CN108913141B - Eu3+Ion-activated fluorescent material, preparation and application thereof - Google Patents

Eu3+Ion-activated fluorescent material, preparation and application thereof Download PDF

Info

Publication number
CN108913141B
CN108913141B CN201810874909.8A CN201810874909A CN108913141B CN 108913141 B CN108913141 B CN 108913141B CN 201810874909 A CN201810874909 A CN 201810874909A CN 108913141 B CN108913141 B CN 108913141B
Authority
CN
China
Prior art keywords
ion
fluorescent material
chloride
activated fluorescent
light
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
Application number
CN201810874909.8A
Other languages
Chinese (zh)
Other versions
CN108913141A (en
Inventor
黄彦林
刘宣宣
秦杰
米龙庆
魏东磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhangjiagang Industrial Technology Research Institute Of Suzhou University
Suzhou University
Original Assignee
Zhangjiagang Industrial Technology Research Institute Of Suzhou University
Suzhou University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhangjiagang Industrial Technology Research Institute Of Suzhou University, Suzhou University filed Critical Zhangjiagang Industrial Technology Research Institute Of Suzhou University
Priority to CN201810874909.8A priority Critical patent/CN108913141B/en
Priority to PCT/CN2018/099497 priority patent/WO2020024318A1/en
Publication of CN108913141A publication Critical patent/CN108913141A/en
Application granted granted Critical
Publication of CN108913141B publication Critical patent/CN108913141B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
    • C09K11/779—Halogenides
    • C09K11/7791—Halogenides with alkali or alkaline earth metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 with at least one potential-jump barrier or surface barrier 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

Abstract

The invention relates to Eu3+An ion-activated fluorescent material of the formula LaGd1‑xEuxYTiO4Cl5Wherein x is more than or equal to 0.001 and less than or equal to 1.0, and the Eu3+The ion-activated fluorescent material emits red fluorescence under the excitation of ultraviolet and/or near-ultraviolet light. The invention adopts a high-temperature solid phase method to obtain pure-phase red fluorescent powder with excellent luminous performance, has strong excitation efficiency in ultraviolet and near ultraviolet light, is very consistent with the emission wavelength of a near ultraviolet LED chip, and emits light with a sharp spectrum mainly comprising 615 nanometer red light.

