CN111154488A - Terbium-doped germanate green fluorescent powder for white light LED and preparation method thereof - Google Patents
Terbium-doped germanate green fluorescent powder for white light LED and preparation method thereof Download PDFInfo
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- CN111154488A CN111154488A CN202010050022.4A CN202010050022A CN111154488A CN 111154488 A CN111154488 A CN 111154488A CN 202010050022 A CN202010050022 A CN 202010050022A CN 111154488 A CN111154488 A CN 111154488A
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- 239000000843 powder Substances 0.000 title claims abstract description 41
- 108010043121 Green Fluorescent Proteins Proteins 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 27
- 239000000126 substance Substances 0.000 claims abstract description 23
- 150000002500 ions Chemical class 0.000 claims abstract description 7
- 229910052765 Lutetium Inorganic materials 0.000 claims abstract description 3
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 3
- 239000002994 raw material Substances 0.000 claims description 30
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium dioxide Chemical compound O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 15
- 238000000227 grinding Methods 0.000 claims description 13
- 238000005245 sintering Methods 0.000 claims description 13
- -1 rare earth carbonate Chemical class 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 9
- 229940119177 germanium dioxide Drugs 0.000 claims description 9
- 239000004570 mortar (masonry) Substances 0.000 claims description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 8
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 8
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 3
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- 229910000316 alkaline earth metal phosphate Inorganic materials 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 3
- 238000003801 milling Methods 0.000 claims 1
- 239000007858 starting material Substances 0.000 claims 1
- 230000005284 excitation Effects 0.000 abstract description 22
- 229910052771 Terbium Inorganic materials 0.000 abstract description 15
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 abstract description 12
- 239000011159 matrix material Substances 0.000 abstract description 5
- 238000010532 solid phase synthesis reaction Methods 0.000 abstract description 3
- 238000000295 emission spectrum Methods 0.000 abstract description 2
- 238000000695 excitation spectrum Methods 0.000 abstract description 2
- 239000000758 substrate Substances 0.000 abstract description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 14
- 229910052593 corundum Inorganic materials 0.000 description 8
- 239000010431 corundum Substances 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- 238000004321 preservation Methods 0.000 description 4
- 239000011575 calcium Substances 0.000 description 3
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 3
- 239000012190 activator Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000002189 fluorescence spectrum Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000634 powder X-ray diffraction Methods 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011363 dried mixture Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910001938 gadolinium oxide Inorganic materials 0.000 description 1
- 229940075613 gadolinium oxide Drugs 0.000 description 1
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 229910003443 lutetium oxide Inorganic materials 0.000 description 1
- MPARYNQUYZOBJM-UHFFFAOYSA-N oxo(oxolutetiooxy)lutetium Chemical compound O=[Lu]O[Lu]=O MPARYNQUYZOBJM-UHFFFAOYSA-N 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- HYXGAEYDKFCVMU-UHFFFAOYSA-N scandium oxide Chemical compound O=[Sc]O[Sc]=O HYXGAEYDKFCVMU-UHFFFAOYSA-N 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- 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
- C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
- C09K11/7775—Germanates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
The invention discloses terbium-doped germanate green fluorescent powder for a white light LED and a preparation method thereof, wherein the general chemical composition formula of the fluorescent powder is represented as follows: CaY x‑y2‑Ln y Ge4O12:xTb3+Wherein Ln is one or more of Sc, Gd, Lu and La,x、ythe molar ratio coefficients of the doped ions are respectively as follows: 0.01-0.01 ≤x≤2.00，0≤yLess than or equal to 2.00. The invention takes germanate as a substrate and Tb3+The ions are active ions, and the terbium ion-doped green fluorescent powder with germanate as a matrix is prepared by a high-temperature solid phase method. The excitation spectrum of the green fluorescent powder covers 300-400 nm wave bands, several main excitation peaks are near 312nm, 340nm, 351nm, 369nm and 377nm, the emission spectrum covers the range of 450-650 nm, the main peaks are near 487 nm, 543nm, 583nm and 618nm, green light can be emitted under the excitation of near ultraviolet or blue light, the luminous intensity is high, the chemical property is stable, the luminous efficiency is high, and the green fluorescent powder is suitable for a white light LED.
