CN110003910B - A Eu3+ activated bismuth fluorotelluride red phosphor and its preparation method and application - Google Patents
A Eu3+ activated bismuth fluorotelluride red phosphor and its preparation method and application Download PDFInfo
- Publication number
- CN110003910B CN110003910B CN201910344171.9A CN201910344171A CN110003910B CN 110003910 B CN110003910 B CN 110003910B CN 201910344171 A CN201910344171 A CN 201910344171A CN 110003910 B CN110003910 B CN 110003910B
- Authority
- CN
- China
- Prior art keywords
- fluorescent powder
- bismuth
- red fluorescent
- fluorotellurate
- activated
- 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.)
- Active
Links
Images
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
- C09K11/88—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing selenium, tellurium or unspecified chalcogen elements
- C09K11/881—Chalcogenides
- C09K11/886—Chalcogenides with rare earth metals
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
本发明公开了一种Eu3+激活的氟碲酸铋红色荧光粉及其制备方法与应用，该荧光粉的化学式为Bi1‑xEuxTe3O7F，其中x为Eu3+取代Bi3+的摩尔比，且0.001≤x≤0.1；以硝酸铋、氟化铵、氧化碲和氟化铕为原料，采用固相烧结法制备得到。本发明提供的荧光粉在近紫外光370～410纳米激发下，发射出明亮的红光，发光的最强波长在615纳米；制备方法简单，烧结温度低，可用于以近紫外光为激发源的各种照明、显示和光致发光色度调节。
The invention discloses an Eu 3+ activated bismuth fluorotelluride red fluorescent powder and a preparation method and application thereof. The chemical formula of the fluorescent powder is Bi 1-x Eu x Te 3 O 7 F, wherein x is substituted by Eu 3+ Molar ratio of Bi 3+ , and 0.001≤x≤0.1; prepared by solid-phase sintering method using bismuth nitrate, ammonium fluoride, tellurium oxide and europium fluoride as raw materials. The fluorescent powder provided by the invention emits bright red light under the excitation of near-ultraviolet light of 370-410 nanometers, and the strongest wavelength of luminescence is 615 nanometers; the preparation method is simple, the sintering temperature is low, and can be used for near-ultraviolet light as the excitation source. Various lighting, display and photoluminescence chromaticity adjustment.
Description
Technical Field
The invention relates to an inorganic luminescent material, in particular to Eu3+Activated bismuth fluorotellurate red fluorescent powder and a preparation method and application thereof, belonging to the technical field of luminescent materials and display.
Background
In the development of rare earth functional materials, rare earth luminescent materials are particularly attractive. Rare earth has spectral properties incomparable with common elements due to the special electronic layer structure, and the rare earth luminescence almost covers the whole solid luminescence range, so long as the luminescence is mentioned, the rare earth can hardly be distinguished. The rare earth luminescent material is generated by transition of rare earth ion 4f electrons between different energy levels, and has strong absorption capacity. The rare earth material can emit electromagnetic spectrum from ultraviolet to infrared by a plurality of different excitation modes, has high conversion efficiency and particularly has strong emission capability in a visible light region. Rare earth luminescent materials have been widely used in various fields such as display, new light sources, X-ray intensifying screens, etc.
Among rare earth ions, trivalent europium ion Eu3+Plays an extremely important role in rare earth luminescence. Eu (Eu)3+Ions having a unique 4f6Electronic configuration, narrow luminous spectral line, high color purity, bright color, strong light absorption capacity and high conversion efficiency, and is an indispensable red color-developing ion, and in addition, Eu is used3+The fluorescence spectrum structure of the ion can be used to detect the crystallographic environment of the substituted cation in the matrix lattice. In recent years, there have been a considerable number of reportsPay attention to Eu3+The ion activated red fluorescent powder has stable physical and chemical properties, is high temperature resistant, can bear the effects of high-power electron beams, high-energy radiation and strong ultraviolet light, and becomes a main research object for searching high and new technical materials in the fields of illumination, display, development, medical radiation images, detection and recording of radiation fields and the like.
