CN114702956A - Mn (manganese)4+Activated deep red fluorescent powder and preparation method and application thereof - Google Patents
Mn (manganese)4+Activated deep red fluorescent powder and preparation method and application thereof Download PDFInfo
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- 239000000843 powder Substances 0.000 title claims abstract description 38
- MCSXGCZMEPXKIW-UHFFFAOYSA-N 3-hydroxy-4-[(4-methyl-2-nitrophenyl)diazenyl]-N-(3-nitrophenyl)naphthalene-2-carboxamide Chemical class Cc1ccc(N=Nc2c(O)c(cc3ccccc23)C(=O)Nc2cccc(c2)[N+]([O-])=O)c(c1)[N+]([O-])=O MCSXGCZMEPXKIW-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000011572 manganese Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 21
- 230000005284 excitation Effects 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims description 40
- 238000001354 calcination Methods 0.000 claims description 24
- 239000010955 niobium Substances 0.000 claims description 23
- 238000000227 grinding Methods 0.000 claims description 14
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 8
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 claims description 4
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims description 2
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 238000003746 solid phase reaction Methods 0.000 claims description 2
- 238000005286 illumination Methods 0.000 abstract description 5
- 239000011159 matrix material Substances 0.000 abstract description 4
- 230000004913 activation Effects 0.000 abstract description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract 1
- 150000001768 cations Chemical class 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 238000010532 solid phase synthesis reaction Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 14
- 238000004020 luminiscence type Methods 0.000 description 9
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 238000005424 photoluminescence Methods 0.000 description 4
- 238000000634 powder X-ray diffraction Methods 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000000695 excitation spectrum Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 239000012856 weighed raw material Substances 0.000 description 2
- 229910009112 xH2O Inorganic materials 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229910020440 K2SiF6 Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000295 emission spectrum Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 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
- C09K11/67—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing refractory metals
- C09K11/68—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing refractory metals containing chromium, molybdenum or tungsten
- C09K11/681—Chalcogenides
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- 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
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Abstract
Mn (manganese)4+The activated deep red fluorescent powder and the preparation method and the application thereof have the chemical formula: k is2NaTa0.5Nb2.5‑ 2.5xMn2.5xW2O15Wherein x is Mn4+Doped Nb5+The molar ratio of x is more than or equal to 0.005 and less than or equal to 0.05. The matrix material of the invention is K2NaTa0.5Nb2.5W2O15The cations in the matrix lattice all have complex mixed occupation, Mn4+Doped in Nb5+The lattice position of (2) enables the activation center to be highly disturbed, and the light emission with high quantum efficiency is realized; the fluorescent powder shows effective excitation in a near ultraviolet-blue light wave band, emits deep red fluorescent light with the wavelength of 600-750 nanometers and the main peak of 655 nanometers under the excitation of the near ultraviolet-blue light wave band, and can be widely applied to light-emitting illumination and display devices. The preparation method adopts high temperatureThe solid phase method is simple and easy to implement, the raw materials are easy to obtain, and no pollution is caused.
Description
Technical Field
The invention relates to a fluorescent material and a preparation method thereof, in particular to Mn4+An activated deep red fluorescent powder, a preparation method and an application thereof, belonging to the technical field of solid luminescent materials.
Background
In recent years, solid-state white light emitting diodes have attracted attention for their low power consumption, long life, high efficiency and are increasingly replacing the applications of conventional incandescent and fluorescent lamps. With the rapid development of solid-state white light emitting diodes, the requirements for luminescent materials and illumination display performance are gradually increased. The commercial solid-state white light emitting diode is a combined YAG: Ce white light emitting diode3+Yellow phosphor and InGaN blue chip to obtain white light. However, since YAG is Ce3+The emission spectrum of the phosphor lacks a red component, resulting in the disadvantage that such a white light package device has a low color rendering index and a high color temperature. Therefore, it is necessary to use some red luminescent materials among the luminescent materials. However, most of currently available red phosphors are expensive Eu2And/or Eu3+Doped nitrides, e.g. Sr2Si5N8:Eu2+And CaAlSiN3:Eu2+Or chemically unstable (oxy) sulfides, e.g. CaS: Eu2+And Y2O2S:Eu3+And the like. Relatively cheap Mn to these red luminescent materials4+Ion activated luminescent materials are of interest.
