CN116425547B - Chromium ion activated scandium-based fluoride broadband near infrared luminescent ceramic material and preparation method thereof - Google Patents
Chromium ion activated scandium-based fluoride broadband near infrared luminescent ceramic material and preparation method thereof Download PDFInfo
- Publication number
- CN116425547B CN116425547B CN202310251953.4A CN202310251953A CN116425547B CN 116425547 B CN116425547 B CN 116425547B CN 202310251953 A CN202310251953 A CN 202310251953A CN 116425547 B CN116425547 B CN 116425547B
- Authority
- CN
- China
- Prior art keywords
- near infrared
- ceramic material
- infrared luminescent
- luminescent ceramic
- broadband
- 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
- 229910010293 ceramic material Inorganic materials 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 229910001430 chromium ion Inorganic materials 0.000 title claims abstract description 12
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 title claims abstract description 11
- 150000003325 scandium Chemical class 0.000 title claims abstract description 11
- 239000011651 chromium Substances 0.000 claims abstract description 46
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 12
- 238000004806 packaging method and process Methods 0.000 claims abstract description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 21
- 239000008367 deionised water Substances 0.000 claims description 18
- 229910021641 deionized water Inorganic materials 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000005406 washing Methods 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 239000002244 precipitate Substances 0.000 claims description 8
- 239000012467 final product Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 34
- 239000000843 powder Substances 0.000 abstract description 25
- 239000000126 substance Substances 0.000 abstract description 9
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 7
- 229910052804 chromium Inorganic materials 0.000 description 7
- 235000019441 ethanol Nutrition 0.000 description 7
- 238000005303 weighing Methods 0.000 description 7
- 230000003213 activating effect Effects 0.000 description 6
- 238000000695 excitation spectrum Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 3
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 238000006862 quantum yield reaction Methods 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005090 crystal field Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000002189 fluorescence spectrum Methods 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 229910001428 transition metal ion Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/553—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on fluorides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- 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
- C09K11/7704—Halogenides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/444—Halide containing anions, e.g. bromide, iodate, chlorite
- C04B2235/445—Fluoride containing anions, e.g. fluosilicate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9646—Optical properties
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Abstract
The invention discloses a chromium ion activated scandium-based fluoride broadband near infrared luminescent ceramic material and a preparation method thereof, wherein the chromium ion activated scandium-based fluoride broadband near infrared luminescent ceramic material is obtained by a hydrothermal method and high-temperature hot-press post-treatment, and has the chemical formula: k (K) 2 LiSc 1‑x Cr x F 6 X=0.10 to 0.20. The material has a strong broadband absorption peak between 350 and 500 nanometers, can be excited by a blue light chip, has a strong broadband emission peak around 770 nanometers, and has higher density compared with the corresponding powder material, thereby having better heat conductivity and thermal stability, and can be used for packaging high-power NIRpc-LED devices.
Description
Technical field:
the invention relates to the technical field of inorganic luminescent materials, in particular to a chromium ion activated scandium-based fluoride broadband near infrared luminescent material and a preparation method thereof.
The background technology is as follows:
near infrared spectrum detection technology is widely applied to daily life and industrial production, and near infrared fluorescence conversion type light emitting diode (NIR pc-LED) is attracting attention in recent years as a next-generation intelligent near infrared light source. Near infrared luminescent materials are one of the key components of NIRpc-LEDs and play a vital role in the performance of NIRpc-LED devices.
Among the numerous transition metal ions, cr 3+ The blue light broadband absorption (which can be excited by an InGaN blue light chip) and near infrared broadband emission are strong; in addition, due to Cr 3+ Unique 3d 3 The electron configuration, the position and the peak width of the emission peak of the broadband near infrared luminescent material can be easily adjusted by changing the crystal field, and the special properties completely meet the requirements of the near infrared luminescent material for NIR pc-LED, so that people can know Cr 3+ Ion activated broadband proximityInfrared light emitting materials have been intensively studied.
The invention comprises the following steps:
the invention aims to provide a chromium ion activated scandium-based fluoride broadband near infrared luminescent ceramic material and a preparation method thereof, wherein the chromium ion activated scandium-based fluoride broadband near infrared luminescent ceramic material is prepared by a hydrothermal method and high-temperature hot-pressing post-treatment, has a very strong broadband absorption peak between 350 and 500 nanometers, can be excited by a blue light chip, has a very strong broadband emission peak around 770 nanometers, and has higher density compared with a corresponding powder material, so that the ceramic material has better thermal conductivity and thermal stability, and can be used for packaging high-power NIRpc-LED devices.