Description

Eu3+Ion-activated fluorescent material, preparation and application thereof
Technical Field
The invention relates to the field of inorganic luminescent devices, in particular to Eu3+An ion-activated fluorescent material, its preparation and use.
Background
In the research and development process of lighting materials, the rare earth ion activated fluorescent powder plays an important role in the fields of lighting and display and is an indispensable basic material; especially in recent years, rare earth ion activated phosphors have played an important role in solid state lighting products based on white light emitting diodes.
Compared with the traditional fluorescent lamp and other light sources, the new generation of illumination light source white light emitting diode which is rapidly developed has the advantages of environmental protection, low power consumption, safety and high brightness. The mainstream commercial white light LED lighting device at present is composed of an InGaN blue light semiconductor chip and a yellow Y3Al5O12:Ce3+(YAG:Ce3+) Fluorescent lampThe combined use of light and powder, however, the lighting device has insufficient red light emission in the visible light region, and thus has high Correlated Color Temperature (CCT)>4500K) And a color rendering index difference (Ra < 80), which largely limits its application in the field of illumination. In addition, in the current LED lighting appliance, a device prepared by using red, green and blue three-primary-color fluorescent powder is also provided, and the device requires that the fluorescent powder has good excitation at near ultraviolet wavelength (350-420 nanometers). The LED device prepared by the method has higher CRI value and better color stability, so that the search for a red light-emitting device with higher luminous efficiency and good thermal stability is particularly important for a lighting device excited by a near ultraviolet LED.
Rare earth ion, Eu, as the most important activator of red luminescence3+Characteristic emission of (A) is derived from5D0,1,2-7FJ(J-4.., 0). Eu (Eu)3+Has a broad absorption and emission spectrum because Eu3+The 5d level of the Eu is sensitive to the crystal field and the covalency, which makes it possible to accommodate Eu by finding a suitable complex oxide3+A fluorescent powder with special color is designed.
Disclosure of Invention
To solve the above technical problems, the present invention provides a Eu3+The material has strong excitation efficiency, pure chromaticity, high luminous efficiency and thermal stability, and simple preparation method.
In one aspect, the present invention provides Eu3+An ion-activated fluorescent material of the formula LaGd1- xEuxYTiO4Cl5Wherein x is more than or equal to 0.001 and less than or equal to 1.0, and the Eu3+The ion-activated fluorescent material emits red fluorescence under the excitation of ultraviolet and/or near-ultraviolet light. Wherein x represents Eu3+Substituted yttrium Y3+The number of moles of ions.
Preferably, Eu3+The chemical formula of the ion-activated fluorescent material is LaGd0.55Eu0.45YTiO4Cl5、 LaGd0.999Eu0.001YTiO4Cl5、LaEuYTiO4Cl5、LaGd0.7Eu0.3YTiO4Cl5、LaGd0.4Eu0.6YTiO4Cl5Or LaGd0.2Eu0.8YTiO4Cl5。
Further, the wavelength of the ultraviolet and/or near-ultraviolet light is 200-500 nm.
Further, the wavelength of the red fluorescence is 570-720nm (preferably, the wavelength of the red fluorescence is 610-620 nm). The fluorescent material of the invention emits red sharp spectrum with dominant wavelength of 615nm under the excitation of ultraviolet and/or near ultraviolet light.
In another aspect, the present invention also discloses the above Eu3+The application of the ion-activated fluorescent material in the preparation of a light-emitting device, wherein an excitation source of the light-emitting device is ultraviolet and/or near ultraviolet light.
Further, the light emitting device is a light emitting diode, a display material, a three primary color fluorescent lamp, or a field emission display. The material can be used as a fluorescent material of an illuminating or displaying device which takes ultraviolet and/or near-ultraviolet light as an excitation light source.
In another aspect, the present invention also provides a Eu as described above3+The preparation method of the ion activated fluorescent material adopts a high-temperature solid phase method, and comprises the following steps:
at a molar ratio of 0.001-0.999:1:1:0.001-0.999:1, Gd is added3+Ionic compound containing La3 +Chlorides of ions, containing Y3+Chloride of ion, containing Eu3+Ionic compound containing Ti4+The ionic compounds are uniformly mixed and then calcined in the air atmosphere, the calcination temperature is 1200-1400 ℃, the calcination time is 1-10 hours, and Eu is obtained3+An ion-activated fluorescent material; or