When Mn is present4+When introduced into octahedral sites in the lattice, it produces deep red emission under excitation by blue or ultraviolet light. In particular, Mn4+The activated red fluorescent powder has low price and can replace expensive Eu2+And Eu3+Activated red phosphor. Some Mn is reported in the literature4+Activated fluoride phosphors such as K2SiF6:Mn4+Is expected to be practically applied. However, such fluoride phosphors are unstable in air, are susceptible to hydrolysis to produce HF, which is harmful to the environment, and have complicated and polluting preparation processes. In contrast to this, the present invention is,Mn4+the activated oxide fluorescent powder can stably exist in the air, has low synthesis cost and no pollution, and becomes an important object for research and development in red luminescent materials. Therefore, Mn, which is simple to prepare, environmentally friendly, economical and excellent in luminous efficiency, has been developed4+The activated fluorescent powder has practical significance to the field of luminescence.
Disclosure of Invention
One of the objects of the present invention is to provide Mn having pure chromaticity, high luminous efficiency and good thermal stability4+Activated deep red fluorescent powder, expanded Mn4+Doping other inorganic salts to prepare the application range of the fluorescent powder.
Another object of the present invention is to provide Mn as described above4+The preparation method of the activated deep red fluorescent powder is simple and easy to implement, and has easily obtained raw materials and no pollution.
Another object of the present invention is to provide a Mn-rich alloy4+Application of activated deep red fluorescent powder.
In order to achieve the above object, the present invention provides a Mn4+Activated deep red phosphor of formula K2NaTa0.5Nb2.5-2.5xMn2.5xW2O15X is Mn4+Doped Nb5+The molar ratio of x is more than or equal to 0.005 and less than or equal to 0.05.
The invention also provides Mn4+The preparation method of the activated deep red fluorescent powder adopts a high-temperature solid-phase reaction method and comprises the following steps:
(1) to contain K+Compound of (1), containing Na+Compound of (2) containing Nb5+Compound of (1), containing Ta5+Compound of (1), containing Mn4+A compound of (1), containing W6+Is a compound of the formula K2NaTa0.5Nb2.5-2.5xMn2.5xW2O15Weighing the raw materials according to the stoichiometric ratio of the corresponding elements, wherein x is Mn4+Doped Nb5+The molar ratio of the sites, and x is more than or equal to 0.005 and less than or equal to 0.05; weighing the mixture containing K+Compound (II) containing Na++Compound of (2) containing Nb5+Transformation ofCompound containing Ta5+Compound of (1), containing Mn4+A compound of (1), containing W6+The compound is fully ground in a grinder and uniformly mixed to obtain a raw material mixture;
(2) calcining the raw material mixture obtained in the step (1) for the first time in an air atmosphere at the calcining temperature of 700-900 ℃ for 1-5 h, and naturally cooling to room temperature to obtain a sintered block;
(3) grinding the block obtained in the step (2) into powder, uniformly mixing, carrying out secondary calcination in an air atmosphere at the calcination temperature of 900-1100 ℃ for 1-10 h, and naturally cooling to obtain a sintered block;
(4) grinding the blocks obtained in the step (3) into powder, uniformly mixing, calcining for the third time in an air atmosphere at the calcining temperature of 1000-1100 ℃ for 1-10 h, naturally cooling to obtain sintered blocks, and grinding the blocks into powder to obtain Mn4+Activated deep red phosphor.
Preferably, said compound contains K+The compound of (1) is potassium carbonate; said Na-containing compound+The compound of (1) is sodium carbonate; said Nb content5+The compound of (b) is niobium pentoxide; said component containing Ta5+The compound of (a) is tantalum pentoxide; said Mn being contained4 +The compound of (1) is manganese dioxide; said compound containing W6+The compound of (a) is ammonium tungstate.
The present invention also provides the above Mn4+The activated deep red fluorescent powder is applied to the preparation of warm white light/deep red light LED lighting or display devices which take near ultraviolet light and blue light semiconductor chips as excitation light sources.
Compared with the prior art, the invention has the following advantages:
(1) the matrix material of the invention is K2NaTa0.5Nb2.5W2O15Cation (Nb) in the matrix lattice5+、Ta5+) And (K)+、Na+) All have complex mixing occupation, Mn4+Doped in Nb5+The lattice position of (a), so that the activation centers are highly disturbed,greatly breaks through transition metal Mn4+The space-weighted selection rule of 3d-3d electric dipole transition realizes the light emission with high quantum efficiency;
(2) the deep red fluorescent powder prepared by the invention shows effective excitation in a near ultraviolet-blue light wave band, and accordingly, the fluorescent powder can emit deep red fluorescent light with a wavelength range of 600-750 nanometers and a main peak of 655 nanometers under the excitation of the near ultraviolet-blue light wave band, and is particularly suitable for preparing a warm white LED (light emitting diode) taking a near ultraviolet-blue light chip as an excitation light source or a pure deep red LED (light emitting diode) lighting or display device;
(3) the deep red fluorescent powder prepared by the invention can be used for luminous illumination and display, for example, the deep red fluorescent powder can be combined with yellow luminous fluorescent powder YAG, Ce and InGaN blue chips, so that the defects of high color temperature and poor color rendering index of the traditional commercial white luminous LED are overcome, and warm white light is obtained;
(4) the fluorescent powder prepared by the invention not only has lower phonon energy, high refractive index and high thermal stability, but also has excellent physical and chemical property stability, and can be applied in a humid environment;
(5) the preparation method has the advantages of simple and easy preparation process, easily obtained raw materials, low cost, no use of polluted raw materials such as hydrofluoric acid and the like in the preparation process, and economy and environmental friendliness of the raw materials.