The invention is realized by the following technical scheme:
a chromium ion activated scandium-based fluoride broadband near infrared luminescent ceramic material has a chemical formula: k (K) 2 LiSc 1- x Cr x F 6 ,x=0.10~0.20。
The preparation method of the material comprises the following steps: will (NH) 4 ScF 6 、(NH) 4 CrF 6 、Li(OH)·H 2 Adding O and KF (1-x) in a molar ratio of (7-12) into deionized water, stirring, transferring the solution into a hydrothermal reaction kettle, preserving heat at 200 ℃ for 10 hours, naturally cooling to room temperature, centrifuging to obtain precipitate, washing with deionized water, washing with absolute ethyl alcohol, drying at 75 ℃ for 3 hours, and then treating at 600 ℃ for 5 hours under 220Mpa to obtain a final product K 2 LiSc 1-x Cr x F 6 Broadband near infrared luminescent ceramic material.
Pure phases are obtained only in the presence of an excess of KF, and (NH) 4 ScF 6 、(NH) 4 CrF 6 、Li(OH)·H 2 O and KF are optimal in luminous intensity at the ratio of (1-x): x:1:10.
The invention also protects application of the chromium ion activated scandium-based fluoride broadband near infrared luminescent ceramic material for packaging high-performance NIRpc-LED devices.
Advantageous effects of the inventionThe effects are as follows: the chromium ion activated fluoride broadband near infrared luminescent ceramic material prepared by the hydrothermal method and the high-temperature hot-pressing post-treatment has a strong broadband absorption peak between 350 and 500 nanometers, can be excited by a blue light chip, has a strong broadband emission peak around 770 nanometers, and is treated for 5 hours at 600 ℃ and 220Mpa to obtain the ceramic material with the density obviously higher than that of a corresponding powder material, so that the ceramic material has better thermal conductivity and thermal stability and can be used for packaging high-performance NIR pc-LED devices. The quantum efficiency of the prepared near infrared luminescent ceramic material is higher than that of the reported K 2 NaScF 6 :Cr 3+ (Laser&Photonics Reviews,2020,15,2000410) and K 2 NaInF 6 :Cr 3+ Near infrared luminescent powder material (Chemical Engineering Journal,2022,427,131740).
Description of the drawings:
FIG. 1 is a Cr produced in example 1 3+ Activating the fluorescence excitation spectrum of the broadband near infrared luminescent ceramic material.
FIG. 2 is a Cr produced in example 2 3+ Activating the fluorescence excitation spectrum of the broadband near infrared luminescent ceramic material.
FIG. 3 is a Cr produced in example 3 3+ Activating the fluorescence excitation spectrum of the broadband near infrared luminescent ceramic material. As can be seen from FIG. 3, the product has a strong broadband absorption peak between 350 and 500 nm, which can be excited by the blue light chip.
FIG. 4 is a fluorescence excitation spectrum of the Cr3+ activated broadband near infrared luminescent ceramic material prepared in example 4.
FIG. 5 is a fluorescence excitation spectrum of the Cr3+ activated broadband near infrared luminescent ceramic material prepared in example 5.
FIG. 6 is a fluorescence excitation spectrum of the Cr3+ activated broadband near infrared luminescent ceramic material prepared in example 6.
FIG. 7 is a drawing of Cr produced in example 3 3+ Activating the fluorescence emission spectrum of the broadband near infrared luminescent ceramic material. As can be seen from FIG. 7, the product has very strong broadband near infrared emission around 770 nm, and can be used for packaging high-performance NIRpc-LED devices.
FIG. 8 is a graph showing the comparison of the luminous intensity of the products obtained in examples 1 to 4. As can be seen from FIG. 8, when KF: li (OH). H 2 The luminous intensity of the material is strongest when the molar ratio of O is 10:1.
FIG. 9 is example 3 and reported K 2 NaScF 6 :Cr 3+ 、K 2 NaInF 6 :Cr 3+ Quantum yield contrast plot for near infrared luminescent powder materials. As can be seen from FIG. 9, this patent K 2 LiScF 6 :Cr 3+ The quantum yield of the ceramic material is superior to that of the reported K 2 NaScF 6 :Cr 3+ And K 2 NaInF 6 :Cr 3+ Near infrared luminescent powder material.
