CN108707456A - A kind of preparation method of red light fluorescent powder - Google Patents
A kind of preparation method of red light fluorescent powder Download PDFInfo
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- CN108707456A CN108707456A CN201810484872.8A CN201810484872A CN108707456A CN 108707456 A CN108707456 A CN 108707456A CN 201810484872 A CN201810484872 A CN 201810484872A CN 108707456 A CN108707456 A CN 108707456A
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- fluorescent powder
- red light
- light fluorescent
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- 239000000843 powder Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000001354 calcination Methods 0.000 claims abstract description 19
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 17
- 230000001376 precipitating effect Effects 0.000 claims abstract description 17
- 238000003756 stirring Methods 0.000 claims abstract description 17
- 239000000126 substance Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000008367 deionised water Substances 0.000 claims abstract description 9
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 9
- 159000000007 calcium salts Chemical class 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims abstract description 8
- 229910001940 europium oxide Inorganic materials 0.000 claims abstract 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 abstract description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002253 acid Substances 0.000 claims abstract description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 14
- 230000005284 excitation Effects 0.000 claims description 10
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 8
- 229910017604 nitric acid Inorganic materials 0.000 claims description 8
- 238000000295 emission spectrum Methods 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- 238000004020 luminiscence type Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 2
- 239000001110 calcium chloride Substances 0.000 claims description 2
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 16
- 239000000047 product Substances 0.000 description 15
- 239000003814 drug Substances 0.000 description 7
- RSEIMSPAXMNYFJ-UHFFFAOYSA-N europium(III) oxide Inorganic materials O=[Eu]O[Eu]=O RSEIMSPAXMNYFJ-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000695 excitation spectrum Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 238000003836 solid-state method Methods 0.000 description 2
- 229910000951 Aluminide Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- ULGYAEQHFNJYML-UHFFFAOYSA-N [AlH3].[Ca] Chemical compound [AlH3].[Ca] ULGYAEQHFNJYML-UHFFFAOYSA-N 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- -1 rare-earth ion Chemical class 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
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- 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
- C09K11/67—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing refractory metals
- C09K11/671—Chalcogenides
- C09K11/673—Chalcogenides with alkaline earth metals
-
- 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
- C09K11/7729—Chalcogenides
- C09K11/7731—Chalcogenides with alkaline earth metals
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Luminescent Compositions (AREA)
Abstract
The present invention relates to a kind of preparation methods of red light fluorescent powder, belong to luminescent material technical field, chemical formula CaTi3O7:xMn4+, wherein 0.01≤x≤0.1；The specific steps are：Calcium salt, titanium oxide, europium oxide and the smooth trioleate of sorb are weighed by the stoichiometric ratio of each element in chemical formula；Prepare precipitant solution；Europium oxide is dissolved with concentrated acid, water bath processing is carried out after adding suitable deionized water；The smooth trioleate of calcium salt, titanium oxide, sorb is added, is persistently uniformly mixed, precipitating reagent is added dropwise, adjusts pH, continues stirring 1-4 hours；It directly dries, obtains presoma；Presoma is placed in air atmosphere stove in calcining 2-7h to get required fluorescent powder, product luminous intensity is high, stablizes, suitable for LED red light fluorescent powders.
Description
Technical field
The present invention relates to a kind of preparation methods of red light fluorescent powder, belong to luminescent material technical field.
Background technology
LED (light emitting diode) is a kind of novel luminescent device, at low-voltage DC (2.5~16V)
Driving under, emit ultraviolet/black light or visible light.White light LEDs are that the one kind that developed based on traditional LED is emitted white light
Novel LED illuminating device, compared with traditional lighting source have energy-saving and environmental protection, long lifespan, low consumption, low-heat, high brightness,
The advantages that waterproof, shockproof, light beam concentration, easy maintenance, it is known as forth generation green illumination light source, is had to energy conservation and environmental protection important
Meaning.