At present, the commercial red fluorescent powder for the LED is mainly Y2O2S:Eu3+The red fluorescent powder is a thio compound, and sulfide is required to be used as a raw material in the preparation process of the red fluorescent powder, and the red fluorescent powder is required to be calcined in a protective atmosphere or a reducing atmosphere so as to prevent the sulfur from reacting with oxygen in the air, so that the preparation method is very complicated; the sulfide system has low efficiency, poor chemical stability and easy generation of H2The S gas corrodes the LED chip.
Disclosure of Invention
An object of the present invention is to provide a Eu3+The activated bismuth fluorotellurate red fluorescent powder has high crystallinity, obvious luminous efficiency and high color purity.
Another object of the present invention is to provide the above Eu3+The preparation method of the activated bismuth fluorotellurate red fluorescent powder has the advantages of simple steps, good repeatability and environment-friendly process.
Another object of the present invention is to provide the above Eu3+Application of the activated bismuth fluorotellurate red fluorescent powder.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: eu (Eu)3+The chemical formula of the activated bismuth fluorotellurate red fluorescent powder is Bi1-xEuxTe3O7F, wherein x is Eu3+Substituted Bi3+And x is more than or equal to 0.001 and less than or equal to 0.1; the matrix is bismuth fluorotellurate BiTe3O7F, europium ion Eu3+For activating ions, Eu3+Bi substituted in the crystal lattice3+。
The invention also provides the Eu3+The preparation method of the activated bismuth fluorotellurate red fluorescent powder adopts a solid-phase sintering method and comprises the following specific steps:
(1) with bismuth nitrate Bi (NO)3)3·5H2O、Ammonium fluoride NH4F. Tellurium oxide TeO2And europium fluoride EuF3As raw material, firstly according to the chemical formula Bi1-xEuxTe3O7F, x is more than or equal to 0.001 and less than or equal to 0.1, the molar ratio of Bi, Eu and Te is measured, and bismuth nitrate Bi (NO) is respectively weighed3)3·5H2O, europium fluoride EuF3And tellurium oxide TeO2Then according to bismuth nitrate Bi (NO)3)3·5H2Weighing ammonium fluoride NH with the molar weight of 1.5-2 times of that of O4F；
(2) Adding bismuth nitrate Bi (NO)3)3·5H2O and ammonium fluoride NH4Dissolving F in ethylene glycol respectively, stirring and mixing, adjusting the pH to 6-7, stirring at room temperature for 3-5 hours, standing for precipitation, filtering, washing, drying the precipitate, and calcining at 400 ℃ for 2-5 hours in an air atmosphere;
(3) the calcined substance obtained in the step (2) and tellurium oxide TeO2Europium fluoride EuF3Mixing, grinding uniformly, pressing the obtained mixture into blocks, calcining in air atmosphere at 550-600 ℃ for 3-8 hours, naturally cooling, and grinding uniformly to obtain Eu3+Activated bismuth fluorotellurate red fluorescent powder.
Preferably, the pH is adjusted in step (2) by using an ammonia-water-ethanol mixed solution in a volume ratio of 1: 9.
The invention also provides the Eu3+Application of the activated bismuth fluorotellurate red fluorescent powder.
Under the excitation of near ultraviolet light, the Eu3+The ion activated fluorotellurate-based red fluorescent powder emits red fluorescent light, and can be applied to illumination, display and photoluminescence chromaticity adjustment with near ultraviolet light as excitation source
Compared with the prior art, the invention has the following beneficial effects:
1. eu according to the invention3+The ion-activated bismuth fluorotellurate red fluorescent powder can emit red fluorescent light with main wavelength of 615 nanometers under the excitation of near ultraviolet light of 370-410 nanometers, and has pure chromaticity and remarkable luminous efficiency;
2. the red fluorescent powder containing fluorine has rich raw material sources, simple preparation method, easy operation and low requirement on equipment; the product is easy to collect, has no waste water and gas emission, and is environment-friendly;
3. eu provided by the invention3+The preparation method of the ion-activated bismuth fluorotellurate red fluorescent powder has the advantages that the sintering temperature is low (550-600 ℃), the production cost is low, and the prepared red fluorescent powder has good thermal stability and uniform granularity.