At a molar ratio of 1:1:1:1, La is added3+Chlorides of ions, containing Y3+Chloride of ion, containing Eu3+Ionic compound containing Ti4+The ionic compounds are mixed uniformly and then calcined in an air atmosphereThe calcination temperature is 1200-1400 ℃, the calcination time is 1-10 hours, and Eu is obtained3+An ion activated fluorescent material.
Preferably, containing Gd3+Ionic compound containing La3+Chlorides of ions, containing Y3+Chloride of ion, containing Eu3+Ionic compound containing Ti4+The ionic compound molar ratio is 0.2-0.999:1:1:0.001-0.8: 1.
Further, containing La3+The chloride of the ion is lanthanum chloride (LaCl)3) Containing Y3+The chloride of the ion being yttrium chloride (YCl)3)。
Further, contains Gd3+The ionic compound is gadolinium oxide (Gd)2O3) Gadolinium nitrate (Gd (NO)3)3·6H2O) or gadolinium chloride (GaCl)3)。
Further, containing Eu3+The ionic compound is europium oxide (Eu)2O3) Or europium nitrate (Eu (NO)3)3·6H2O)。
Further, contains Ti4+The ionic compound being titanium dioxide (TiO)2)。
Furthermore, a grinding method is adopted, the mixture is evenly mixed and dried, the grinding method is a wet grinding method, and the used auxiliary agent is an organic solvent.
Further, before calcining, the method also comprises the step of briquetting the mixture.
Preferably, the calcination temperature is 1250-.
By the scheme, the invention at least has the following advantages:
1. the invention provides a rare earth ion-containing LaGd1-xEuxYTiO4Cl5A matrix material realizes Eu3+Doped and efficient luminescent, rare earth cations have very good acceptance of Eu3+The doping characteristic of the ions, three rare earth ions with different properties are contained in the matrix, La, Gd and Y occupy the same crystallographic position, the lattice position of the cation has sufficient disturbance, and the Eu is realized3+The forbidden transition of ions is broken completely, red luminescence with pure chromaticity is obtained, and the luminous efficiency is good.
2. LaGd of the invention1-xEuxYTiO4Cl5The fluorescent material has a substrate lattice which is composed of octahedron composed of anions O, Cl and Ti, the lattice rigidity is larger than that of an oxide lattice, and the fluorescent material has good thermal stability and is potential novel fluorescent powder.
3. With conventional red phosphors, e.g. Y2O2S:Eu3+,Y2O3:Eu3+Compared with the prior art, the red fluorescent material with pure phase and excellent luminous performance is obtained by adopting a high-temperature solid phase method, has strong excitation efficiency under ultraviolet and/or near ultraviolet light, has the radiation wavelength of a near ultraviolet LED chip in the region, and is more suitable for preparing white light LED lighting equipment according to the near ultraviolet LED chip.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 shows LaGd prepared in example 1 of the present invention0.55Eu0.45YTiO4Cl5X-ray powder diffraction pattern of (a);
FIG. 2 shows LaGd prepared in example 1 of the present invention0.55Eu0.45YTiO4Cl5Electron scanning electron micrographs of (a);
FIG. 3 shows LaGd prepared in example 1 of the present invention0.55Eu0.45YTiO4Cl5Excitation spectrum under 615nm light monitoring;
FIG. 4 shows LaGd prepared in example 1 of the present invention0.55Eu0.45YTiO4Cl5A luminescence spectrum under 395nm light excitation;
FIG. 5 shows LaGd prepared in example 1 of the present invention0.55Eu0.45YTiO4Cl5The luminescence decay curve of (1).
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1:
this example provides a Eu3+The chemical formula of the ion activated fluorescent powder is LaGd0.55Eu0.45YTiO4Cl5. According to the stoichiometric ratio of each cation element in the chemical formula, respectively weighing lanthanum chloride LaCl32.45 g of gadolinium chloride GdCl3: 2.636 g, europium oxide Eu2O3: 0.792 g yttrium chloride YCl3: 1.95 g, titanium dioxide TiO2: 0.8 g. The above Eu was prepared according to the following method3+Ion-activated phosphor:
wet grinding the weighed raw materials by using acetone as a grinding aid, drying, and pressing the obtained mixture into blocks. Calcining the obtained pressed block in air atmosphere at 1250 ℃ for 6 hours to obtain Eu3+Ion activated fluorescent powder LaGd0.55Eu0.45YTiO4Cl5。
FIG. 1 is an X-ray powder diffraction pattern of the product, and XRD test results show that the prepared material is a single-phase material and has no impurity phase.
FIG. 2 is an SEM image of the product, and FIG. 2 shows that the material has good crystallization property and uniform particle size.
FIG. 3 is the excitation spectrum obtained from the above product under the condition of 615nm of monitoring emission, from which it can be seen that the excitation source of red emission is mainly in the UV-to-blue region between 200 nm and 500nm, which can be well matched with the excitation of the UV-to-blue LED chip.