Realize that the method for white light LEDs is that blue light for InGaN chip excitation YAG fluorescent powder generates yellow light at present, with chip blue light
It is mixed into white light.Since YAG fluorescent powder emission spectrum lacks red color light component, there are colour rendering indexs it is low, colour temperature is high the defects of.At present
In the prior art, the model of the Chinese Academy of Sciences is gorgeous big et al. discloses a kind of aluminium calcium titanate solid-solution type red fluorescence powder patent（Shen
It please 104861969 A of publication number CN）, but product matrix is complicated, organic solvent uses more in preparation method；Fujian agricultural
Wu Yi Ping of university et al. discloses a kind of patent of near ultraviolet excitated red fluorescence powder and its preparation method and application（Application
106010520 A of publication number CN）, prepared by product uses high temperature solid-state method, and impurity is more, can not prepare uniform particle size product；Jiangsu
The Luo Xuefang et al. of Luo Hua new materials Co., Ltd discloses a kind of double-perovskite red fluorescence powder and preparation method thereof patent（Shen
It please 107541210 A of publication number CN）, it is complicated that there is also product matrix, and prepared by product uses high temperature solid-state method, and impurity is more, can not
The problems such as preparing uniform particle size product.To solve the above problems, generally using the InGaN pipes of near ultraviolet (350~420nm) radiation
Core (UVLED) excites three primary colors fluorescent powder to realize white light LEDs.This method can select launch wavelength more fully fluorescent powder dialogue
The photochromic of light LED is prepared so that the colour rendering index of white light LEDs, colour temperature are effectively improved.Near ultraviolet white light LEDs are with glimmering
Light powder type is various, and wherein aluminium, silicates fluorescent powder are commonplace, especially rare-earth ion activated alkaline earth metal aluminide, silicon
Hydrochlorate has good thermal stability and chemical stability, and excitation spectrum is wider, can be by ultraviolet, near ultraviolet, blue light excitation simultaneously
Be presented higher luminous efficiency, launch wavelength covers larger range, and launch wavelength coverage area relative to YAG fluorescent powder more
It easily adjusts, but titanate substrate fluorescent powder is also fewer, there is very much development prospect.
Therefore, research and development New LED is likely to solve the pass of present White light LED technology problem with red light fluorescent powder
Key has broad application prospects.
Invention content
In order to solve the problems, such as it is above-mentioned propose in the prior art, the present invention provides chemical expression in one be CaTi3O7:
xMn4+, wherein 0.01≤x≤0.1, the fluorescent powder under the excitation of 270-500nm black lights emission peak near 612nm,
Improve luminescent properties by adjusting luminescence center density, the preparation side of the red light fluorescent powder suitable near ultraviolet excited white light LED
Method.
The object of the present invention is achieved like this：
The chemical expression of a kind of preparation method of red light fluorescent powder, red light fluorescent powder is CaTi3O7:xMn4+, wherein 0.01≤
X≤0.1, steps are as follows for specific preparation method：
（1）According to chemical formula CaTi3O7:xMn4+Middle each element stoichiometric ratio weighs calcium salt, titanium oxide, europium oxide respectively, then
The smooth trioleate of sorb of the above medicine gross mass 0.2wt%-1wt% is weighed respectively；
（2）Prepare precipitant solution, a concentration of 1-3mol/L；
（3）The suitable concentrated acid of the europium oxide weighed is dissolved, be added after suitable deionized water be heated to 35 DEG C~80 DEG C into
Row water bath processing；
（4）Above-mentioned solution is added in the calcium salt weighed, titanium oxide, the smooth trioleate of sorb, stirs simultaneously, precipitating reagent is added dropwise,
Until solution PH >=7, continue stirring 1-4 hours, until reaction fully carries out；
（5）Above-mentioned solution is directly dried, fluffy presoma is obtained；
（6）Presoma is placed in air atmosphere stove and is calcined, calcination temperature is 1000~1300 DEG C, and calcination time is 2~7 small
When to get to target product.
Step（1）The calcium salt is Ca (NO3)2·4H2O、CaCl2Or CaCO3In one kind.