Drawings
FIG. 1 shows Bi of a sample prepared in example 1 of the present invention0.95Eu0.05Te3O7X-ray powder diffraction pattern of F.
FIG. 2 shows Bi of a sample prepared in example 1 of the present invention0.95Eu0.05Te3O7Scanning Electron Micrograph (SEM) of F.
FIG. 3 shows Bi of a sample prepared in example 1 of the present invention0.95Eu0.05Te3O7F excitation spectrum obtained under 615 nm monitoring.
FIG. 4 shows Bi of a sample prepared in example 1 of the present invention0.95Eu0.05Te3O7F, luminescence spectrum obtained under 395 nm wavelength excitation.
FIG. 5 shows Bi of a sample prepared according to the embodiment of the present invention0.97Eu0.03Te3O7X-ray powder diffraction pattern in F.
FIG. 6 shows Bi of a sample prepared in example 3 of the present invention0.97Eu0.03Te3O7Scanning Electron Micrograph (SEM) of F.
FIG. 7 shows Bi of a sample prepared in example 3 of the present invention0.97Eu0.03Te3O7F excitation spectrum obtained under 615 nm monitoring.
FIG. 8 shows Bi of a sample prepared in example 3 of the present invention0.97Eu0.03Te3O7F, luminescence spectrum obtained under 395 nm wavelength excitation.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
Example 1
According to the chemical formula Bi0.95Eu0.05Te3O7The molar ratios of Bi, Eu and Te in F are respectively weighed to obtain bismuth nitrate Bi (NO)3)3·5H2O: 4.608 g of europium fluoride EuF3: 0.1045 g of tellurium oxide TeO2: 4.788 g. Weighing ammonium fluoride NH4F: 0.53 g. First, Bi (NO) is added3)3·5H2O and NH4Dissolving F in ethylene glycol respectively, stirring and mixing, adjusting the pH value to 6 by using an ammonia water-ethanol mixed solution (ammonia water: ethanol is 1:9 in volume ratio), fully stirring for 5 hours at room temperature, standing for full precipitation, filtering, washing the precipitate by using distilled water, drying, and calcining for 5 hours at 400 ℃ in an air atmosphere. Then the calcined substance and europium fluoride EuF3Tellurium oxide TeO2Grinding and mixing uniformly, pressing the obtained mixture into blocks, calcining in air atmosphere at 600 ℃ for 3 hours, naturally cooling, and grinding uniformly to obtain Eu3+Ion activated bismuth fluorotellurate red fluorescent powder.
Referring to the attached FIG. 1, a sample Bi prepared according to the technical scheme of example 10.95Eu0.05Te3O7F, and the test result shows that the prepared sample is a single phase and has better crystallinity.
Referring to the attached figure 2, which is an electron scanning electron microscope image of the sample prepared in example 1, it can be seen that the sample has smooth surface, uniform crystallization and no obvious agglomeration.
Referring to FIG. 3, which is a graph of the excitation spectrum of 615 nm sample prepared in example 1, it can be seen that the excitation source of red luminescence is mainly 395 nm, and the near-UV excited fluorescent lamp can be prepared well.
Referring to FIG. 4, it is a luminescence spectrum of 395 nm wavelength excitation of the sample prepared in example 1, and the main luminescence center of the material is in 615 nm red luminescence band.
Example 2
According to the chemical formula Bi0.93Eu0.07Te3O7The molar ratios of Bi, Eu and Te in F are respectively weighed to obtain bismuth nitrate Bi (NO)3)3·5H2O: 4.511 g of europium fluoride EuF3: 0.1463 g of tellurium oxide TeO2: 4.788 g. Weighing ammonium fluoride NH4F: 0.689 g. First, Bi (NO) is added3)3·5H2O and NH4Dissolving F in ethylene glycol, stirring and mixing, adjusting the pH value to 7 by using an ammonia water-ethanol mixed solution (ammonia water: ethanol is 1:9 in volume ratio), fully stirring for 3 hours at room temperature, standing for full precipitation, filtering, washing the precipitate by using distilled water, drying, and calcining for 2 hours at 400 ℃ in an air atmosphere. Then the calcined substance and europium fluoride EuF3Tellurium oxide TeO2Grinding and mixing uniformly, pressing the obtained mixture into blocks and calcining the blocks in air atmosphere at the calcining temperature of 550 ℃ for 8 hours, naturally cooling and grinding uniformly to obtain Eu3+Ion activated bismuth fluorotellurate red fluorescent powder.