FIG. 10 is a drawing showing the Cr produced in comparative example 1 3+ And activating the broadband near infrared luminous powder scanning electron microscope picture. As can be seen from fig. 10, the powder material is in the form of dispersed spheres, and the particles are relatively dispersed.
FIG. 11 is a drawing of Cr produced in example 3 3+ And activating the scanning electron microscope picture of the broadband near infrared luminescent ceramic material. Compared with the powder material in fig. 10, the ceramic material in fig. 11 has obviously higher compactness, so that the ceramic material can have better heat conductivity and thermal stability than the powder material, and can be used for high-power NIRpc-LED devices.
The specific embodiment is as follows:
the following is a further illustration of the invention and is not a limitation of the invention.
Example 1:
cr (chromium) 3+ Doped broadband near infrared luminescent ceramic material with chemical formula of K 2 LiSc 0.90 Cr 0.10 F 6 。
Cr described above 3+ The preparation method of the doped broadband near infrared luminescent ceramic material comprises the following steps:
at room temperature, weighing (NH) according to the molar ratio of 0.90:0.10:1:6 4 ScF 6 、(NH) 4 CrF 6 、Li(OH)·H 2 Adding O and KF into 25 ml deionized water, stirring for 10 min, transferring the solution into a hydrothermal reaction kettle, preserving heat at 200 ℃ for 10 h, naturally cooling to room temperature, centrifuging the solution to obtain precipitateWashing with deionized water for 3 times, then washing with ethanol for 3 times, and drying at 75 ℃ for 3 hours to obtain the broadband near infrared luminescent powder material. The powder material is further kept at 600 ℃ and 220Mpa for 5 hours, and the final product broadband near infrared luminescent ceramic material is obtained after natural cooling to room temperature.
Example 2
Cr (chromium) 3+ Doped broadband near infrared luminescent ceramic material with chemical formula of K 2 LiSc 0.90 Cr 0.10 F 6 。
Cr described above 3+ The preparation method of the doped broadband near infrared luminescent ceramic material comprises the following steps:
at room temperature, weighing (NH) according to the molar ratio of 0.90:0.10:1:8 4 ScF 6 、(NH) 4 CrF 6 、Li(OH)·H 2 Adding O and KF into 25 ml of deionized water, stirring for 10 minutes, transferring the solution into a hydrothermal reaction kettle, preserving heat for 10 hours at 200 ℃, naturally cooling to room temperature, centrifuging the solution obtained in the steps to obtain precipitate, washing 3 times with deionized water, washing 3 times with ethanol, and drying for 3 hours at 75 ℃ to obtain the broadband near infrared luminescent powder material. The powder material is further kept at 600 ℃ and 220Mpa for 5 hours, and the final product broadband near infrared luminescent ceramic material is obtained after natural cooling to room temperature.
Example 3
Cr (chromium) 3+ Doped broadband near infrared luminescent ceramic material with chemical formula of K 2 LiSc 0.90 Cr 0.10 F 6 。
Cr described above 3+ The preparation method of the doped broadband near infrared luminescent ceramic material comprises the following steps:
at room temperature, weighing (NH) according to the molar ratio of 0.90:0.10:1:10 4 ScF 6 、(NH) 4 CrF 6 、Li(OH)·H 2 Adding O and KF into 25 ml deionized water, stirring for 10 min, transferring the solution into a hydrothermal reaction kettle, preserving heat at 200 ℃ for 10 h, naturally cooling to room temperature, centrifuging the solution obtained in the above step to obtain precipitate, washing with deionized water for 3 times, and then washing with ethyl acetateWashing with alcohol for 3 times, and drying at 75deg.C for 3 hours to obtain broadband near infrared luminescent powder material. The powder material is further kept at 600 ℃ and 220Mpa for 5 hours, and the final product broadband near infrared luminescent ceramic material is obtained after natural cooling to room temperature.
Comparative example 1
Cr (chromium) 3+ Doped broadband near infrared luminescent powder material with chemical formula of K 2 LiSc 0.90 Cr 0.10 F 6 。
Cr described above 3+ The preparation method of the doped broadband near infrared luminescent powder material comprises the following steps:
at room temperature, weighing (NH) according to the molar ratio of 0.90:0.10:1:10 4 ScF 6 、(NH) 4 CrF 6 、Li(OH)·H 2 Adding O and KF into 25 ml of deionized water, stirring for 10 minutes, transferring the solution into a hydrothermal reaction kettle, preserving heat for 10 hours at 200 ℃, naturally cooling to room temperature, centrifuging the solution obtained in the steps to obtain precipitate, washing 3 times with deionized water, washing 3 times with ethanol, and drying for 3 hours at 75 ℃ to obtain the broadband near infrared luminescent powder material.
