add a small amount of alcohol to make the more even of reaction raw materials mixing;
Step 2: it is the environment of 800 ℃～1100 ℃ that the raw material powder that step 1 is made is placed in temperature, and roasting is 8 hours～12 hours under reducing atmosphere, is cooled to room temperature, obtains calcined material;
Reducing atmosphere can adopt three kinds of gases: the first is ammonia (NH 3); The second be by volume per-cent by 5～25% hydrogen (H 2) and 95～75% nitrogen (N 2) mixed gas that forms; The third be by volume per-cent by 5～25% carbon monoxide (CO) and 95～75% nitrogen (N 2) mixed gas that forms;
Step 3: the calcined material obtaining in step 2 is ground, make long after glow luminous material.
Long after glow luminous material of the present invention is with Eu 2+as active ions, trivalent rare earth ions Ln, as co-activation ion, adopts low temperature calcination to make.After the optical excitation 10min of 250～450nm wavelength, along with the increase of Eu2+ doping content, twilight sunset color is adjustable from blueness to white, can continue time of persistence to send more than 18 hours.The longlyest can reach 27h.Material of the present invention has advantages of that preparation method is simple, pollution-free, save energy, cost are low.
embodiment 1
By (Ca 0.75sr 0.23) 7(SiO 3) 6cl 2: Eu 0.01, Dy 0.01stoichiometric ratio shown in molecular formula, takes 0.5266g CaCO 3, 0.7000g SrCl 26H 2o, 0.4700gH 2siO 3, 0.025g Eu 2o 3with 0.026g Dy 2o 3as raw material, each raw material ground and mixed taking is put into alumina crucible after evenly, at reducing atmosphere 5%H 2and 95%N 2the temperature lower calcination of lower 1100 ℃ 12 hours.Naturally cool to room temperature, after grinding, make long after glow luminous material.Twilight sunset spectrum after the ultraviolet excitation that this long after glow luminous material is 365nm through wavelength, as shown in Figure 1, in figure, solid line shows that the twilight sunset transmitting main peak of this long after glow luminous material is positioned at 466nm and belongs to Eu 2+4f 65d 1→ 4f 7transition, the chromaticity coordinates that adopts XYZ chromaticity diagram to calculate this long after glow luminous material twilight sunset is x=0.203, y=0.227, is positioned at blue light light emitting area.Can illustrate that the long after glow luminous material making is blue long afterflow luminescent material.As shown in Figure 2, in figure, the brightness of show sample over time for the decay of afterglow curve of this long-afterglow material.The minimum brightness that human eye can be observed under absolute dark condition is 0.32mcd/m 2, and the twilight sunset of this long-afterglow material can remain on this brightness above over 24 hours.
embodiment 2
By (Ca 0.75sr 0.23) 7(SiO 3) 6cl 2: Eu 0.01, Nd 0.01stoichiometric ratio shown in molecular formula, takes 0.5266g CaCO 3, 0.7000g SrCl 26H 2o, 0.4700gH2SiO3,0.025g Eu 2o 3with 0.026g Nd 2o 3as raw material, each raw material ground and mixed taking is put into alumina crucible after evenly, at 5%H 2and 95%N 2the temperature lower calcination that atmosphere is lower 1100 ℃ 10 hours.Naturally cool to room temperature, after grinding, make blue long afterflow luminescent material.Through actual measurement, and the chromaticity coordinates that adopts XYZ chromaticity diagram to calculate this long after glow luminous material twilight sunset is x=0.203, and y=0.227, is positioned at blue light light emitting area, time of persistence 18h.
embodiment 3
By (Ca 0.75sr 0.23) 7(SiO 3) 6cl 2: Eu 0.01, Tm 0.01stoichiometric ratio shown in molecular formula, takes 0.5266g CaCO 3, 0.7000g SrCl 26H 2o, 0.4700gH2SiO3,0.025g Eu 2o 3with 0.026g Tm 2o 3as raw material, each raw material ground and mixed taking is put into alumina crucible after evenly, at 5%H 2and 95%N 2the temperature lower calcination that atmosphere is lower 1100 ℃ 12 hours.Naturally cool to room temperature, after grinding, make blue long afterflow luminescent material.Through actual measurement, and the chromaticity coordinates that adopts XYZ chromaticity diagram to calculate this long after glow luminous material twilight sunset is x=0.205, and y=0.227, is positioned at blue light light emitting area, time of persistence 24h.
embodiment 4
By (Ca 0.75sr 0.22) 7(SiO 3) 6cl 2: Eu 0.01, Nd 0.01, Ho 0.01stoichiometric ratio shown in molecular formula, takes 0.5266g CaCO 3, 0.7000g SrCl 26H 2o, 0.4700gH2SiO3,0.025g Eu 2o 3, 0.026g Nd 2o 3with 0.023g Ho 2o 3as raw material, each raw material ground and mixed taking is put into alumina crucible after evenly, at 5%H 2and 95%N 22the temperature lower calcination that atmosphere is lower 1100 ℃ 12 hours.Naturally cool to room temperature, after grinding, make blue long afterflow luminescent material.The chromaticity coordinates that adopts XYZ chromaticity diagram to calculate this long after glow luminous material twilight sunset is x=0.204, and y=0.226, is positioned at blue light light emitting area, time of persistence 20h.