Description
Technical Field
The invention relates to the technical field of rare earth luminescent materials, and mainly relates to rare earth Tb3+An ion-doped germanate green fluorescent material and a preparation method thereof.
Background
Because of its advantages of high Light-Emitting efficiency, long service life, energy saving and environmental protection, Light-Emitting Diode (LED) is regarded as a novel semiconductor illumination Light source, and has been widely used in the fields of indoor and outdoor illumination, indicator lights, signal lights, etc. LEDs are also widely used in the display field, including advertising light boxes, display screens, and the like. The LED realizes the light emitting mode that the light emitted by the near ultraviolet chip is mainly used as exciting light, so that the fluorescent powder generates stimulated emission to emit light. At present, the most mature technical scheme for preparing the white light LED is to adopt a blue light LED chip and YAG yellow light fluorescent powder for common packaging, and the blue light LED chip and the YAG yellow light fluorescent powder are widely used as commercial white light LEDs. The other way to obtain white light is to use a near ultraviolet chip to excite the red, green and blue light-emitting materials, the emission of which covers the whole visible light region, the white light color rendering property is better, and the white light emission with low color temperature can be realized.
The structure and performance of the fluorescent powder play an important role in LED lamps, and the fluorescent powder with different luminescent colors, high luminescent efficiency, small thermal quenching effect and the like needs to be developed to meet the requirements of the lamps. As the ultraviolet-near ultraviolet LED chip excites red, green and blue phosphors, the luminous efficiency of the green phosphor is lower than that of the phosphors of other two colors, so that the luminous flux of the whole LED is affected. Tb3+Has great potential as a good green fluorescent powder activator. Therefore, in order to widen the application of the white light LED and promote the development of the LED industry, the development of the terbium ion-doped green fluorescent powder excited by the near ultraviolet chip and having good luminous performance and good chemical stability is of great significance.
Disclosure of Invention
The invention aims to provide a terbium ion doped green fluorescent material taking germanate as a matrix, which can emit green fluorescence with a main light peak of 543nm under the excitation of near ultraviolet light, and the fluorescent powder has high luminous intensity and stable chemical property.
The invention also aims to provide a preparation method of the terbium ion-doped green fluorescent material. The fluorescent powder utilizes terbium ions as an activator, and adopts a high-temperature solid phase method to directly synthesize novel terbium ion-doped green fluorescent powder under mild conditions and air atmosphere.
In order to achieve the purpose, the invention adopts the following technical scheme:
a terbium-doped germanate green fluorescent powder for a white light LED is represented by a chemical composition general formula: CaY x-y2-Ln y Ge4O12:xTb3+Wherein Ln is one or more of Sc, Gd, Lu and La,x、ythe molar ratio coefficients of the doped ions are respectively as follows: 0.01-0.01 ≤x≤ 2.00，0≤y≤2.00。
The preparation method of the terbium-doped germanate green fluorescent powder for the white light LED comprises the following steps: accurately weighing raw materials according to chemical compositions, putting the raw materials into a mortar, adding ethanol, fully grinding the raw materials until the raw materials are uniformly mixed, drying the mixed raw materials in an oven, transferring the dried mixed raw materials into a crucible, putting the crucible into a muffle furnace, heating the crucible in a gradient manner, sintering the raw materials in an air atmosphere, cooling the sintered raw materials to room temperature, and grinding the product to obtain the product.
Preferably, in the above preparation method, the raw materials are: one or more of rare earth oxide, rare earth carbonate, rare earth nitrate and rare earth oxalate; one or more of alkaline earth metal carbonate, alkaline earth metal bicarbonate and alkaline earth metal phosphate; germanium dioxide.
Preferably, in the preparation method, the grinding time is 20-40 min; the temperature of the oven is 100 ℃; the temperature rise rate of the muffle furnace is 5-10 ℃/min, the sintering temperature is 1200-1300 ℃, and the sintering time is 3-20 h.
