CN111363545A - Eu (Eu)3+Preparation method and application of pyrochlore-doped luminescent material - Google Patents
Eu (Eu)3+Preparation method and application of pyrochlore-doped luminescent material Download PDFInfo
- Publication number
- CN111363545A CN111363545A CN202010324071.2A CN202010324071A CN111363545A CN 111363545 A CN111363545 A CN 111363545A CN 202010324071 A CN202010324071 A CN 202010324071A CN 111363545 A CN111363545 A CN 111363545A
- Authority
- CN
- China
- Prior art keywords
- stage
- luminescent material
- sample
- preparation
- pyrochlore
- 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.)
- Pending
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
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
Eu according to the invention3+A preparation method and application of a pyrochlore-doped luminescent material belong to the technical field of preparation of fluorescent anti-counterfeiting materials. The invention provides an anti-counterfeiting material with adjustable light intensity by regulating and controlling the concentration difference of doped rare earth ions, and the molecular formula of the luminescent material is Sr2‑xEuxO7(x is more than or equal to 0.03 and less than or equal to 0.11), under the excitation of a solid laser with the wavelength of lambda being 532nm, the material can emit orange red warm light with the wavelength of 611nm, and the luminous intensity of the material is along with the rare earth ion Eu3+The concentration is increased gradually, and the possibility is provided for preparing the anti-counterfeiting trademark with gradually changed luminescence. The method adopts a high-temperature solid-phase method for synthesis, has simple manufacturing process, low equipment requirement, low cost and good sample crystallinity, is expected to be widely applied in the fields of anti-counterfeiting, optical fiber information and the like, and can quickly implement industrialization.
Description
Technical Field
The invention belongs to the research field of rare earth doped tantalate pyrochlore materials, can be applied to the technical field of preparation of fluorescent anti-counterfeiting materials, and particularly relates to Eu3+The preparation method of the pyrochlore-doped luminescent material and the application of the gradual change of the luminous intensity in anti-counterfeiting trademarks can be realized.
Background
In recent years, the technology of the present invention has been developedWith the development of advanced technologies and information science, the research of various luminescent materials has attracted general attention from various countries. Among them, the luminescent material made of rare earth doped stannate pyrochlore structure material has been widely applied to modern LED illumination, laser anti-counterfeiting and anti-counterfeiting trademarks, etc. The A-site rare earth element of pyrochlore structural material has the characteristics of electricity, magnetism, light and the like, and is known as a treasure house of new materials. Wherein the rare earth-based doped tantalate oxide semiconductor material Sr2Ta2O7The rare earth doped luminescent material has excellent photoelectric property, physical and chemical stability, ion conductivity and other properties, becomes a preferred material of a rare earth doped matrix, and is widely applied to the fields of fluorescence anti-counterfeiting, optical fiber communication, illumination and the like. In recent years, along with the development of modern economy, various counterfeit production activities become more and more serious, and attention of various enterprises is paid more and more to the anti-counterfeiting technical requirements. With the development of science and technology, luminescent materials begin to play a great role in anti-counterfeit labels and trademarks. At present for Sr2Ta2O7Studies on rare earth doping as a host have not been reported. The luminescent material prepared by the invention can emit orange red warm light with uniform color and strong light intensity and the wavelength of 611nm under the excitation of solid laser with the wavelength of lambda being 532nm, and Eu3+Ion from D0 5Transition of energy level to F2 7Energy level and with rare earth ion Eu3+The concentration is increased, the light intensity is obviously enhanced without the phenomenon of concentration quenching, and the method is expected to provide wide development space for the appearance of the gradient color anti-counterfeiting trademark.
Disclosure of Invention
The invention solves the problem of preparing Eu3+Luminescent material with doped pyrochlore structure, due to its rare earth ion Eu3 +The doping concentration and the luminous intensity of the anti-counterfeiting label are in multiple gradients, and the possibility of further technical improvement of the anti-counterfeiting label is provided.
Eu of the invention3+Doped pyrochlore structure luminescent material, Eu excited by laser with wavelength of lambda being 532nm3+Ion from D0 5Transition of energy level to F2 7Energy level, emits orange red warm light with wavelength of 611nm and uniform color, and is associated with rare earth ion Eu3+The increase in concentration increases the light intensity.