In the present invention, step（2）Described in precipitating reagent be NH4HCO3In one kind.
In the present invention, step（3）Described in concentrated acid be analytically pure nitric acid or hydrochloric acid.
Product granularity prepared by the present invention is uniform, and average grain diameter is at 10-80 μm.
Product produced by the present invention, luminous efficiency height, stable luminescence, under near ultraviolet excitation, Emission Spectrum Peals position
Near 612nm.
Positive beneficial effect：1, the fluorescent powder excitation spectrum that the present invention prepares is very wide, under near ultraviolet excitation, transmitting
Spectrum peak is located near 612nm, and luminous intensity is big, is suitable for the red light fluorescent powder of near ultraviolet LED excitation；2, prepared by the present invention
The fluorescent powder gone out is calcined obtain at a lower temperature, primary calcining just complete matrix generate, doping, the time is short, save the energy,
Raw material is cheap and easy to get, it is simple for process, be easy to industrialized production.
Description of the drawings
Fig. 1 is the XRD spectrum of the red fluorescence powder of Examples 1 and 2；
Fig. 2 is the transmitting collection of illustrative plates of red fluorescence powder.
Specific implementation mode
With reference to specific embodiment, the present invention is described further：
Embodiment 1：
By chemical formula CaTi3O7:0.01Mn4+Weigh CaCO3(A.R.)0.99mol、TiO2 3mol、Eu2O3(99.99%)
0.005mol；The smooth trioleate of sorb of the above medicine gross mass 0.8wt% is weighed again；Prepare precipitating reagent NH4HCO3Solution, concentration
For 1mol/L；The Eu that will be weighed2O3It is dissolved with suitable nitric acid, 35 DEG C of progress water-baths is heated to after suitable deionized water is added
Processing；CaCO is added into above-mentioned solution3、TiO2, the smooth trioleate of sorb, stir simultaneously, be added dropwise precipitating reagent, adjust pH=8, after
Continuous stirring 2 hours；It directly dries, obtains fluffy presoma；Presoma is placed in air atmosphere stove and is calcined, calcination temperature is
1050 DEG C, calcination time is 5 hours to get to target product.
Embodiment 2：
By chemical formula CaTi3O7:0.015Mn4+Weigh CaCO3 (A.R.)0.985mol、TiO2 3mol、Eu2O3(99.99%)
0.0075mol；The smooth trioleate of sorb of the above medicine gross mass 0.6wt% is weighed again；Prepare precipitating reagent NH4HCO3Solution is dense
Degree is 1mol/L；The Eu that will be weighed2O3It is dissolved with suitable nitric acid, 45 DEG C of progress water is heated to after suitable deionized water is added
Bath is handled；CaCO is added into above-mentioned solution3、TiO2, the smooth trioleate of sorb, stir simultaneously, be added dropwise precipitating reagent, adjust pH=8,
Continue stirring 2 hours；It directly dries, obtains fluffy presoma；Presoma is placed in air atmosphere stove and is calcined, calcination temperature
It it is 1300 DEG C, calcination time is 3 hours to get to target product.
Embodiment 3
By chemical formula CaTi3O7:0.02Mn4+Weigh CaCO3 (A.R.)0.98mol、TiO2 3mol、Eu2O3(99.99%)
0.01mol；The smooth trioleate of sorb of the above medicine gross mass 0.6wt% is weighed again；Prepare precipitating reagent NH4HCO3Solution, concentration
For 1mol/L；The Eu that will be weighed2O3It is dissolved with suitable nitric acid, 55 DEG C of progress water-baths is heated to after suitable deionized water is added
Processing；CaCO is added into above-mentioned solution3、TiO2, the smooth trioleate of sorb, stir simultaneously, be added dropwise precipitating reagent, adjust pH=8, after
Continuous stirring 2 hours；It directly dries, obtains fluffy presoma；Presoma is placed in air atmosphere stove and is calcined, calcination temperature is