Compared with the prior art, the invention has the following beneficial effects:
the invention takes germanate as a substrate and Tb3+The ions are active ions, and the terbium ion-doped green fluorescent powder with germanate as a matrix is prepared by a high-temperature solid phase method. The excitation spectrum of the green fluorescent powder covers 300-400 nm, and several main excitation peaks are at 312nm, 340nm, 351nm, 369nm and 37 nmThe emission spectrum of the fluorescent material is near 7nm, the range of 450-650 nm is covered, the main peaks are near 487 nm, 543nm, 583nm and 618nm, green light can be emitted under the excitation of near ultraviolet or blue light, the luminous intensity is high, the chemical property is stable, the luminous efficiency is high, and the fluorescent material is suitable for a white light LED. The green fluorescent powder has simple manufacturing method and process, cheap and easily obtained raw materials and easy industrial production, so the green fluorescent powder can be used as novel green fluorescent powder, can be applied to near ultraviolet light excitation of tricolor white light LED fluorescent powder and can also be applied to various display devices.
Drawings
FIG. 1 shows germanate matrix and novel Tb prepared in example 13+An X-ray powder diffraction pattern of the doped green phosphor.
FIG. 2 is Tb prepared in example 23+The fluorescence emission spectrum of the doped green fluorescent powder.
Detailed Description
Example 1
Mixing calcium carbonate (CaCO)3) Yttrium oxide (Y)2O3) Germanium dioxide (GeO)2) And terbium (Tb) oxide4O7) The raw materials are accurately weighed according to the quantity ratio of Ca to Y to Ge to Tb = 1 to 1.8 to 4 to 0.2, placed in an agate mortar, added with a proper amount of ethanol, fully and uniformly ground, placed in an oven for drying, poured into a corundum crucible after drying, then placed in a high temperature furnace for sintering at 1250 ℃ for 10 hours. After the reaction is finished, naturally cooling the mixture to room temperature, and grinding the mixture uniformly to obtain a white powder sample, wherein the chemical composition of the white powder sample is CaY1.8Ge4O12: 0.2Tb3+. The excitation band is wide, a sample can be effectively excited by 300-400 nm excitation light, the range of 450-650 nm is covered by emitted light, the main emission wavelength is 543nm, the green light emission luminous intensity is high, the chemical property is stable, and the environment is not harmed.
FIG. 1 shows the XRD diffraction pattern and standard card diffraction peaks of the green phosphor and germanate matrix prepared in example 1 of the present invention, wherein the X-ray powder diffraction results of the sample of example 1 are shown in FIG. 1CYGO:10%Tb3+It can be seen that the green phosphor prepared in example 1 of the present invention is CaY2Ge4O12Crystalline phase, all diffraction peaks and CaY2Ge4O12Peaks in the standard card (ICSD # 172613) were consistent.
Example 2
Mixing calcium carbonate (CaCO)3) Yttrium oxide (Y)2O3) Germanium dioxide (GeO)2) And terbium (Tb) oxide4O7) The raw materials are accurately weighed according to the quantity ratio of Ca to Y to Ge to Tb = 1 to 1.0 to 4 to 1.0, placed in an agate mortar, added with a proper amount of ethanol, fully and uniformly ground, placed in an oven for drying, poured into a corundum crucible after drying, then placed in a high temperature furnace for sintering at 1250 ℃ for 10 hours. After the reaction is finished, naturally cooling the mixture to room temperature, and grinding the mixture uniformly to obtain a white powder sample, wherein the chemical composition of the white powder sample is CaY1.0Ge4O12:1.0Tb3+. The excitation band is wide, a sample can be effectively excited by 300-400 nm excitation light, the range of 450-650 nm is covered by emitted light, the main emission wavelength is 543nm, the green light emission luminous intensity is high, the chemical property is stable, and the environment is not harmed.
FIG. 2 is a fluorescence emission spectrum of the green phosphor prepared in example 2 of the present invention under the excitation of 377nm excitation light. As can be seen from fig. 2, the green phosphor prepared in example 2 of the present invention has a main emission wavelength of 543nm, has a high emission peak, and exhibits strong green emission, so that it can be used as a novel green LED phosphor that can be effectively excited by near-ultraviolet light.