The phase composition, excitation spectrum and luminescence spectrum were similar to those of example 1.
Example 3
According to the chemical formula Bi0.97Eu0.03Te3O7The molar ratios of Bi, Eu and Te in F are respectively weighed to obtain bismuth nitrate Bi (NO)3)3·5H2O: 3.9198 g of europium fluoride EuF3: 0.0622 g of tellurium oxide TeO2: 3.99 g. Weighing ammonium fluoride NH4F: 0.54 g. First, Bi (NO) is added3)3·5H2O and NH4Dissolving F in ethylene glycol, stirring and mixing, adjusting the pH value to 6.5 by using an ammonia water-ethanol mixed solution (ammonia water: ethanol is 1:9 in volume ratio), fully stirring for 4 hours at room temperature, standing for full precipitation, filtering, washing the precipitate by using distilled water, drying, and calcining for 4 hours at 400 ℃ in an air atmosphere. Then the calcined substance and europium fluoride EuF3Tellurium oxide TeO2Grinding and mixing uniformly, pressing the obtained mixture into a block, calcining the block in air atmosphere at 550 ℃ for 6 hours, naturally cooling, and grinding uniformly to obtain Eu3+Ion activated bismuth fluorotellurate red fluorescent powder.
Referring to FIG. 5, a sample Bi prepared according to the technical scheme of example 30.97Eu0.03Te3O7And the X-ray powder diffraction pattern in the F shows that the prepared sample is a single phase and has good crystallinity.
Referring to the attached FIG. 6, it is the scanning electron microscope image of the sample prepared in example 3, and it can be seen that the sample has smooth surface, uniform crystallization, and no obvious agglomeration.
Referring to FIG. 7, which is a graph of the excitation spectrum obtained by monitoring 615 nm of the sample prepared in example 3, it can be seen that the excitation source of the red luminescence of the material is mainly 395 nm, and the near ultraviolet light excitation fluorescent lamp can be well prepared.
Referring to FIG. 8, it is the luminescence spectrum of 395 nm wavelength excitation of the sample prepared in example 3, and the main luminescence center of the material is in 615 nm red luminescence band.
Example 4
According to the chemical formula Bi0.9Eu0.1Te3O7The molar ratios of Bi, Eu and Te in F are respectively weighed to obtain bismuth nitrate Bi (NO)3)3·5H2O: 2.91 g of europium fluoride EuF3: 0.14 g of tellurium oxide TeO2: 3.2 g. Weighing ammonium fluoride NH4F: 0.36 g. First, Bi (NO) is added3)3·5H2O and NH4And F is respectively dissolved in ethylene glycol, stirred and mixed, the pH value is adjusted to 6.3, the mixture is fully stirred for 5 hours at room temperature, the mixture is fully settled, filtered, washed by distilled water and calcined for 4 hours at 400 ℃ in the air atmosphere after being dried. Then the calcined substance and europium fluoride EuF3Tellurium oxide TeO2Grinding and mixing uniformly, pressing the obtained mixture into blocks and calcining in air atmosphere at the calcining temperature of 580 ℃ for 5 hours, naturally cooling and grinding uniformly to obtain Eu3+Ion activated bismuth fluorotellurate red fluorescent powder.
The phase composition, excitation spectrum and luminescence spectrum were similar to those of example 3.
Example 5
According to the chemical formula Bi0.999Eu0.001Te3O7The molar ratio of Bi, Eu and Te in F, bismuth nitrate Bi (NO) is weighed respectively3)3·5H2O: 4.846 g of europium fluoride EuF3: 0.02 g of tellurium oxide TeO2: 4.788 g. Weighing ammonium fluoride NH4F: 0.56 g. First, Bi (NO) is mixed3)3·5H2O and NH4And F is respectively dissolved in ethylene glycol, stirred and mixed, the pH value is adjusted to 6.5, the mixture is fully stirred for 4 hours at room temperature, the mixture is fully settled, filtered, washed by distilled water and calcined for 5 hours at 400 ℃ in the air atmosphere after being dried. Then the calcined substance and europium fluoride EuF3Tellurium oxide TeO2Grinding and mixing uniformly, pressing the obtained mixture into blocks and calcining in air atmosphere at 570 ℃ for 6 hours, naturally cooling and grinding uniformly to obtain Eu3+Ion activated bismuth fluorotellurate red fluorescent powder.