embodiment 5
By (Ca 0.75sr 0.22) 7(SiO 3) 6cl 2: Eu 0.01, Pr 0.01, Mn 0.01stoichiometric ratio shown in molecular formula, takes 0.5266g CaCO 3, 0.7000g SrCl 26H 2o, 0.4700gH2SiO3,0.025g Eu 2o 3, 0.026g Nd 2o 3with 0.013g MnCO 3as raw material, each raw material ground and mixed taking is put into alumina crucible after evenly, at 5%H 2and 95%N 2the temperature lower calcination that atmosphere is lower 1100 ℃ 12 hours.Naturally cool to room temperature, after grinding, make blue long afterflow luminescent material.Through actual measurement, and the chromaticity coordinates that adopts XYZ chromaticity diagram to calculate this long after glow luminous material twilight sunset is x=0.203, and y=0.227, is positioned at blue light light emitting area, time of persistence 18h.
embodiment 6
By (Ca 0.0.63sr 0.17) 7(SiO 3) 6cl 2: Eu 0.08, Dy 0.08, the stoichiometric ratio shown in molecular formula, takes 0.4550g CaCO 3, 0.5447g SrCl 26H 2o, 0.4700gH2SiO3,0.0149g Eu 2o 3with 0.0154g Dy 2o 3as raw material, each raw material ground and mixed taking is put into alumina crucible after evenly, at 5%H 2and 95%N 2the temperature lower calcination that atmosphere is lower 1100 ℃ 12 hours.Naturally cool to room temperature, after grinding, make long after glow luminous material.The after-glow light spectrogram of surveying after the ultraviolet excitation that this long after glow luminous material is 365nm through wavelength, as shown in Figure 2, in figure, dotted line shows that the twilight sunset transmitting main peak of this long after glow luminous material is positioned at 466nm and 586nm, belongs to Eu 2+4f under different cases 65d 1→ 4f 7transition, the chromaticity coordinates that adopts XYZ chromaticity diagram to calculate this long after glow luminous material twilight sunset is x=0.324, y=0.345, is positioned at white light emission region.Can illustrate that the long after glow luminous material making is white long afterglow material.Through actual measurement, and the chromaticity coordinates that adopts XYZ chromaticity diagram to calculate this long after glow luminous material twilight sunset is x=0.324, and y=0.345, is positioned at white light emission region, time of persistence 18h.
embodiment 7
By (Ca 0.0.63sr 0.17) 7(SiO 3) 6cl 2: Eu 0.08, Tm 0.08, the stoichiometric ratio shown in molecular formula, takes 0.4550g CaCO 3, 0.5447g SrCl 26H 2o, 0.4700gH2SiO3,0.0149g Eu 2o 3with 0.0154g Tm 2o 3as raw material, each raw material ground and mixed taking is put into alumina crucible after evenly, at N 2the temperature lower calcination that atmosphere is lower 1100 ℃ 12 hours.Naturally cool to room temperature, after grinding, make long after glow luminous material.The after-glow light spectrogram of surveying after the ultraviolet excitation that this long after glow luminous material is 365nm through wavelength, as shown in Figure 2, in figure, solid line shows that the twilight sunset transmitting main peak of this long after glow luminous material is positioned at 466nm and 586nm, belongs to Eu 2+4f under different cases 65d 1→ 4f 7transition, the chromaticity coordinates that adopts XYZ chromaticity diagram to calculate this long after glow luminous material twilight sunset is x=0.324, y=0.345, is positioned at white light emission region.Can illustrate that the long after glow luminous material making is white long afterglow material.Through actual measurement, and the chromaticity coordinates that adopts XYZ chromaticity diagram to calculate this long after glow luminous material twilight sunset is x=0.324, and y=0.340, is positioned at white light emission region, time of persistence 18h.
embodiment 8
By (Ca 0.0.63sr 0.17) 7(SiO 3) 6cl 2: Eu 0.08, Tb 0.02, Lu 0.02, Y 0.02stoichiometric ratio shown in molecular formula, takes 0.4550g CaCO 3, 0.5447g SrCl 26H 2o, 0.4700gH 2siO 3, 0.0149g Eu 2o 3, 0.052g Tb 4o 7, 0.048g Lu 2o 3with 0.052g Yb 2o 3as raw material, each raw material ground and mixed taking is put into alumina crucible after evenly, at N 2the temperature lower calcination that atmosphere is lower 1100 ℃ 12 hours.Naturally cool to room temperature, after grinding, make white long afterglow luminescent material.Through actual measurement, and the chromaticity coordinates that adopts XYZ chromaticity diagram to calculate this long after glow luminous material twilight sunset is x=0.324, and y=0.342, is positioned at white light emission region, time of persistence 18h.