Example 4
Cr (chromium) 3+ Doped broadband near infrared luminescent ceramic material with chemical formula of K 2 LiSc 0.90 Cr 0.10 F 6 。
Cr described above 3+ The preparation method of the doped broadband near infrared luminescent ceramic material comprises the following steps:
at room temperature, weighing (NH) according to the molar ratio of 0.90:0.10:1:12 4 ScF 6 、(NH) 4 CrF 6 、Li(OH)·H 2 Adding O and KF into 25 ml of deionized water, stirring for 10 minutes, transferring the solution into a hydrothermal reaction kettle, preserving heat for 10 hours at 200 ℃, naturally cooling to room temperature, centrifuging the solution obtained in the steps to obtain precipitate, washing 3 times with deionized water, washing 3 times with ethanol, and drying for 3 hours at 75 ℃ to obtain the broadband near infrared luminescent powder material. The powder material is further kept at 600 ℃ and 220Mpa for 5 hours, and naturally cooled to room temperature to obtain the final productThe material is a broadband near infrared luminescent ceramic material.
Example 5
Cr (chromium) 3+ Doped broadband near infrared luminescent ceramic material with chemical formula of K 2 LiSc 0.85 Cr 0.15 F 6 。
Cr described above 3+ The preparation method of the doped broadband near infrared luminescent ceramic material comprises the following steps:
at room temperature, weighing (NH) according to the molar ratio of 0.85:0.15:1:10 4 ScF 6 、(NH) 4 CrF 6 、Li(OH)·H 2 Adding O and KF into 25 ml of deionized water, stirring for 10 minutes, transferring the solution into a hydrothermal reaction kettle, preserving heat for 10 hours at 200 ℃, naturally cooling to room temperature, centrifuging the solution obtained in the steps to obtain precipitate, washing 3 times with deionized water, washing 3 times with ethanol, and drying for 3 hours at 75 ℃ to obtain the broadband near infrared luminescent powder material. The powder material is further kept at 600 ℃ and 220Mpa for 5 hours, and the final product broadband near infrared luminescent ceramic material is obtained after natural cooling to room temperature.
Example 6
Cr (chromium) 3+ Doped broadband near infrared luminescent ceramic material with chemical formula of K 2 LiSc 0.80 Cr 0.20 F 6 。
Cr described above 3+ The preparation method of the doped broadband near infrared luminescent ceramic material comprises the following steps:
at room temperature, weighing (NH) according to the molar ratio of 0.80:0.20:1:10 4 ScF 6 、(NH) 4 CrF 6 、Li(OH)·H 2 Adding O and KF into 25 ml of deionized water, stirring for 10 minutes, transferring the solution into a hydrothermal reaction kettle, preserving heat for 10 hours at 200 ℃, naturally cooling to room temperature, centrifuging the solution obtained in the steps to obtain precipitate, washing 3 times with deionized water, washing 3 times with ethanol, and drying for 3 hours at 75 ℃ to obtain the broadband near infrared luminescent powder material. The powder material is further kept at 600 ℃ and 220Mpa for 5 hours, and the final product broadband near infrared luminescent ceramic material is obtained after natural cooling to room temperature.
Claims (3)
1. The preparation method of the chromium ion activated scandium-based fluoride broadband near infrared luminescent ceramic material is characterized by comprising the following steps of: will (NH) 4 ScF 6 、(NH) 4 CrF 6 、Li(OH)·H 2 Adding O and KF (1-x) in a molar ratio of (7-12) into deionized water, stirring, transferring the solution into a hydrothermal reaction kettle, preserving heat at 200 ℃ for 10 hours, naturally cooling to room temperature, centrifuging to obtain precipitate, washing with deionized water, washing with absolute ethyl alcohol, drying at 75 ℃ for 3 hours, and then treating at 600 ℃ for 5 hours under 220Mpa to obtain a final product K 2 LiSc 1-x Cr x F 6 Broad band near infrared luminescent ceramic material, x=0.10-0.20.
2. The method according to claim 1, wherein (NH) 4 ScF 6 、(NH) 4 CrF 6 、Li(OH)·H 2 The molar ratio of O to KF is (1-x): x:1:10.