The invention provides Eu3+The preparation method of the luminescent material with the pyrochlore-doped structure comprises the following chemical formula:
Sr2-xEuxTa7(x is more than or equal to 0.03 and less than or equal to 0.11), and is characterized by comprising the following steps:
(1) the raw material is strontium carbonate powder (SrCO)3Purity 99.99%), tantalum pentoxide powder (Ta)2O5Purity 99.99%), europium oxide powder (Eu)2O3Purity 99.99%); weighing according to each molar ratio, and weighing by using an electronic scale with the accuracy of 0.0001; washing agate mortar, and adding C2H5Grinding and cleaning OH and NaCl until NaCl is recrystallized, and repeating for 2 times; the mixed sample is put into an agate mortar for soft grinding for 2 hours until the sample is uniformly mixed and is sufficiently fine (compared with a process of grinding a medicine by a ball mill, the process is not easy to introduce impurities, and the process is simple and easy to operate); weighing 1g of ground sample, putting the ground sample into a 3mm grinding tool for tabletting, controlling the pressure to be 0.2Gpa, putting the sample into a clean crucible, and covering the crucible with a cover; putting the crucible with the sample into a muffle furnace for heating, wherein the temperature rise process is set as 50-300 ℃ at 1 ℃/min at the first stage, 300-1000 ℃ at the second stage, 7 ℃/min at the third stage, 1000-1300 ℃ at the third stage, 5 ℃/min at the fourth stage, the temperature of 1300-1300 ℃ at the fourth stage is kept for 120min at the fifth stage, the temperature of 1300-900 ℃ at the fifth stage, 5 ℃/min at the fifth stage, and the sample is taken out after the temperature of the sixth stage is naturally reduced to 50 ℃; grinding the sintered sample in a clean mortar for 0.5 hour, weighing 0.3g, putting the ground sample in a 3mm grinding tool for tabletting, controlling the pressure at 0.2Gpa to obtain the required luminescent material, then putting the weighed sample in an agate mortar for full grinding, and putting the ground sample in a crucible for heating treatment.
(2) The sample in the step (1) is SrCO according to the molar ratio3:Eu2O3:Ta2O5Weighing at a ratio of 194:100: 3; then, repeating the step (1); will sampleThe product is excited by solid laser with wavelength of λ 532nm to give orange red warm light with uniform color and luster and wavelength of 611nm, and Eu3+Ion from D0 5Transition of energy level to F2 7Energy level.
(3) The sample in the step (1) is SrCO according to the molar ratio3:Eu2O3:Ta2O5Weighing at a ratio of 190:100: 5; then, repeating the step (1); putting the sample under the excitation of solid laser with the wavelength of lambda being 532nm, emitting orange red warm light with uniform color and luster and the wavelength of 611nm, Eu3+Ion from D0 5Transition of energy level to F2 7Energy level, luminous intensity is enhanced than in step (2).
(4) The sample in the step (1) is SrCO according to the molar ratio3:Eu2O3:Ta2O5Weighing at a ratio of 186:100: 7; then, repeating the step (1); putting the sample under the excitation of solid laser with the wavelength of lambda being 532nm, emitting orange red warm light with uniform color and luster and the wavelength of 611nm, Eu3+Ion from D0 5Transition of energy level to F2 7The energy level and the luminous intensity are enhanced compared with those in the step (3).
(5) The sample in the step (1) is SrCO according to the molar ratio3:Eu2O3:Ta2O5Weighing at a ratio of 182:100: 9; then, repeating the step (1); putting the sample under the excitation of solid laser with the wavelength of lambda being 532nm, emitting orange red warm light with uniform color and luster and the wavelength of 611nm, Eu3+Ion from D0 5Transition of energy level to F2 7The energy level and the luminous intensity are enhanced compared with those in the step (3).