FIG. 4 is a graph of the luminescence spectrum of the product obtained by near ultraviolet 395nm excitation, and it can be seen that the material mainly has red luminescence with a central luminescence wavelength of 615 nm.
FIG. 5 is the luminescence decay curve of 615nm of the above product, from which it can be seen that the material has a luminescence lifetime of 0.98 ms, which is suitable for luminescent lighting applications.
Example 2:
this example provides a Eu3+The chemical formula of the ion activated fluorescent powder is LaGd0.999Eu0.001YTiO4Cl5. According to the stoichiometric ratio of each cation element in the chemical formula, respectively weighing lanthanum chloride LaCl37.35 g of gadolinium oxide Gd2O3: 5.437 g, europium nitrate Eu (NO)3)3·6H2O: 0.0134 g of yttrium chloride YCl3: 5.85 g, titanium dioxide TiO2: 2.401 g. The above Eu was prepared according to the following method3+Ion-activated phosphor:
wet grinding the weighed raw materials in an agate mortar by using acetone as a grinding aid, drying, and pressing the obtained mixture into blocks. Calcining the obtained pressed block in air atmosphere at 1350 ℃ for 4 hours to obtain Eu3+Ion activated fluorescent powder LaGd0.999Eu0.001YTiO4Cl5. The main structural properties, excitation spectrum and luminescence spectrum are similar to those of example 1.
Example 3:
this example provides a Eu3+An ion activated phosphor having the chemical formula LaEuYTiO4Cl5. According to the stoichiometric ratio of each cation element in the chemical formula, respectively weighing lanthanum chloride LaCl34.9 g, europium oxide Eu2O3: 3.52 g, yttrium chloride YCl3: 3.9 g, titanium dioxide TiO2: 1.6 g. The above Eu was prepared according to the following method3+Ion-activated phosphor:
wet grinding the weighed raw materials by using acetone as a grinding aid, drying, and pressing the obtained mixture into blocks. Calcining the obtained pressed block in air atmosphere at 1400 ℃ for 1 hour to obtain Eu3+Ion activated fluorescent powder LaEuYTiO4Cl5. The main structural properties, excitation spectrum and luminescence spectrum are similar to those of example 1.
Example 4:
this example provides a Eu3+The chemical formula of the ion activated fluorescent powder is LaGd0.7Eu0.3YTiO4Cl5. According to the stoichiometric ratio of each cation element in the chemical formula, respectively weighing lanthanum chloride LaCl33.675 g, gadolinium nitrate Gd (NO)3)3·6H2O: 3.602 g, europium nitrate Eu (NO)3)3·6H2O: 2.007 g of yttrium chloride YCl3: 2.925 g of titanium dioxide TiO2: 1.2 g. The above Eu was prepared according to the following method3+Ion-activated phosphor:
wet grinding the weighed raw materials in an agate mortar by using acetone as a grinding aid, drying, and pressing the obtained mixture into blocks. Calcining the obtained pressed block in air atmosphere at 1200 ℃ for 10 hours to obtain Eu3+Ion activated fluorescent powder LaEuYTiO4Cl5. The main structural properties, excitation spectrum and luminescence spectrum are similar to those of example 1.
Example 5:
this example provides a Eu3+The chemical formula of the ion activated fluorescent powder is LaGd0.4Eu0.6YTiO4Cl5. According to the stoichiometric ratio of each cation element in the chemical formula, weighing: lanthanum chloride LaCl33.063 g of gadolinium chloride GdCl3: 1.318 g, europium nitrate Eu (NO)3)3·6H2O: 1.673 g, yttrium chloride YCl3: 2.437 g of titanium dioxide TiO2:1 gram. The above Eu was prepared according to the following method3+Ion-activated phosphor:
wet grinding the weighed raw materials in an agate mortar by using acetone as a grinding aid, drying, and pressing the obtained mixture into blocks. Calcining the obtained pressed block in air atmosphere at 1300 ℃ for 7 hours to obtain Eu3+Ion activated fluorescent powder LaGd0.4Eu0.6YTiO4Cl5. Its main structural performance, excitation spectrum and luminous lightThe spectra were similar to example 1.
Example 6:
this example provides a Eu3+The chemical formula of the ion activated fluorescent powder is LaGd0.2Eu0.8YTiO4Cl5. According to the stoichiometric ratio of each cation element in the chemical formula, weighing: lanthanum chloride LaCl32.695 g, gadolinium oxide Gd2O3: 0.398 g, europium oxide Eu2O3: 1.55 g, yttrium chloride YCl3: 2.145 g, titanium dioxide TiO2: 0.88 g. The above Eu was prepared according to the following method3+Ion-activated phosphor:
wet grinding the weighed raw materials in an agate mortar by using acetone as a grinding aid, drying, and pressing the obtained mixture into blocks. Calcining the obtained pressed block in air atmosphere at 1230 ℃ for 8 hours to obtain Eu3+Ion activated fluorescent powder LaGd0.2Eu0.8YTiO4Cl5. The main structural properties, excitation spectrum and luminescence spectrum are similar to those of example 1.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (10)