The phase composition, excitation spectrum and luminescence spectrum were similar to those of example 3.
Claims (4)
1. Eu (Eu)3+The activated bismuth fluorotellurate red fluorescent powder is characterized in that the chemical formula is Bi1-xEuxTe3O7F, wherein x is Eu3+Substituted Bi3+And x is more than or equal to 0.001 and less than or equal to 0.1.
2. Eu according to claim 13+The preparation method of the activated bismuth fluorotellurate red fluorescent powder is characterized by adopting a solid-phase sintering method and comprising the following specific steps of:
(1) with bismuth nitrate Bi (NO)3)3·5H2O, ammonium fluoride NH4F. Tellurium oxide TeO2And europium fluoride EuF3As raw material, firstly according to the chemical formula Bi1-xEuxTe3O7F, x is more than or equal to 0.001 and less than or equal to 0.1, the molar ratio of Bi, Eu and Te is measured, and bismuth nitrate Bi (NO) is respectively weighed3)3·5H2O, europium fluoride EuF3And tellurium oxide TeO2Then according to bismuth nitrate Bi (NO)3)3·5H2Weighing ammonium fluoride NH with the molar weight of 1.5-2 times of that of O4F；
(2) Adding bismuth nitrate Bi (NO)3)3·5H2O and ammonium fluoride NH4Dissolving F in ethylene glycol respectively, stirring and mixing, adjusting the pH to 6-7, stirring at room temperature for 3-5 hours, standing for precipitation, filtering, washing, drying the precipitate, and calcining at 400 ℃ for 2-5 hours in an air atmosphere;
(3) the calcined substance obtained in the step (2) and tellurium oxide TeO2Europium fluoride EuF3Mixing, grinding uniformly, pressing the obtained mixture into blocks, calcining in air atmosphere at 550-600 ℃ for 3-8 hours, naturally cooling, and grinding uniformly to obtain Eu3+Activated bismuth fluorotellurate red fluorescent powder.
3. Eu according to claim 23+The preparation method of the activated bismuth fluorotellurate red fluorescent powder is characterized in that ammonia water and ethanol mixed solution with the volume ratio of 1:9 is adopted for adjusting the pH in the step (2).
4. Eu according to claim 13+The application of the activated bismuth fluorotellurate red fluorescent powder is characterized in that the red fluorescent powder is applied to illumination, display and photoluminescence chromaticity adjustment with near ultraviolet light as an excitation source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910344171.9A CN110003910B (en) | 2019-04-26 | 2019-04-26 | A Eu3+ activated bismuth fluorotelluride red phosphor and its preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910344171.9A CN110003910B (en) | 2019-04-26 | 2019-04-26 | A Eu3+ activated bismuth fluorotelluride red phosphor and its preparation method and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110003910A CN110003910A (en) | 2019-07-12 |
| CN110003910B true CN110003910B (en) | 2021-04-23 |
Family
ID=67174418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910344171.9A Active CN110003910B (en) | 2019-04-26 | 2019-04-26 | A Eu3+ activated bismuth fluorotelluride red phosphor and its preparation method and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110003910B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108587627A (en) * | 2018-06-01 | 2018-09-28 | 苏州大学张家港工业技术研究院 | Eu3+Ion-activated fluorine chlorine telluric acid bismuth and its preparation method and application |
| CN109046395A (en) * | 2018-08-30 | 2018-12-21 | 南通纺织丝绸产业技术研究院 | A kind of telluric acid bismuth/bismuth oxide heterojunction material, preparation method and applications |
-
2019
- 2019-04-26 CN CN201910344171.9A patent/CN110003910B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108587627A (en) * | 2018-06-01 | 2018-09-28 | 苏州大学张家港工业技术研究院 | Eu3+Ion-activated fluorine chlorine telluric acid bismuth and its preparation method and application |