(6) The sample in the step (1) is SrCO according to the molar ratio3:Eu2O3:Ta2O5Weighing at a ratio of 178:100: 11; then, repeating the step (1); putting the sample under the excitation of solid laser with the wavelength of lambda being 532nm, emitting orange red warm light with uniform color and luster and the wavelength of 611nm, Eu3+Ion from D0 5Transition of energy level to F2 7Energy level of hairThe light intensity is increased compared with the step (3).
The invention has the beneficial effects that:
1. the invention provides Eu3+The doped pyrochlore structure luminescent material emits orange red warm light with uniform color and luster with the wavelength of 611nm under the excitation of laser with the wavelength of a solid laser lambda being 532nm, and Eu3+Ion from D0 5Transition of energy level to F2 7Energy level, with rare earth ion Eu3+The increased concentration enhances the light intensity, and provides a wide development space for the appearance of the anti-counterfeiting trademark with the gradually changed color.
2. The invention adopts a high-temperature solid phase method for synthesis, has simple manufacturing process, is beneficial to mass industrial production, and provides wide prospect for mass production of luminescent materials in the future.
Drawings
FIG. 1 is an X-ray diffraction pattern under the conditions of examples 1-5.
FIG. 2 shows the fluorescence spectra of examples 1 to 5 under excitation by a solid laser having a wavelength of λ 532 nm.
Detailed Description
The following embodiments are all accomplished using a high temperature solid phase process.
Example 1
First, according to its chemical formula: sr2-xEuxTa7(x is more than or equal to 0.03 and less than or equal to 0.11), and the raw material is strontium carbonate powder (SrCO)3Purity 99.99%), tantalum pentoxide powder (Ta)2O5Purity 99.99%), europium oxide powder (Eu)2O3Purity 99.99%); according to the molar ratio of SrCO3:Eu2O3:Ta2O5Mixing at a ratio of 194:100:3, and weighing by using an electronic balance with the precision of 0.0001; washing agate mortar, and adding C2H5Grinding and cleaning OH and NaCl until NaCl is recrystallized, and repeating for 2 times; the mixed sample is put into an agate mortar for soft grinding for 2 hours until the sample is uniformly mixed and is sufficiently fine (compared with a process of grinding a medicine by a ball mill, the process is not easy to introduce impurities, and the process is simple and easy to operate) (ii) a Weighing 1g of ground sample, putting the ground sample into a 3mm grinding tool for tabletting, controlling the pressure to be 0.2Gpa, putting the sample into a clean crucible, and covering the crucible with a cover; putting the crucible with the sample into a muffle furnace for heating, wherein the temperature rise process is set as 50-300 ℃ at 1 ℃/min at the first stage, 300-1000 ℃ at the second stage, 7 ℃/min at the third stage, 1000-1300 ℃ at the third stage, 5 ℃/min at the fourth stage, the temperature of 1300-1300 ℃ at the fourth stage is kept for 120min at the fifth stage, the temperature of 1300-900 ℃ at the fifth stage, 5 ℃/min at the fifth stage, and the sample is taken out after the temperature of the sixth stage is naturally reduced to 50 ℃; and (3) putting the sintered sample into a clean mortar for grinding for 0.5 hour, weighing 0.3g, putting into a 3mm grinding tool for tabletting, and controlling the pressure to be 0.2Gpa to obtain the required luminescent material. The specific X-ray diffraction results are shown in fig. 1. Specifically, the fluorescence spectrum under the excitation of solid laser with the wavelength of lambda being 532nm is shown in FIG. 2.
Example 2
The basic steps of the embodiment 2 are basically the same as those of the embodiment 1, but the medicine proportioning conditions are different: SrCO3:Eu2O3:Ta2O5190:100:5, mixing, grinding, pressing, sintering, grinding and briquetting again; then, the sample is excited by solid laser with wavelength of λ 532nm to emit orange red warm light with uniform color and luster and wavelength of 611nm, Eu3+Ion from D0 5Transition of energy level to F2 7Energy level, luminous intensity, is enhanced as compared to step example 1. The specific X-ray diffraction results are shown in fig. 1. Specifically, the fluorescence spectrum under the excitation of solid laser with the wavelength of lambda being 532nm is shown in FIG. 2.