Drawings
FIG. 1 is an X-ray powder diffraction pattern of a sample prepared in example 1 of the present invention;
FIG. 2 is a photoluminescence chart of a sample prepared in example 1 of the present invention;
FIG. 3 is a graph showing the luminescence decay curve of a sample prepared in example 1 of the present invention;
FIG. 4 is an X-ray powder diffraction pattern of a sample prepared in example 2 of the present invention;
FIG. 5 is a photoluminescence map of a sample prepared in example 2 of the present invention;
FIG. 6 is a graph showing the luminescence decay curve of a sample prepared in example 2 of the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
Example one
Preparation K2NaTa0.5Nb2.4875Mn0.0125W2O15: respectively weighing the following raw materials according to the stoichiometric ratio of elements in the chemical formula: potassium carbonate K2CO3: 5.527 g of sodium carbonate Na2CO3: 2.119 g of niobium pentoxide Nb2O5: 13.224 g of tantalum pentoxide Ta2O5: 4.4189 g, manganese oxide MnO2: 0.044 g of ammonium tungstate H40N10O41W12·xH2O: 20.287 g; placing the weighed raw materials in an agate mortar and fully grinding the raw materials to fully and uniformly mix the raw materials to obtain a raw material mixture; calcining the raw material mixture for the first time in an air atmosphere at the calcining temperature of 900 ℃ for 1h, and naturally cooling to a block sintered at room temperature; grinding the block into powder, uniformly mixing, carrying out secondary calcination in an air atmosphere, wherein the calcination temperature is 1100 ℃, the calcination time is 1h, and naturally cooling to room temperature to obtain a sintered block; grinding the blocks into powder, uniformly mixing, carrying out third calcination in air atmosphere at 1100 ℃ for 10h, naturally cooling to room temperature to obtain sintered blocks, and grinding the blocks into powder to obtain K2NaTa0.5Nb2.4Mn0.1W2O15And (4) dark red fluorescent powder.
Referring to FIG. 1, there is shown an X-ray powder diffraction pattern of the sample prepared in this example 1. The results show that K is present in the prepared material and in the database3Nb3W2O15The standard card PDF #:49-0726 is completely matched, no impurity phase appears, and the prepared material is proved to be a pure phase material and has good crystallinity.
Referring to fig. 2, which is a photoluminescence chart of the sample prepared in this example 1, monitoring the excitation spectrum at 655 nm shows that the phosphor has excitation in the uv-near uv-blue spectral range; the luminescence under excitation at 300 nm exhibits deep red luminescence with a main peak at 655 nm.
Referring to fig. 3, which is a luminescence decay curve of the sample prepared in this example 1, the calculated decay time is 0.75 ms, which can well meet the requirement of illumination without afterglow.
Example two
Preparation K2NaTa0.5Nb2.375Mn0.125W2O15: respectively weighing the following raw materials according to the stoichiometric ratio of elements in the chemical formula: potassium carbonate K2CO3: 3.454 g of sodium carbonate Na2CO3: 1.325 g of niobium pentoxide Nb2O5: 13.118 g of tantalum pentoxide Ta2O5: 1.661 g, manganese oxide MnO2: 0.272 g ammonium tungstate H40N10O41W12·xH2O: 12.68 g; placing the weighed raw materials in an agate mortar and fully grinding the raw materials to fully and uniformly mix the raw materials to obtain a raw material mixture; calcining the raw material mixture for the first time in an air atmosphere at 850 ℃ for 3h, and naturally cooling to a block sintered at room temperature; grinding the block into powder, uniformly mixing, carrying out secondary calcination in an air atmosphere, wherein the calcination temperature is 1000 ℃, the calcination time is 5 hours, and naturally cooling to room temperature to obtain a sintered block; grinding the blocks into powder, uniformly mixing, carrying out third calcination in air atmosphere at 1050 ℃ for 6h, naturally cooling to room temperature to obtain sintered blocks, and grinding the blocks into powder to obtain K2NaTa0.5Nb2.45Mn0.05W2O15And (4) dark red fluorescent powder.