3. The application of the chromium ion activated scandium-based fluoride broadband near infrared luminescent ceramic material obtained by the preparation method of claim 1, which is characterized by being used for packaging high-performance NIRpc-LED devices.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310251953.4A CN116425547B (en) | 2023-03-16 | 2023-03-16 | Chromium ion activated scandium-based fluoride broadband near infrared luminescent ceramic material and preparation method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310251953.4A CN116425547B (en) | 2023-03-16 | 2023-03-16 | Chromium ion activated scandium-based fluoride broadband near infrared luminescent ceramic material and preparation method thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
CN116425547A CN116425547A (en) | 2023-07-14 |
CN116425547B true CN116425547B (en) | 2024-01-30 |
Family
ID=87088127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202310251953.4A Active CN116425547B (en) | 2023-03-16 | 2023-03-16 | Chromium ion activated scandium-based fluoride broadband near infrared luminescent ceramic material and preparation method thereof |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN116425547B (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1942172A1 (en) * | 2006-12-21 | 2008-07-09 | E.I.Du pont de nemours and company | Novel rare-earth doped fluorides and process for preparing them |
CN106220179A (en) * | 2016-07-10 | 2016-12-14 | 九江学院 | A kind of Ba2laF7: Er3+the preparation method of upper conversion transparent ceramic |
EP3674382A1 (en) * | 2018-12-26 | 2020-07-01 | Nichia Corporation | Fluoride fluorescent material, light emitting device, and method for producing fluoride fluorescent material |
CN114907852A (en) * | 2022-05-06 | 2022-08-16 | 东南大学 | ScF 3 :Cr 3+ Preparation method and application of near-infrared fluorescent powder with less solvent |
CN115197702A (en) * | 2021-04-08 | 2022-10-18 | 中国科学院宁波材料技术与工程研究所 | Fluoride salt near-infrared fluorescent powder and preparation method and application thereof |
WO2022252400A1 (en) * | 2021-06-04 | 2022-12-08 | 有研稀土新材料股份有限公司 | Near-infrared light-emitting substance and light-emitting device comprising same |
CN115651655A (en) * | 2022-11-16 | 2023-01-31 | 云南民族大学 | Near-infrared luminescent material with ultrahigh fluorescence thermal stability, and preparation method and application thereof |
CN115785956A (en) * | 2022-11-16 | 2023-03-14 | 云南民族大学 | Cr (chromium) 3+ Doped hexafluoroscandate near-infrared fluorescent powder and preparation method and application thereof |
-
2023
- 2023-03-16 CN CN202310251953.4A patent/CN116425547B/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1942172A1 (en) * | 2006-12-21 | 2008-07-09 | E.I.Du pont de nemours and company | Novel rare-earth doped fluorides and process for preparing them |
CN106220179A (en) * | 2016-07-10 | 2016-12-14 | 九江学院 | A kind of Ba2laF7: Er3+the preparation method of upper conversion transparent ceramic |
EP3674382A1 (en) * | 2018-12-26 | 2020-07-01 | Nichia Corporation | Fluoride fluorescent material, light emitting device, and method for producing fluoride fluorescent material |
CN115197702A (en) * | 2021-04-08 | 2022-10-18 | 中国科学院宁波材料技术与工程研究所 | Fluoride salt near-infrared fluorescent powder and preparation method and application thereof |
WO2022252400A1 (en) * | 2021-06-04 | 2022-12-08 | 有研稀土新材料股份有限公司 | Near-infrared light-emitting substance and light-emitting device comprising same |
CN114907852A (en) * | 2022-05-06 | 2022-08-16 | 东南大学 | ScF 3 :Cr 3+ Preparation method and application of near-infrared fluorescent powder with less solvent |
CN115651655A (en) * | 2022-11-16 | 2023-01-31 | 云南民族大学 | Near-infrared luminescent material with ultrahigh fluorescence thermal stability, and preparation method and application thereof |
CN115785956A (en) * | 2022-11-16 | 2023-03-14 | 云南民族大学 | Cr (chromium) 3+ Doped hexafluoroscandate near-infrared fluorescent powder and preparation method and application thereof |
Also Published As
Publication number | Publication date |
---|---|
CN116425547A (en) | 2023-07-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Shan et al. | High performance metal halide perovskite light‐emitting diode: from material design to device optimization | |
Zhang et al. | