CN108774522A - A kind of molybdate red fluorescent powder of white light LEDs scheelite type and preparation method thereof - Google Patents
A kind of molybdate red fluorescent powder of white light LEDs scheelite type and preparation method thereof Download PDFInfo
- Publication number
- CN108774522A CN108774522A CN201810859162.9A CN201810859162A CN108774522A CN 108774522 A CN108774522 A CN 108774522A CN 201810859162 A CN201810859162 A CN 201810859162A CN 108774522 A CN108774522 A CN 108774522A
- Authority
- CN
- China
- Prior art keywords
- white light
- compound
- light leds
- fluorescent powder
- red fluorescent
- 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.)
- Pending
Links
- 239000000843 powder Substances 0.000 title claims abstract description 46
- AUNAPVYQLLNFOI-UHFFFAOYSA-L [Pb++].[Pb++].[Pb++].[O-]S([O-])(=O)=O.[O-][Cr]([O-])(=O)=O.[O-][Mo]([O-])(=O)=O Chemical compound [Pb++].[Pb++].[Pb++].[O-]S([O-])(=O)=O.[O-][Cr]([O-])(=O)=O.[O-][Mo]([O-])(=O)=O AUNAPVYQLLNFOI-UHFFFAOYSA-L 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 229910015667 MoO4 Inorganic materials 0.000 claims abstract description 23
- 239000000126 substance Substances 0.000 claims abstract description 15
- 150000001875 compounds Chemical class 0.000 claims description 17
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 6
- 239000010431 corundum Substances 0.000 claims description 6
- 229910001940 europium oxide Inorganic materials 0.000 claims description 6
- AEBZCFFCDTZXHP-UHFFFAOYSA-N europium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Eu+3].[Eu+3] AEBZCFFCDTZXHP-UHFFFAOYSA-N 0.000 claims description 6
- 229910000476 molybdenum oxide Inorganic materials 0.000 claims description 6
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 claims description 6
- 229910052693 Europium Inorganic materials 0.000 claims description 5
- 229910001422 barium ion Inorganic materials 0.000 claims description 4
- 229910001451 bismuth ion Inorganic materials 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 4
- 239000011812 mixed powder Substances 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- -1 europium ion Chemical class 0.000 claims description 3
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 claims description 2
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 229910052797 bismuth Inorganic materials 0.000 claims 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 230000005855 radiation Effects 0.000 claims 1
- 230000005284 excitation Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000011159 matrix material Substances 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 239000012071 phase Substances 0.000 description 8
- 229910000416 bismuth oxide Inorganic materials 0.000 description 5
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 239000012856 weighed raw material Substances 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052571 earthenware Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000695 excitation spectrum Methods 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 229910004829 CaWO4 Inorganic materials 0.000 description 1
- 206010017577 Gait disturbance Diseases 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910001420 alkaline earth metal ion Inorganic materials 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910019990 cerium-doped yttrium aluminum garnet Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002284 excitation--emission spectrum Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000010532 solid phase synthesis reaction Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 229910019655 synthetic inorganic crystalline material Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
- C09K11/7736—Vanadates; Chromates; Molybdates; Tungstates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
The invention discloses a kind of molybdate red fluorescent powder of white light LEDs scheelite type and preparation method thereof, the chemical formula of the red fluorescence powder is BaBi2(1‑x)Eu2x(MoO4)4, wherein 0<x<1.Matrix BaBi of the present invention2(MoO4)4For the scheelite-type structure of monoclinic phase, there is lower symmetry, therefore luminous intensity is high.Its feature of red fluorescence powder provided by the invention is synthesis temperature down to 750 DEG C, at low cost, is very beneficial for industrialized production；On the other hand its excitation peak covers the range of 200~400 nm wider.Red fluorescence powder provided by the invention is under near ultraviolet excitated, the bright feux rouges of 617nm or so is sent out, chromaticity coordinate is in close proximity to the feux rouges chromaticity coordinate (0.67,0.33) of National Television System Committee's standard, excitation purity is up to 98%, has huge application prospect.
Description
Technical field
The invention belongs to field of light emitting materials, and in particular to a kind of trivalent europium ion Eu3+The novel scheelite type of activation is red
Color fluorescent powder and preparation method thereof can use in white light LEDs as red fluorescence powder.
Background technology
White light LEDs due to highly efficient durable, energy conservation and environmental protection is vdiverse in function, flexible design the advantages that receive it is extensive
Concern.It is still to coat one layer of cerium-doped yttrium aluminum garnet (YAG on GaInN blue-light LED chips on the market now:Ce3+) yellow
The scheme of fluorescent powder realizes white light, but this white light causes its colour rendering index (CRI) relatively low, colour temperature (CCT) in default of feux rouges
It is higher, and more successful nitride red fluorescent powder, preparation condition are harsh, cost is higher, and absorption region is wide, is easy to draw
Rise white light color drift, and develop Y2O2S:Eu3+Or Y2O3:Eu3+Red fluorescence powder, since the absorption of its near ultraviolet is not strong, surely
The defects of qualitative difference, it is difficult to it is applied in white light LEDs, the insufficient stumbling-block greatly developed at white light LEDs of red fluorescence powder,
Therefore develop that manufacturing cost is low, and good with chip matching, the red fluorescence powder of good luminescence property has great importance.
Scheelite-type structure general formula is ABO4 (CaWO4), with the larger divalent alkaline-earth metal ion (Ae) of radius and rare earth from
Sub (Ln) replaces the Ca ions in A cases, and a series of monoclinic phase scheelite type compound AeLn can be obtained2(MO4)4, this one kindization
It is vacancy to close the location A in object to have 25%, causes [AO8] polyhedron greatly distorts, to be conducive to Eu3+Electric dipole transition hair
Light.Document [GUO C, YANG H K, FU Z, et al. A Potential Red-Emitting Phosphor BaGd2
(MoO4)4:Eu3+ for Near‐UV White LED [J]. Journal of the American Ceramic
Society, 2009, 92(8):1713-1718.] and [QIN L, HUANG Y, TSUBOI T, et al. The red-
emitting phosphors of Eu3+-activated MR2(MoO4)4 (M=Ba, Sr, Ca; R=La3+, Gd3+, Y3+)
for light emitting diodes [J]. Materials Research Bulletin, 2012, 47(12):
4498-4502.] BaGd is reported respectively2(MoO4)4:Eu3+And BaY2(MoO4)4:Eu3+Red fluorescence powder, it is characterized in that with solid
Phase method is prepared at 850-1000 DEG C, and excitation peak is relatively narrow.
Invention content
It is an object of the invention to overcome the red color components of existing white light LEDs shortage, a kind of high brightness is provided, it is high
Excitation purity, use scope is extensive, the molybdate red fluorescent powder of white light LEDs scheelite type and preparation method thereof that performance is stablized.
In order to solve the above technical problems, the technical scheme is that：A kind of white light LEDs scheelite type is molybdate red
Fluorescent powder, it is characterised in that：The chemical formula of the red fluorescence powder is BaBi2(1-x)Eu2x(MoO4)4, wherein 0<x<1.
The luminous chromaticity coordinate of the red fluorescence is (0.66~0.68,0.32~0.34).
The preparation method of the above-mentioned molybdate red fluorescent powder of white light LEDs scheelite type, it is characterised in that including walking as follows
Suddenly：
Step 1：According to chemical formula BaBi2(1-x)Eu2x(MoO4)4, wherein 0<x<1, it is counted according to the chemistry of each element in chemical formula
Ratio is measured, wherein x is Eu3+The mole percent of doping weighs Ba containing barium ions2+Compound, Bi containing bismuth ion3+Compound,
Mo containing molybdenum ion6+Compound and Eu containing europium ion3+Compound be ground batch mixing, obtain mixed powder；
Step 2：Mixed powder in step 1 is put into dry corundum crucible, and crucible is put into Muffle furnace in sky
Be heat-treated under gas atmosphere, it is cooling after grinding obtain it is final
BaBi2(1-x)Eu2x(MoO4)4, wherein 0<x<1 red fluorescence powder.
Contain barium ions Ba in the step 12+Compound be barium carbonate, the Bi containing bismuth ion3+Compound
For bismuth oxide, described contains molybdenum ion Mo6+Compound be molybdenum oxide, contain europium ion Eu3+Compound be europium oxide.
Milling time is 0.5~1 hour in the step 1.
Heat treating regime is in the step 2：From room temperature 750 DEG C are risen to the speed of 3~5 DEG C/min and in the highest temperature
Degree heat preservation 6~10 hours.
Compared with prior art, it is the advantages of technical solution of the present invention：
(1) red fluorescence powder synthesis temperature provided by the invention greatly reduces manufacturing cost down to 750 DEG C；
(2) red fluorescence powder provided by the invention utilizes Bi3+The special electronic structure of ion makes red fluorescence powder have wider
Excitation peak；
(3) fluorescent powder doping concentration of the present invention is 60 mol%, hence it is evident that product brightness can be improved, near ultraviolet excitated
Under launch the feux rouges that main peak is 617 nm or so, excitation purity may be up to 98% or more；
(4) chromaticity coordinate of red light emitting phosphor of the invention in close proximity to NTSC standard feux rouges coordinate (0.67,
0.33)。
Description of the drawings
Fig. 1 is the scheelite type molybdate matrix BaBi prepared by the present invention2(MoO4)4Structure chart and Bi3+Ion
Coordination environment；
Fig. 2 is the XRD spectrum of the red fluorescence powder prepared by the present invention；
Fig. 3 is the excitation spectrum and launching light spectrogram of the red fluorescence powder prepared by the present invention；
Fig. 4 is the CIE1931 chromaticity coordinate figures of the red fluorescence powder prepared by the present invention.
Specific implementation mode
It is of the invention to reach the technological means and effect that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Preferred embodiment, to the molybdate red fluorescent powder of a kind of white light LEDs scheelite type proposed according to the present invention and its preparation side
Specific implementation mode, method, step, feature and its effect of method, detailed description are as follows：
Embodiment 1：
As x=0.2, the chemical formula BaBi of red fluorescence powder1.6Eu0.4(MoO4)4, according to the stoichiometry of chemical formula each element
Than weighing barium carbonate 0.2960g, bismuth oxide 0.5592g, europium oxide 0.1056g, molybdenum oxide 0.8636g respectively；By what is weighed
Raw material is put into ground 0.5 hour in agate mortar after obtain uniform mixture, gained mixture is put into dry corundum earthenware
In crucible, crucible is put into Muffle furnace, is heat-treated in air atmosphere, heat treating regime is：With the speed of 3 DEG C/min from room temperature
750 DEG C are warming up to, and keeps the temperature 10h, block product is obtained with stove natural cooling, is obtained finally after block product is ground
BaBi1.6Eu0.4(MoO4)4Red fluorescence powder, the object phase of the fluorescent powder is as shown in Fig. 2, be the BaBi of monoclinic phase2(MoO4)4Structure,
It shines and is mainly derived from Eu3+'s5D0→7F2Transition luminescence, chromaticity coordinate are (0.6691,0.3306).
Embodiment 2：
As x=0.4, the chemical formula BaBi of red fluorescence powder1.2Eu0.8(MoO4)4, according to the stoichiometry of chemical formula each element
Than weighing barium carbonate 0.2960g, bismuth oxide 0.4194g, europium oxide 0.2112g, molybdenum oxide 0.8636g respectively；By what is weighed
Raw material is put into ground 1 hour in agate mortar after obtain uniform mixture, gained mixture is put into dry corundum crucible
In, crucible is put into Muffle furnace, is heat-treated in air atmosphere, heat treating regime is：With the speed of 4 DEG C/min from room temperature liter
Temperature keeps the temperature 8h to 750 DEG C, obtains block product with stove natural cooling, is obtained finally after block product is ground
BaBi1.2Eu0.8(MoO4)4Red fluorescence powder, the object phase of the fluorescent powder are glimmering as shown in Fig. 2, its crystalline phase is mainly double-perovskite phase
Light powder sends out bright feux rouges under near ultraviolet excitated, and chromaticity coordinate is (0.6715,0.3283).
Embodiment 3：
As x=0.6, the chemical formula BaBi of red fluorescence powder0.8Eu1.2(MoO4)4, according to the stoichiometry of chemical formula each element
Than weighing barium carbonate 0.2960g, bismuth oxide 0.2796g, europium oxide 0.3167g, molybdenum oxide 0.8636g respectively；By what is weighed
Raw material is put into ground 0.5 hour in agate mortar after obtain uniform mixture, gained mixture is put into dry corundum earthenware
In crucible, crucible is put into Muffle furnace, is heat-treated in air atmosphere, heat treating regime is：With the speed of 5 DEG C/min from room temperature
750 DEG C are warming up to, and keeps the temperature 6h, block product is obtained with stove natural cooling, is obtained finally after block product is ground
BaBi0.8Eu1.2(MoO4)4Red fluorescence powder, its crystalline phase is as shown in Fig. 2, be still BaBi after testing2(MoO4)4Crystalline phase, excitation
Spectrum and emission spectrum are launched relatively strong as shown in figure 3, near ultraviolet region with wider excitation band under near ultraviolet excitated
Feux rouges, chromaticity coordinate is illustrated in figure 4 (0.672,0.328), and excitation purity is up to 98% or more.
Embodiment 4：
As x=0.8, the chemical formula BaBi of red fluorescence powder0.4Eu1.6(MoO4)4, according to the stoichiometry of chemical formula each element
Than weighing barium carbonate 0.2960g, bismuth oxide 0.1398g, europium oxide 0.4223g, molybdenum oxide 0.8636g respectively；By what is weighed
Raw material is put into ground 1 hour in agate mortar after obtain uniform mixture, gained mixture is put into dry corundum crucible
In, crucible is put into Muffle furnace, is heat-treated in air atmosphere, heat treating regime is：With the speed of 5 DEG C/min from room temperature liter
Temperature keeps the temperature 4h to 750 DEG C, obtains block product with stove natural cooling, is obtained finally after block product is ground
BaBi0.4Eu1.6(MoO4)4Red fluorescence powder, under near ultraviolet excitated, luminescent chromaticity coordinate is (0.6724,0.3274).
Claims (6)
1. a kind of molybdate red fluorescent powder of white light LEDs scheelite type, it is characterised in that：The chemical formula of the red fluorescence powder
For BaBi2(1-x)Eu2x(MoO4)4, wherein 0<x<1.
2. the molybdate red fluorescent powder of white light LEDs scheelite type according to claim 1, it is characterised in that：It is described red
The chromaticity coordinate of color fluorescence radiation is (0.66~0.68,0.32~0.34).
3. the preparation method of the molybdate red fluorescent powder of white light LEDs scheelite type according to claim 1, it is characterised in that
Include the following steps：
Step 1：According to chemical formula BaBi2(1-x)Eu2x(MoO4)4, wherein 0<x<1, it is counted according to the chemistry of each element in chemical formula
Ratio is measured, wherein x is Eu3+The mole percent of doping weighs Ba containing barium ions2+Compound, Bi containing bismuth ion3+Compound,
Mo containing molybdenum ion6+Compound and Eu containing europium ion3+Compound be ground batch mixing, obtain mixed powder；
Step 2：Mixed powder in step 1 is put into dry corundum crucible, and crucible is put into Muffle furnace in sky
It is heat-treated under gas atmosphere, is ground after cooling and obtain final BaBi2(1-x)Eu2x(MoO4)4, wherein 0<x<1 red is glimmering
Light powder.
4. the preparation method of the molybdate red fluorescent powder of white light LEDs scheelite type according to claim 3, feature exist
In：Contain barium ions Ba in the step 12+Compound be barium carbonate, the Bi containing bismuth ion3+Compound be oxidation
Bismuth, described contains molybdenum ion Mo6+Compound be molybdenum oxide, contain europium ion Eu3+Compound be europium oxide.
5. the preparation method of the molybdate red fluorescent powder of white light LEDs scheelite type according to claim 3, feature exist
In：Milling time is 0.5~1 hour in the step 1.