1100 DEG C, calcination time is 4 hours to get to target product.
Embodiment 4
By chemical formula CaTi3O7:0.05Mn4+Weigh CaCO3 (A.R.)0.95mol、TiO2 3mol、Eu2O3(99.99%)
0.025mol；The smooth trioleate of sorb of 1 wt% of the above medicine gross mass is weighed again；Prepare precipitating reagent NH4HCO3Solution, concentration
For 1mol/L；The Eu that will be weighed2O3It is dissolved with suitable nitric acid, 60 DEG C of progress water-baths is heated to after suitable deionized water is added
Processing；CaCO is added into above-mentioned solution3、TiO2, the smooth trioleate of sorb, stir simultaneously, be added dropwise precipitating reagent, adjust pH=8, after
Continuous stirring 2 hours；It directly dries, obtains fluffy presoma；Presoma is placed in air atmosphere stove and is calcined, calcination temperature is
1150 DEG C, calcination time is 5 hours to get to target product.
Embodiment 5
By chemical formula CaTi3O7:0.08Mn4+Weigh CaCO3 (A.R.)0.92mol、TiO2 3mol、Eu2O3(99.99%)
0.04mol；The smooth trioleate of sorb of 0.8 wt% of the above medicine gross mass is weighed again；Prepare precipitating reagent NH4HCO3Solution, concentration
For 1mol/L；The Eu that will be weighed2O3It is dissolved with suitable nitric acid, 65 DEG C of progress water-baths is heated to after suitable deionized water is added
Processing；CaCO is added into above-mentioned solution3、TiO2, the smooth trioleate of sorb, stir simultaneously, be added dropwise precipitating reagent, adjust pH=8, after
Continuous stirring 2 hours；It directly dries, obtains fluffy presoma；Presoma is placed in air atmosphere stove and is calcined, calcination temperature is
1200 DEG C, calcination time is 6 hours to get to target product.
Embodiment 6
By chemical formula CaTi3O7:0.1Mn4+Weigh CaCO3 (A.R.)0.92mol、TiO2 3mol、Eu2O3(99.99%)
0.05mol；The smooth trioleate of sorb of the above medicine gross mass 0.6wt% is weighed again；Prepare precipitating reagent NH4HCO3Solution, concentration
For 1mol/L；The Eu that will be weighed2O3It is dissolved with suitable nitric acid, 75 DEG C of progress water-baths is heated to after suitable deionized water is added
Processing；CaCO is added into above-mentioned solution3、TiO2, the smooth trioleate of sorb, stir simultaneously, be added dropwise precipitating reagent, adjust pH=8, after
Continuous stirring 2 hours；It directly dries, obtains fluffy presoma；Presoma is placed in air atmosphere stove and is calcined, calcination temperature is
1250 DEG C, calcination time is 6.5 hours to get to target product.
Product granularity prepared by the present invention is uniform, and average grain diameter is at 10-80 μm；Product produced by the present invention, luminous efficiency
High, stable luminescence, under near ultraviolet excitation, Emission Spectrum Peals are located near 612nm；The fluorescent powder that the present invention prepares swashs
Luminous spectrum is very wide, and under near ultraviolet excitation, Emission Spectrum Peals are located near 612nm, and luminous intensity is big, is suitable near ultraviolet
The red light fluorescent powder of LED excitations；The fluorescent powder that the present invention prepares is calcined obtain at a lower temperature, and primary calcining is just completed
Matrix is generated, is adulterated, and the time is short, it is cheap and easy to get, simple for process to save the energy, raw material, is easy to industrialized production.
The above case study on implementation is merely to illustrate the preferred embodiment of the present invention, but the present invention is not limited to above-mentioned embodiment party
Formula, the field those of ordinary skill within the scope of knowledge, within the spirit and principles in the present invention made by it is any
Modification, equivalent substitute and improvement etc., are regarded as the protection domain of the application.