Example 3:
the basic steps of the embodiment 3 are basically the same as those of the embodiment 1, but the medicine proportioning conditions are different: SrCO3:Eu2O3:Ta2O5Mixing, grinding, pressing, sintering, grinding and briquetting again, wherein the ratio is 186:100: 7; then, the sample is excited by solid laser with wavelength of λ 532nm to emit orange red warm light with uniform color and luster and wavelength of 611nm, Eu3+Ion from D0 5Transition of energy level to F2 7Energy level, luminous intensity ratio step examples2 enhancement. The specific X-ray diffraction results are shown in fig. 1. Specifically, the fluorescence spectrum under the excitation of solid laser with the wavelength of lambda being 532nm is shown in FIG. 2.
Example 4:
the basic steps of the embodiment 4 are basically the same as those of the embodiment 1, but the medicine proportioning conditions are different:
SrCO3:Eu2O3:Ta2O5mixing, grinding, pressing, sintering, grinding and briquetting again, wherein the ratio is 182:100: 9; then, the sample is excited by solid laser with wavelength of λ 532nm to emit orange red warm light with uniform color and luster and wavelength of 611nm, Eu3+Ion from D0 5Transition of energy level to F2 7Energy level, luminous intensity, is enhanced as compared to step example 3. The specific X-ray diffraction results are shown in fig. 1. Specifically, the fluorescence spectrum under the excitation of solid laser with the wavelength of lambda being 532nm is shown in FIG. 2.
Example 5:
the basic steps of the embodiment 5 are basically the same as those of the embodiment 1, but the medicine proportioning conditions are different:
SrCO3:Eu2O3:Ta2O5178:100:11, mixing, grinding, pressing, sintering, grinding and briquetting again; then, the sample is excited by solid laser with wavelength of λ 532nm to emit orange red warm light with uniform color and luster and wavelength of 611nm, Eu3+Ion from D0 5Transition of energy level to F2 7Energy level, luminous intensity is enhanced compared to step example 4; further, the anti-counterfeiting luminescent material with gradually changed luminous intensity is obtained. The specific X-ray diffraction results are shown in fig. 1. Specifically, the fluorescence spectrum under the excitation of solid laser with the wavelength of lambda being 532nm is shown in FIG. 2.
Claims (8)
1. Eu (Eu)3+The preparation method of the luminescent material with the pyrochlore-doped structure is characterized by comprising the following steps of: molecular formula is Sr2-xEuxTa7(x is more than or equal to 0.03 and less than or equal to 0.11), and the raw material is strontium carbonate powder (SrCO)3Purity 99.99%), tantalum pentoxide powder (Ta)2O5The purity is 99.99 percent) and europium oxide powder (Eu)2O3Purity 99.99%).
2. Eu according to claim 13+The preparation method of the luminescent material with the pyrochlore-doped structure is characterized by comprising the following steps of: according to the molar ratio of SrCO3:Eu2O3:Ta2O5A ratio of 194:100:3 was weighed with an electronic scale with an accuracy of 0.0001.
3. Eu according to claim 23+The preparation method of the luminescent material with the pyrochlore-doped structure is characterized by comprising the following steps of: according to the molar ratio of SrCO3:Eu2O3:Ta2O5Weighing was performed with an electronic scale with an accuracy of 0.0001 at a ratio of 190:100: 5.
4. Eu according to claim 23+The preparation method of the luminescent material with the pyrochlore-doped structure is characterized by comprising the following steps of: according to the molar ratio of SrCO3:Eu2O3:Ta2O5Weigh at 186:100:7 ratio with an electronic scale with an accuracy of 0.0001.
5. Eu according to claim 23+The preparation method of the luminescent material with the pyrochlore-doped structure is characterized by comprising the following steps of: according to the molar ratio of SrCO3:Eu2O3:Ta2O5Weigh with an electronic scale with an accuracy of 0.0001 at a ratio of 182:100: 9.
6. Eu according to claim 23+The preparation method of the luminescent material with the pyrochlore-doped structure is characterized by comprising the following steps of: according to the molar ratio of SrCO3:Eu2O3:Ta2O5Weighing was performed with an electronic scale with an accuracy of 0.0001 at a ratio of 178:100: 11.