6. the preparation method of the molybdate red fluorescent powder of white light LEDs scheelite type according to claim 3, feature exist
In：Heat treating regime is in the step 2：750 DEG C are risen to from room temperature and keep the temperature in maximum temperature with the speed of 3~5 DEG C/min
6~10 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810859162.9A CN108774522A (en) | 2018-07-31 | 2018-07-31 | A kind of molybdate red fluorescent powder of white light LEDs scheelite type and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810859162.9A CN108774522A (en) | 2018-07-31 | 2018-07-31 | A kind of molybdate red fluorescent powder of white light LEDs scheelite type and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108774522A true CN108774522A (en) | 2018-11-09 |
Family
ID=64028435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810859162.9A Pending CN108774522A (en) | 2018-07-31 | 2018-07-31 | A kind of molybdate red fluorescent powder of white light LEDs scheelite type and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108774522A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110844937A (en) * | 2019-09-16 | 2020-02-28 | 上海大学 | Preparation method of reversible thermochromic bismuth molybdate powder |
| CN111170740A (en) * | 2020-01-13 | 2020-05-19 | 景德镇陶瓷大学 | Efficient red fluorescent powder without thermal quenching and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104804738A (en) * | 2015-05-18 | 2015-07-29 | 厦门砺德光电科技有限公司 | Near-ultraviolet-excited white-light LED (light-emitting diode) fluorescent powder and preparation method thereof |
-
2018
- 2018-07-31 CN CN201810859162.9A patent/CN108774522A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104804738A (en) * | 2015-05-18 | 2015-07-29 | 厦门砺德光电科技有限公司 | Near-ultraviolet-excited white-light LED (light-emitting diode) fluorescent powder and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| MD. MASUQUL HAQUE ET AL.: ""Luminescent properties of Eu3+ activated MLa2(MoO4)4 based (M=Ba, Sr and Ca) novel red-emitting phosphors", 《MATERIALS LETTERS》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110844937A (en) * | 2019-09-16 | 2020-02-28 | 上海大学 | Preparation method of reversible thermochromic bismuth molybdate powder |
| CN110844937B (en) * | 2019-09-16 | 2021-05-07 | 上海大学 | Preparation method of reversible thermochromic bismuth molybdate powder |
| CN111170740A (en) * | 2020-01-13 | 2020-05-19 | 景德镇陶瓷大学 | Efficient red fluorescent powder without thermal quenching and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Bandi et al. | Luminescence and energy transfer of Eu3+ or/and Dy3+ co-doped in Sr3AlO4F phosphors with NUV excitation for WLEDs | |
| Hakeem et al. | Structural and photoluminescence properties of La1-xNaCaGa3PZrO12 doped with Ce3+, Eu3+, and Tb3+ | |
| CN104087292B (en) | A kind of Mn 4+the red illuminating material adulterated, preparation method and novel illumination light source | |
| CN115368893B (en) | Sodium gadolinium gallium germanium garnet Dan Jiqing light fluorescent powder and preparation method thereof | |
| CN111234814B (en) | Mn (manganese)4+Doped nitrogen oxide red fluorescent powder and preparation method thereof | |
| CN112940723A (en) | Bi3+、Eu3+Ion co-activated lutecium salt fluorescent powder and preparation method thereof | |
| CN114395393A (en) | Eu (Eu)3+Doped red fluorescent powder and preparation method thereof | |
| CN108998025A (en) | A kind of LED silicate-base red fluorescence powder and preparation method thereof | |
| CN107603622B (en) | Vanadate luminescent material and preparation method thereof | |
| CN113249125A (en) | Ce3+Doped silicate-based green fluorescent powder and preparation method and application thereof | |
| CN113481001B (en) | Copper ion doped gallate-based red long-afterglow material and preparation method thereof | |
| CN108774522A (en) | A kind of molybdate red fluorescent powder of white light LEDs scheelite type and preparation method thereof | |
| CN111607397B (en) | Eu (Eu) 2+ -Eu 3+ Co-doped silicate fluorescent powder and preparation method and application thereof | |
| CN107129805B (en) | Europium ion doped silicate white light fluorescent powder and preparation method thereof | |
| CN112625683A (en) | Germanate type red fluorescent powder and preparation method thereof | |
| CN110591711B (en) | Gallate red fluorescent powder for white light LED and preparation method thereof | |
| CN104059640B (en) | A kind of borate fluorescent powder substrate and the preparation method of fluorescent material | |
| CN111187621A (en) | Europium-manganese co-doped phosphate fluorescent powder and preparation method thereof | |
| CN108276998B (en) | Trivalent samarium ion doped barium gadolinium titanate red fluorescent powder and preparation method thereof | |
| CN108034423B (en) | Mn (manganese)2+Ion-doped silicate red fluorescent powder, preparation method and application | |
| CN108587621A (en) | A kind of ultraviolet or near ultraviolet excitated white light LEDs Color tunable silicate fluorescent powder and preparation method thereof | |
| CN112480918B (en) | Manganese-doped deep red light fluorescent powder material and preparation method thereof | |
| CN104327852B (en) | Silicon/germinate phosphor, preparation method and application thereof | |
| CN109294583B (en) | Cerium ion doped barium gadolinium titanate blue fluorescent powder for white light LED and preparation method thereof | |
| CN112980442A (en) | Dy (Dy)3+Ion activated lutecium salt white fluorescent powder and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181109 |