Claims (2)

1. the adjustable long after glow luminous material of single-matrix twilight sunset color, is characterized in that its molecular formula is for (Ca 1-x-1/7y-1/7zsr x) 7(SiO 3) 6cl 2: Eu y, Ln z; A kind of in Ln=La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y or Mn or appoint several arbitrary combination wherein; In molecule, 0.15≤x≤0.55,0.01≤y≤0.09; 0.01≤z≤0.09.
2. the preparation method of arbitrary long after glow luminous material claimed in claim 1, it is characterized in that by the metering ratio of each chemical composition in definite long after glow luminous material expression formula, taking each raw material carries out mixed grinding, again the uniform raw material powder of ground and mixed is placed in to temperature and is the environment of 800 ℃～1100 ℃, under reducing atmosphere, roasting is 8 hours～12 hours, be cooled to room temperature, obtain calcined material, calcinate is ground, make required long after glow luminous material.
CN201410355335.5A 2014-07-25 2014-07-25 Long persistence luminescent material with single substrate and adjustable persistence colors and preparation method of long persistence luminescent material Expired - Fee Related CN104194781B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410355335.5A CN104194781B (en) 2014-07-25 2014-07-25 Long persistence luminescent material with single substrate and adjustable persistence colors and preparation method of long persistence luminescent material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410355335.5A CN104194781B (en) 2014-07-25 2014-07-25 Long persistence luminescent material with single substrate and adjustable persistence colors and preparation method of long persistence luminescent material

Publications (2)

Publication Number Publication Date
CN104194781A true CN104194781A (en) 2014-12-10
CN104194781B CN104194781B (en) 2017-01-11

Family

ID=52080154

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410355335.5A Expired - Fee Related CN104194781B (en) 2014-07-25 2014-07-25 Long persistence luminescent material with single substrate and adjustable persistence colors and preparation method of long persistence luminescent material

Country Status (1)