Claims (6)
1. a kind of preparation method of red light fluorescent powder, it is characterised in that：The chemical expression of red light fluorescent powder is CaTi3O7:xMn4 +, wherein 0.01≤x≤0.1 is as follows：
（1）According to each element stoichiometric ratio in chemical formula, calcium salt, titanium oxide, europium oxide are weighed respectively, then are weighed respectively above
The smooth trioleate of sorb of raw material gross mass 0.2wt%-1wt%；
（2）Prepare precipitant solution, a concentration of 1-3mol/L；
（3）The suitable concentrated acid of the europium oxide weighed is dissolved, be added after suitable deionized water be heated to 35 DEG C~80 DEG C into
Row water bath processing；
（4）Above-mentioned solution is added in the calcium salt weighed, titanium oxide, the smooth trioleate of sorb, stirs simultaneously, precipitating reagent is added dropwise,
Until pH value of solution >=7, continue stirring 1-4 hours, until reaction fully carries out；
（5）Above-mentioned solution is directly dried, fluffy presoma is obtained；
（6）Presoma is placed in air atmosphere stove and is calcined, calcination temperature is 1000-1300 DEG C, and calcination time is 2-7 hours,
Obtain target product.
2. a kind of preparation method of red light fluorescent powder according to claim 1, it is characterised in that：It is characterized in that, step
（1）The calcium salt is Ca (NO3)2·4H2O、CaCl2Or CaCO3In one kind.
3. a kind of preparation method of red light fluorescent powder according to claim 1, it is characterised in that：Step（2）Described in
Precipitating reagent is NH4HCO3。
4. a kind of preparation method of red light fluorescent powder according to claim 1, it is characterised in that：Step（3）Described in it is dense
Acid is analytically pure nitric acid or hydrochloric acid.
5. a kind of preparation method of red light fluorescent powder according to claim 1, it is characterised in that：Step（6）Obtained mesh
Mark product particle size is uniform, and average grain diameter is at 10-80 μm.
6. a kind of preparation method of red light fluorescent powder according to claim 1, it is characterised in that：Step（6）Obtained mesh
Product luminous efficiency height, stable luminescence are marked, under near ultraviolet excitation, Emission Spectrum Peals are located near 612nm.
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| CN201810484872.8A CN108707456B (en) | 2018-05-20 | 2018-05-20 | Preparation method of red-light fluorescent powder |
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| CN201810484872.8A CN108707456B (en) | 2018-05-20 | 2018-05-20 | Preparation method of red-light fluorescent powder |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0993865A2 (en) * | 1998-10-09 | 2000-04-19 | Basf Aktiengesellschaft | Basic catalyst based on titanates, zirconates and hafnates |
| CN101775287A (en) * | 2009-11-13 | 2010-07-14 | 东华大学 | CaTiO3:Eu<3+> fluorescent powder and preparation method thereof |
| CN104861969A (en) * | 2015-05-20 | 2015-08-26 | 中国科学院新疆理化技术研究所 | Aluminum calcium titanate solid-solution type red phosphor and preparation method thereof |
| CN107641510A (en) * | 2017-11-13 | 2018-01-30 | 河北紫旭节能环保技术咨询有限公司 | A kind of red fluorescence powder and preparation method thereof |
-
2018
- 2018-05-20 CN CN201810484872.8A patent/CN108707456B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0993865A2 (en) * | 1998-10-09 | 2000-04-19 | Basf Aktiengesellschaft | Basic catalyst based on titanates, zirconates and hafnates |
| CN101775287A (en) * | 2009-11-13 | 2010-07-14 | 东华大学 | CaTiO3:Eu<3+> fluorescent powder and preparation method thereof |
| CN104861969A (en) * | 2015-05-20 | 2015-08-26 | 中国科学院新疆理化技术研究所 | Aluminum calcium titanate solid-solution type red phosphor and preparation method thereof |
| CN107641510A (en) * | 2017-11-13 | 2018-01-30 | 河北紫旭节能环保技术咨询有限公司 | A kind of red fluorescence powder and preparation method thereof |
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