Example 3
Mixing calcium carbonate (CaCO)3) Germanium dioxide (GeO)2) And terbium (Tb) oxide4O7) Accurately weighing the raw materials according to the quantity ratio of Ca to Ge to Tb = 1 to 4 to 2.0, putting the raw materials into an agate mortar, adding a proper amount of ethanol, fully and uniformly grinding, putting the mixture into an oven for drying, pouring the dried mixture into a corundum crucible, putting the corundum crucible into a high-temperature furnace, sintering at 1250 ℃ for 1And 0 h. After the reaction is finished, naturally cooling the mixture to room temperature, and grinding the mixture uniformly to obtain a white powder sample, wherein the chemical composition of the white powder sample is CaTb2Ge4O12. The excitation band is wide, a sample can be effectively excited by 300-400 nm excitation light, the range of 450-650 nm is covered by emitted light, the main emission wavelength is 543nm, the green light emission luminous intensity is high, the chemical property is stable, and the environment is not harmed.
Example 4
Mixing calcium carbonate (CaCO)3) Gadolinium oxide (Gd)2O3) Germanium dioxide (GeO)2) And terbium (Tb) oxide4O7) The raw materials are accurately weighed as raw materials, placed in an agate mortar, added with a proper amount of ethanol, fully and uniformly ground, placed in an oven for drying, poured into a corundum crucible after drying, placed in a high-temperature furnace for sintering at 1250 ℃, and the heat preservation time is 10 hours. After the reaction is finished, naturally cooling the mixture to room temperature, and grinding the mixture uniformly to obtain a white powder sample, wherein the chemical composition of the white powder sample is CaGd1.0Ge4O12: 1.0Tb3+. The excitation band is wide, a sample can be effectively excited by 300-400 nm excitation light, the range of 450-650 nm is covered by emitted light, the main emission wavelength is 543nm, the green light emission luminous intensity is high, the chemical property is stable, and the environment is not harmed.
Example 5
Mixing calcium carbonate (CaCO)3) Lanthanum oxide (La)2O3) Germanium dioxide (GeO)2) And terbium (Tb) oxide4O7) The raw materials are accurately weighed as raw materials, placed in an agate mortar, added with a proper amount of ethanol, fully and uniformly ground, placed in an oven for drying, poured into a corundum crucible after drying, placed in a high-temperature furnace for sintering at 1250 ℃, and the heat preservation time is 10 hours. After the reaction is finished, naturally cooling the mixture to room temperature, and grinding the mixture uniformly to obtain a white powder sample, wherein the chemical composition of the white powder sample is CaLa1.0Ge4O12: 1.0Tb3+. The excitation band is wide, a sample can be effectively excited by 300-400 nm excitation light, the range of 450-650 nm is covered by emission light, the main emission wavelength is 543nm, and the green emission luminescence is strongHigh in degree, stable in chemical property and harmless to environment.
Example 6
Mixing calcium carbonate (CaCO)3) Lutetium oxide (Lu)2O3) Germanium dioxide (GeO)2) And terbium (Tb) oxide4O7) The raw materials are accurately weighed as raw materials, placed in an agate mortar, added with a proper amount of ethanol, fully and uniformly ground, placed in an oven for drying, poured into a corundum crucible after drying, placed in a high-temperature furnace for sintering at 1250 ℃, and the heat preservation time is 10 hours. After the reaction is finished, naturally cooling the mixture to room temperature, and grinding the mixture uniformly to obtain a white powder sample, wherein the chemical composition of the white powder sample is CaLu1.0Ge4O12: 1.0Tb3+. The excitation band is wide, a sample can be effectively excited by 300-400 nm excitation light, the range of 450-650 nm is covered by emitted light, the main emission wavelength is 543nm, the green light emission luminous intensity is high, the chemical property is stable, and the environment is not harmed.
Example 7
Mixing calcium carbonate (CaCO)3) Yttrium oxide (Y)2O3) Scandium oxide (Sc)2O3) Germanium dioxide (GeO)2) And terbium (Tb) oxide4O7) The raw materials are accurately weighed as raw materials, placed in an agate mortar, added with a proper amount of ethanol, fully and uniformly ground, placed in an oven for drying, poured into a corundum crucible after drying, placed in a high-temperature furnace for sintering at 1250 ℃, and the heat preservation time is 10 hours. After the reaction is finished, naturally cooling the mixture to room temperature, and grinding the mixture uniformly to obtain a white powder sample, wherein the chemical composition of the white powder sample is CaY1.78Sc0.02Ge4O12: 0.2Tb3+. The excitation band is wide, a sample can be effectively excited by 300-400 nm excitation light, the range of 450-650 nm is covered by emitted light, the main emission wavelength is 543nm, the green light emission luminous intensity is high, the chemical property is stable, and the environment is not harmed.