Country Link
CN (1) CN104194781B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105838360A (en) * 2016-05-11 2016-08-10 上海应用技术学院 Fluorosilicate-chlorosilicate white phosphor and preparation method thereof
WO2020246395A1 (en) * 2019-06-04 2020-12-10 株式会社小糸製作所 Fluorescent material, wavelength conversion member, and lighting device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013045896A (en) * 2011-08-24 2013-03-04 Mitsubishi Chemicals Corp Light-emitting device
CN103923646A (en) * 2014-04-10 2014-07-16 上海应用技术学院 Yellow fluorescent powder and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013045896A (en) * 2011-08-24 2013-03-04 Mitsubishi Chemicals Corp Light-emitting device
CN103923646A (en) * 2014-04-10 2014-07-16 上海应用技术学院 Yellow fluorescent powder and preparation method thereof

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
HISAYOSHI DAICHO等: "A novel phosphor for glareless white light-emitting diodes", 《NAT.COMMUN.》 *
王育华等: "SrAl2O4: Eu2+, Dy3+的助熔剂法制备及其发光特性", 《无机化学学报》 *
耿秀娟等: "Sr2MgSi2O7:Eu2+,Dy3+蓝色长余辉发光材料的制备与发光性能研究", 《沈阳化工学院学报》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105838360A (en) * 2016-05-11 2016-08-10 上海应用技术学院 Fluorosilicate-chlorosilicate white phosphor and preparation method thereof
CN105838360B (en) * 2016-05-11 2018-05-04 上海应用技术学院 A kind of fluorine Chlorosilicate white emitting fluorescent powder and preparation method thereof
WO2020246395A1 (en) * 2019-06-04 2020-12-10 株式会社小糸製作所 Fluorescent material, wavelength conversion member, and lighting device
JP2020196824A (en) * 2019-06-04 2020-12-10 株式会社小糸製作所 Phosphor, wavelength conversion member and illumination device

Also Published As

Publication number Publication date
CN104194781B (en) 2017-01-11

Similar Documents

Publication Publication Date Title
Ma et al. Tunable emission, thermal stability and energy-transfer properties of SrAl2Si2O8: Ce3+/Tb3+ phosphors for w-LEDs
CN107189776B (en) Green silicate long-afterglow luminescent material and preparation method thereof
CN102051176A (en) Fluorescent material, manufacture method thereof and light-emitting device comprising fluorescent material
CN107974250B (en) Blue-green silicate ultra-long afterglow luminescent material and preparation method thereof
Wang et al. A new long-lasting phosphor Zr4+ and Eu3+ co-doped SrMg2 (PO4) 2
CN101402857B (en) Red luminous material for LED and producing process thereof
WO2013074158A1 (en) Green and yellow aluminate phosphors
CN105733580A (en) Long-afterglow luminescent material and preparation method thereof
CN102660266A (en) Yellow long afterglow light-emitting material and preparing method thereof
CN109666481A (en) A kind of long after glow luminous material and preparation method thereof
CN107603622A (en) Vanadate luminescent material and preparation method thereof
CN101899297B (en) Orange-yellow long-afterglow luminescent material and preparation method thereof
CN108949173B (en) Cyan silicate ultra-long afterglow luminescent material and preparation method thereof
CN103059859A (en) White ultra-long afterglow luminescent material and preparation method thereof
CN103396796B (en) Antimonate long-afterglow fluorescent powder and preparation method thereof
CN104194781B (en) Long persistence luminescent material with single substrate and adjustable persistence colors and preparation method of long persistence luminescent material
CN102127441A (en) Eu<2+> activated strontium pyrophosphate photoluminescence material and preparation method thereof
EP2565253B1 (en) Silicate luminescent material and production method thereof
CN103980889A (en) Silicate-based multi-color long-afterglow luminescent materials and preparation method thereof
CN107474838B (en) Blue-green long-afterglow luminescent material and preparation method thereof
CN104087299B (en) A kind of blue light activated aluminate-based red fluorescent material and preparation method and application
CN103224788B (en) Red fluorescent luminescent material and preparation method thereof
CN108276998B (en) Trivalent samarium ion doped barium gadolinium titanate red fluorescent powder and preparation method thereof
CN101705094B (en) Near ultraviolet excited blue-green fluorescent powder for semiconductor illumination and preparation method thereof
CN109294583B (en) Cerium ion doped barium gadolinium titanate blue fluorescent powder for white light LED and preparation method thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170111

Termination date: 20180725

CF01 Termination of patent right due to non-payment of annual fee