7. A Eu according to claims 2-63+The preparation method of the luminescent material with the pyrochlore-doped structure is characterized by comprising the following steps of:
the preparation method adopts a high-temperature solid-phase method, and comprises the steps of firstly, washing an agate mortar, and then, using C2H5Grinding and cleaning OH and NaCl until NaCl is recrystallized, and repeating for 2 times; placing the mixed sample into an agate mortar for soft grinding for 2 hours until the sample is uniformly mixed and is sufficiently fine; weighing 1g of ground sample, putting the ground sample into a 3mm grinding tool for tabletting, controlling the pressure to be 0.2Gpa, putting the sample into a clean crucible, and covering the crucible with a cover; putting the crucible with the sample into a muffle furnace for heating, wherein the temperature rise process is set as 50-300 ℃ at 1 ℃/min at the first stage, 300-1000 ℃ at the second stage, 7 ℃/min at the third stage, 1000-1300 ℃ at the third stage, 5 ℃/min at the fourth stage, the temperature of 1300-1300 ℃ at the fourth stage is kept for 120min at the fifth stage, the temperature of 1300-900 ℃ at the fifth stage, 5 ℃/min at the fifth stage, and the sample is taken out after the temperature of the sixth stage is naturally reduced to 50 ℃; and (3) putting the sintered sample into a clean mortar for grinding for 0.5 hour, weighing 0.3g, putting into a 3mm grinding tool for tabletting, and controlling the pressure to be 0.2Gpa to obtain the required luminescent material.
8. Eu manufactured according to the manufacturing method of claim 73+The application of the luminescent material with the pyrochlore-doped structure is characterized in that: when the material is applied to anti-counterfeiting trademarks, a sample emits orange red warm light with uniform color and luster and a wavelength of 611nm under the excitation of solid laser with a wavelength of lambda of 532nm, and Eu3+Ion from D0 5Transition of energy level to F2 7Energy level and with rare earth ion Eu3+The intensity of the light gradually increases with the increase in concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010324071.2A CN111363545A (en) | 2020-04-22 | 2020-04-22 | Eu (Eu)3+Preparation method and application of pyrochlore-doped luminescent material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010324071.2A CN111363545A (en) | 2020-04-22 | 2020-04-22 | Eu (Eu)3+Preparation method and application of pyrochlore-doped luminescent material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111363545A true CN111363545A (en) | 2020-07-03 |
Family
ID=71205413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010324071.2A Pending CN111363545A (en) | 2020-04-22 | 2020-04-22 | Eu (Eu)3+Preparation method and application of pyrochlore-doped luminescent material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111363545A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962542A (en) * | 2010-09-14 | 2011-02-02 | 南昌大学 | Niobate-based red fluorescent powder for white LED as well as preparation method and application thereof |
| CN102517008A (en) * | 2011-12-13 | 2012-06-27 | 广州有色金属研究院 | Alkaline earth metal pyrovanadate blue-green fluorescent powder |
| CN102618270A (en) * | 2012-03-19 | 2012-08-01 | 湖南信多利新材料有限公司 | Vanadate substrate fluorescent powder for white light LED (light-emitting diode) and preparation method thereof |
| CN102827604A (en) * | 2012-09-20 | 2012-12-19 | 电子科技大学 | Ultraviolet-excited white light phosphor for LED (light-emitting diode) and preparation method thereof |
-
2020
- 2020-04-22 CN CN202010324071.2A patent/CN111363545A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962542A (en) * | 2010-09-14 | 2011-02-02 | 南昌大学 | Niobate-based red fluorescent powder for white LED as well as preparation method and application thereof |