Claims (4)
1. A terbium-doped germanate green fluorescent powder for a white light LED is represented by a chemical composition general formula: CaY x-2- y Ln y Ge4O12:xTb3+Wherein Ln is one or more of Sc, Gd, Lu and La,x、ythe molar ratio coefficients of the doped ions are respectively as follows: 0.01-0.01 ≤x≤ 2.00，0≤y≤2.00。
2. The method for preparing terbium-doped germanate green phosphor for white light LEDs according to claim 1, comprising the steps of: accurately weighing raw materials according to chemical compositions, putting the raw materials into a mortar, adding ethanol, fully grinding the raw materials until the raw materials are uniformly mixed, drying the mixed raw materials in an oven, transferring the dried mixed raw materials into a crucible, putting the crucible into a muffle furnace, heating the crucible in a gradient manner, sintering the raw materials in an air atmosphere, cooling the sintered raw materials to room temperature, and grinding the product to obtain the product.
3. The method of claim 1, wherein the starting materials are: one or more of rare earth oxide, rare earth carbonate, rare earth nitrate and rare earth oxalate; one or more of alkaline earth metal carbonate, alkaline earth metal bicarbonate and alkaline earth metal phosphate; germanium dioxide.
4. The method according to claim 1, wherein the milling time is 20 to 40 min; the temperature of the oven is 100 ℃; the temperature rise rate of the muffle furnace is 5-10 ℃/min, the sintering temperature is 1200-1300 ℃, and the sintering time is 3-20 h.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115725295A (en) * | 2021-08-30 | 2023-03-03 | 兰州大学 | Yellow-green fluorescent powder and preparation method thereof |
| CN115785955A (en) * | 2022-12-09 | 2023-03-14 | 山东省科学院新材料研究所 | Bi 3+ Ion-doped full-spectrum white light fluorescent material and preparation and application thereof |
| CN116023942A (en) * | 2022-09-20 | 2023-04-28 | 宝鸡文理学院 | Visual mechanical sensing material based on mechanoluminescence intensity ratio and preparation method thereof |
| CN116120927A (en) * | 2022-12-27 | 2023-05-16 | 中山大学 | Bi (Bi) 3+ Cyan-doped fluorescent powder and preparation method and application thereof |
| CN116814260A (en) * | 2023-06-19 | 2023-09-29 | 昆明学院 | Magnesium calcium germanate fluorescent powder and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006098305A1 (en) * | 2005-03-15 | 2006-09-21 | Sumitomo Chemical Company, Limited | Phosphor |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006098305A1 (en) * | 2005-03-15 | 2006-09-21 | Sumitomo Chemical Company, Limited | Phosphor |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115725295A (en) * | 2021-08-30 | 2023-03-03 | 兰州大学 | Yellow-green fluorescent powder and preparation method thereof |
| CN116023942A (en) * | 2022-09-20 | 2023-04-28 | 宝鸡文理学院 | Visual mechanical sensing material based on mechanoluminescence intensity ratio and preparation method thereof |
| CN116023942B (en) * | 2022-09-20 | 2023-11-10 | 宝鸡文理学院 | Visual mechanical sensing material based on mechanoluminescence intensity ratio and preparation method thereof |
| CN115785955A (en) * | 2022-12-09 | 2023-03-14 | 山东省科学院新材料研究所 | Bi 3+ Ion-doped full-spectrum white light fluorescent material and preparation and application thereof |
| CN115785955B (en) * | 2022-12-09 | 2024-01-05 | 山东省科学院新材料研究所 | Bi (Bi) 3+ Ion doped full spectrum white light fluorescent material and preparation and application thereof |
| CN116120927A (en) * | 2022-12-27 | 2023-05-16 | 中山大学 | Bi (Bi) 3+ Cyan-doped fluorescent powder and preparation method and application thereof |
| CN116120927B (en) * | 2022-12-27 | 2024-03-15 | 中山大学 | Bi (Bi) 3+ Cyan-doped fluorescent powder and preparation method and application thereof |
| CN116814260A (en) * | 2023-06-19 | 2023-09-29 | 昆明学院 | Magnesium calcium germanate fluorescent powder and preparation method thereof |
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