1. Eu (Eu)3+An ion activated fluorescent material characterized by: the chemical formula is LaGd x1-Eu x YTiO4Cl5Wherein 0.001 is less than or equal toxLess than or equal to 1.0, the Eu3+The ion-activated fluorescent material emits red fluorescence under the excitation of ultraviolet light.
2. Eu according to claim 13+An ion activated fluorescent material characterized by: the wavelength of the ultraviolet light is 200-500 nm.
3. Eu according to claim 13+An ion activated fluorescent material characterized by: the wavelength of the red fluorescence is 570-720 nm.
4. The Eu of any one of claims 1 to 33+The application of the ion-activated fluorescent material in the preparation of a light-emitting device, wherein an excitation source of the light-emitting device is ultraviolet light.
5. Use according to claim 4, characterized in that: the light emitting device is a light emitting diode, a three primary color fluorescent lamp or a field emission display.
6. Eu according to any one of claims 1 to 33+The preparation method of the ion activated fluorescent material is characterized by comprising the following steps:
at a molar ratio of 0-0.999: 1:1: 0.001-1: 1, Gd is added3+Ionic compound containing La3+Chlorides of ions, containing Y3+Chloride of ion, containing Eu3+Ionic compound containing Ti4+Uniformly mixing ionic compounds, and then calcining the mixture in an air atmosphere at the calcining temperature of 1200-1400 ℃ to obtain the Eu3+An ion activated fluorescent material.
7. The method of claim 6, wherein: the compound contains Gd3+The ionic compound is gadolinium oxide, gadolinium nitrate or gadolinium chloride.
8. The method of claim 6, wherein: said La containing3+The chloride of the ion is lanthanum chloride, and the chloride contains Y3+The chloride of the ion is yttrium chloride.
9. The method of claim 6, wherein: said Eu being contained3+The ionic compound is europium oxide or europium nitrate.
10. The method of claim 6, wherein: said Ti-containing4+The ionic compound is titanium dioxide.
CN201810874909.8A 2018-08-01 2018-08-01 Eu3+Ion-activated fluorescent material, preparation and application thereof Active CN108913141B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201810874909.8A CN108913141B (en) 2018-08-01 2018-08-01 Eu3+Ion-activated fluorescent material, preparation and application thereof
PCT/CN2018/099497 WO2020024318A1 (en) 2018-08-01 2018-08-09 Eu3+ ion activated fluorescent material, preparation and use thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810874909.8A CN108913141B (en) 2018-08-01 2018-08-01 Eu3+Ion-activated fluorescent material, preparation and application thereof