Referring to fig. 4, there is shown an X-ray powder diffraction pattern of the sample prepared in example 2. The results show that K is present in the prepared material and in the database3Nb3W2O15The standard card PDF #:49-0726 is completely matched, no impurity phase appears, and the prepared material is proved to be a pure phase material and has good crystallinity.
Referring to fig. 5, which is a photoluminescence chart of the sample prepared in this example 2, monitoring the excitation spectrum at 655 nm shows that the phosphor has excitation in the uv-nir-blue spectral range; the luminescence under excitation at 300 nm exhibits deep red luminescence with a main peak at 655 nm.
Referring to fig. 6, which is a luminescence decay curve of the sample prepared in this example 2, the calculated decay time is 0.87 ms, which can meet the requirement of illumination well without afterglow.
Claims (4)
1. Mn (manganese)4+Activated deep red phosphor characterized by the chemical formula K2NaTa0.5Nb2.5-2.5xMn2.5xW2O15X is Mn4+Doped Nb5+The molar ratio of x is more than or equal to 0.005 and less than or equal to 0.05.
2. An Mn as set forth in claim 14+The preparation method of the activated deep red fluorescent powder is characterized in that a high-temperature solid-phase reaction method is adopted, and the method comprises the following steps:
(1) to contain K+Compound of (1), containing Na+Compound of (2) containing Nb5+Compound of (1), containing Ta5+Compound (2) containing Mn4+A compound of (1), containing W6+Is a compound of the formula K2NaTa0.5Nb2.5-2.5xMn2.5xW2O15Weighing the raw materials according to the stoichiometric ratio of the corresponding elements, wherein x is Mn4+Doped Nb5+The molar ratio of the sites, and x is more than or equal to 0.005 and less than or equal to 0.05; weighing the mixture containing K+Compound (II) containing Na++Compound of (2), containing Nb5+Compound of (1), containing Ta5+Compound (2) containing Mn4+A compound of (1), containing W6+The compound is fully ground in a grinder and uniformly mixed to obtain a raw material mixture;
(2) calcining the raw material mixture obtained in the step (1) for the first time in an air atmosphere at the calcining temperature of 700-900 ℃ for 1-5 h, and naturally cooling to room temperature to obtain a sintered block;
(3) grinding the block obtained in the step (2) into powder, uniformly mixing, carrying out secondary calcination in an air atmosphere, wherein the calcination temperature is 900-1100 ℃, the calcination time is 1-10 h, and naturally cooling to obtain a sintered block;
(4) grinding the blocks obtained in the step (3) into powder, uniformly mixing, calcining for the third time in an air atmosphere at the calcining temperature of 1000-1100 ℃ for 1-10 h, naturally cooling to obtain sintered blocks, and grinding the blocks into powder to obtain Mn4+Activated deep red phosphor.
3. A Mn according to claim 24+The preparation method of the activated deep red fluorescent powder is characterized in that the fluorescent powder contains K+The compound of (1) is potassium carbonate; said Na-containing compound+The compound of (b) is sodium carbonate; said Nb content5+The compound of (1) is niobium pentoxide; said containing Ta5+The compound of (a) is tantalum pentoxide; said Mn being contained4+The compound of (1) is manganese dioxide; said compound containing W6+The compound of (a) is ammonium tungstate.
4. An Mn as set forth in claim 14+The activated deep red fluorescent powder is applied to the preparation of warm white light/deep red light LED lighting or display devices which take near ultraviolet light and blue light semiconductor chips as excitation light sources.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116285980A (en) * | 2023-02-21 | 2023-06-23 | 宿州学院 | Mn (Mn) 4+ Doped dark red fluorescent powder, preparation method and application thereof |
| CN116477664A (en) * | 2023-03-25 | 2023-07-25 | 湖南有色郴州氟化学有限公司 | Mn (Mn) 4+ Ion doped dark red fluorescent powder and preparation method and application thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116285980A (en) * | 2023-02-21 | 2023-06-23 | 宿州学院 | Mn (Mn) 4+ Doped dark red fluorescent powder, preparation method and application thereof |
| CN116477664A (en) * | 2023-03-25 | 2023-07-25 | 湖南有色郴州氟化学有限公司 | Mn (Mn) 4+ Ion doped dark red fluorescent powder and preparation method and application thereof |
| CN116477664B (en) * | 2023-03-25 | 2024-04-09 | 湖南有色郴州氟化学有限公司 | Mn (Mn) 4+ Ion doped dark red fluorescent powder and preparation method and application thereof |
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