| CN102517008A (en) * | 2011-12-13 | 2012-06-27 | 广州有色金属研究院 | Alkaline earth metal pyrovanadate blue-green fluorescent powder |
| CN102618270A (en) * | 2012-03-19 | 2012-08-01 | 湖南信多利新材料有限公司 | Vanadate substrate fluorescent powder for white light LED (light-emitting diode) and preparation method thereof |
| CN102827604A (en) * | 2012-09-20 | 2012-12-19 | 电子科技大学 | Ultraviolet-excited white light phosphor for LED (light-emitting diode) and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| TETSUYA MOCHIDA等: "Photoluminescence of Eu3+ in layered A2B2O7 Ferroelectric Crystals", 《JAPANESE JOURNAL OF APPLIED PHYSICS》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhao et al. | Structure and photoluminescence of Eu 3+ doped Sr 2 InTaO 6 red phosphor with high color purity | |
| Li et al. | Synthesis and luminescent properties of Ln3+ (Eu3+, Sm3+, Dy3+)-doped lanthanum aluminum germanate LaAlGe2O7 phosphors | |
| Yu et al. | Luminescent properties of Dy3+ and/or Eu3+ doped Mg2Al4Si5O18 phosphors and energy transfer between Dy3+/Eu3+ ion pairs | |
| Yang et al. | Sm3+-doped Ba3Bi (PO4) 3 orange reddish emitting phosphor | |
| Ramteke et al. | Spectroscopic studies of Sm3+/Dy3+ co-doped lithium boro-silicate glasses | |
| Wei et al. | Tunable emission and energy transfer in single-phased Ba9Lu2Si6O24: Bi3+, Eu3+ for UV W-LEDs | |
| Jin et al. | Novel double perovskite Sr3WO6: Sm3+, Na+ orange-red emitting phosphors with high thermal stability for white LEDs | |
| Long et al. | Thermally stable photoluminescence and long persistent luminescence of Ca3Ga4O9: Tb3+/Zn2+ | |
| Xu et al. | A novel far-red phosphors Li2ZnTi3O8: Cr3+ for indoor plant cultivation: Synthesis and luminescence properties | |
| Li et al. | Synthesis and optical properties of Dy3+, Li+ doped CaMoO4 phosphor | |
| Miao et al. | Deep‐red Ca3Al2Ge3O12: Eu3+ garnet phosphor with near‐unity internal quantum efficiency and high thermal stability for plant growth application | |
| CN102173773A (en) | Transparent ceramic for high-brightness white light emitting diode and preparation method thereof | |
| Zhou et al. | Novel high-saturated red-emitting phosphor Sr9 (Mg0. 5Mn0. 5) K (PO4) 7: Eu2+ with great quantum efficiency enhancement by La3+ codoping for white LED application | |
| CN110003893B (en) | Silicate of silicon yellow-orange long persistence luminescent material and preparation method | |
| Jiao et al. | Color tunable Ba3Lu (PO4) 3: Tb3+, Mn2+ phosphor via Tb3+→ Mn2+ energy transfer for white LEDs | |
| Xie et al. | Simultaneous Spectral Tuning and Thermal Stability Adjustment in Ca8ZnGa (1–x) La x (PO4) 7: Eu2+ Phosphors | |
| CN107345134B (en) | High-sensitivity rare earth doped tungsten bronze fluorescent temperature detection material | |
| CN111849469B (en) | Excitation wavelength dependent multicolor long afterglow luminescent material and preparation method and application thereof | |
| Lu et al. | Dy3+‐doped Y2Zr2O7 highly transparent ceramics for ultraviolet excitable warm white light‐emitting applications | |
| Zhou et al. | Exploration of bluish violet‐emitting phosphor Ca3Al4ZnO10: Ti4+ with enhanced emission by Ca2+ vacancies | |
| Wang et al. | The composition engineering of red‐emitting Eu3+‐doped Ca10. 5 (PO4) 7‐type solid solution phosphors and application in LED | |
| Zhou et al. | Mn4+, Bi3+ Co-doped K0. 5La0. 5SrMgTeO6 far-red emitting phosphor | |
| Xie et al. | A competitive trivalent-europium-activated phosphor: Achieving highly efficient red light emission in a sodium-rich garnet host | |
| Xie et al. | Er3+-activated Na0. 5La0. 5MoO4 multifunctional molybdate phosphors for optical thermometers and white LEDs | |
| CN111363545A (en) | Eu (Eu)3+Preparation method and application of pyrochlore-doped luminescent material |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200703 |