| CN109046395A (en) * | 2018-08-30 | 2018-12-21 | 南通纺织丝绸产业技术研究院 | A kind of telluric acid bismuth/bismuth oxide heterojunction material, preparation method and applications |
Non-Patent Citations (2)
| Title |
|---|
| Er~(3+)掺杂碲酸盐微晶玻璃光纤的中红外荧光特性;康世亮等;《硅酸盐学报》;20180802(第10期);1321-1326 * |
| 热处理对掺Er~(3+)碲酸盐玻璃近红外发光性能的影响;郑健等;《光电子·激光》;20151015(第10期);1924-1930 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110003910A (en) | 2019-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4362625B2 (en) | Method for manufacturing phosphor | |
| Liu et al. | Enhancement of luminescence properties of Zn (W–Mo) O4: Eu3+ red phosphors by co-doped charge compensators A+ (Li+, Na+, K+) | |
| Li et al. | A novel red-emitting Ca2GdHf2Al3O12: Eu3+ phosphor for light-emitting didoes and field emission display | |
| CN112126433B (en) | Aluminosilicate fluorescent material capable of emitting green light | |
| CN112940723A (en) | Bi3+、Eu3+Ion co-activated lutecium salt fluorescent powder and preparation method thereof | |
| CN101798510A (en) | Nitride phosphor material and preparation method thereof | |
| CN109988575B (en) | A kind of Eu3+ ion-activated vanadium phosphoniobate red phosphor, preparation method and application thereof | |
| CN102352244B (en) | LED red fluorescent material and its preparation method | |
| CN106635017A (en) | Titanate-based red fluorescent powder and preparation method thereof | |
| CN112608742B (en) | Europium-activated beta-Al 2O3 defect structure blue fluorescent powder and preparation method thereof | |
| CN106544022A (en) | A kind of Eu3+ doped tantalate red phosphor, preparation method and application | |
| Pawade et al. | Blue emission in Eu2+ activated MgXAl10O17 (X= Sr, Ca) phosphors | |
| Xianghong et al. | Luminescent properties and application of Eu3+-activated Gd2 (MoO4) 3 red-emitting phosphor with pseudo-pompon shape for solid-state lighting | |
| CN112625683A (en) | Germanate type red fluorescent powder and preparation method thereof | |
| CN109233826B (en) | A kind of europium ion activated titanium aluminate phosphor and its preparation method and application | |
| CN112266784A (en) | CsCdCl with broadband blue light emission3:xSb3+Single crystal and method for producing the same | |
| CN108822842B (en) | Red strontium magnesium phosphate fluorescent material and preparation method and application thereof | |
| CN108587627B (en) | Eu3+Ion-activated bismuth fluorochlorotelluroate and preparation method and application thereof | |
| CN110003910B (en) | A Eu3+ activated bismuth fluorotelluride red phosphor and its preparation method and application | |
| CN108893108A (en) | A kind of double-perovskite type silicate blue fluorescent powder and preparation method thereof | |
| Li et al. | Preparation and Properties of Sr3B2O6: Dy3+, Eu3+ White Phosphors Using the High-Temperature Solid-State Method | |
| CN112480918A (en) | Manganese-doped deep red light fluorescent powder material and preparation method thereof | |
| KR100387659B1 (en) | Manufacturing method of strontium aluminate phosphor by the sol-gel method | |
| CN105586037B (en) | A kind of potassium tungstate red fluorescence powder and preparation method | |
| CN116875307B (en) | A tetravalent manganese ion activated titanate-based red luminescent material 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20190712 Assignee: Xuzhou zhuosen Biotechnology Co.,Ltd. Assignor: Jiangsu Normal University Contract record no.: X2022980021018 Denomination of invention: A Eu3+activated bismuth fluotellurite red phosphor and its preparation method and application Granted publication date: 20210423 License type: Common License Record date: 20221111 |
|
| EC01 | Cancellation of recordation of patent licensing contract | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Xuzhou zhuosen Biotechnology Co.,Ltd. Assignor: Jiangsu Normal University Contract record no.: X2022980021018 Date of cancellation: 20230625 |