Publications (2)

Publication Number Publication Date
CN108913141A CN108913141A (en) 2018-11-30
CN108913141B true CN108913141B (en) 2021-04-20

Family

ID=64394027

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810874909.8A Active CN108913141B (en) 2018-08-01 2018-08-01 Eu3+Ion-activated fluorescent material, preparation and application thereof

Country Status (2)

Country Link
CN (1) CN108913141B (en)
WO (1) WO2020024318A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101824320A (en) * 2010-05-19 2010-09-08 北京大学 Red fluorescent powder, preparation method and application thereof
CN102604638A (en) * 2012-01-19 2012-07-25 苏州大学 Eu<3+>-activated phosphate red phosphor powder as well as preparation method and application thereof
CN103450898A (en) * 2013-08-16 2013-12-18 陕西科技大学 Titanate base red fluorescent powder for white LED (Light Emitting Diode) and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101824320A (en) * 2010-05-19 2010-09-08 北京大学 Red fluorescent powder, preparation method and application thereof
CN102604638A (en) * 2012-01-19 2012-07-25 苏州大学 Eu<3+>-activated phosphate red phosphor powder as well as preparation method and application thereof
CN103450898A (en) * 2013-08-16 2013-12-18 陕西科技大学 Titanate base red fluorescent powder for white LED (Light Emitting Diode) and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Darstellung und Struktur von Ln3TiO4CI5(Ln = La-Nd) -;N. HUBNER等;《Z. anorg. allg. Chem》;19901231;第591卷;第107-117页 *

Also Published As

Publication number Publication date
WO2020024318A1 (en) 2020-02-06
CN108913141A (en) 2018-11-30

Similar Documents

Publication Publication Date Title
Chiu et al. Ca 2 PO 4 Cl: Eu2+: an intense near-ultraviolet converting blue phosphor for white light-emitting diodes
Hakeem et al. Structural and photoluminescence properties of La1-xNaCaGa3PZrO12 doped with Ce3+, Eu3+, and Tb3+
Wang et al. Synthesis, crystal structure, and photoluminescence of a novel blue-green emitting phosphor: BaHfSi 3 O 9: Eu 2+
CN103627392B (en) A kind of stibnate base red fluorescent powder and its preparation method and application
CN109777404B (en) Europium ion Eu3+Activated aluminate red fluorescent powder and preparation method thereof
CN113249125B (en) Ce 3+ Doped silicate-based green fluorescent powder and preparation method and application thereof
CN105694886A (en) Eu (Eu)2+Preparation method and application of doped fluosilicate-based luminescent material
Zhen et al. Luminescence properties of Sr2MgB2O6: Tb3+, Li+ green-emitting phosphor
Han et al. NaKLaNbO5: Eu3+: A highly efficient and thermally stable orange-red emitting phosphor for white light-emitting diodes
CN106635017B (en) Titanate-based red fluorescent powder and preparation method thereof
CN106544022B (en) A kind of Eu3+Tantalates red fluorescence powder, the Preparation method and use of doping
CN114395393A (en) Eu (Eu)3+Doped red fluorescent powder and preparation method thereof
CN107629794B (en) Europium ion Eu3+Activated bismuth-based luminescent material, preparation method and application
CN107603622B (en) Vanadate luminescent material and preparation method thereof
CN109957403B (en) Eu (Eu)3+Activated barium strontium fluoborate red fluorescent powder and preparation and application thereof
Xiong et al. Novel red emitting LnTaO4: Eu3+ (Ln= La, Y) phosphors for warm white LEDs
CN110003901B (en) Eu (Eu)3+And Ti4+Ion-codoped niobium tantalate red fluorescent powder, and preparation method and application thereof
CN108587627B (en) Eu3+Ion-activated bismuth fluorochlorotelluroate and preparation method and application thereof
CN103396800B (en) Boron aluminate-based blue fluorescent powder, preparation method and application
CN108913141B (en) Eu3+Ion-activated fluorescent material, preparation and application thereof
CN110184055B (en) Eu (Eu)3+Activated niobium tantalate red luminescent phosphor and preparation and application thereof
CN109825296B (en) Europium ion Eu3+Activated fluorine antimonate orange red fluorescent powder and preparation method thereof
CN109957397B (en) Tb3+ activated barium strontium fluoborate green fluorescent powder and preparation and application thereof
CN110129047B (en) Tb3+Activated niobium tantalate green luminescent fluorescent powder and preparation and application thereof
CN110079316B (en) Eu (Eu)3+Doped fluoroniobium tantalate fluorescent powder and synthesis and application 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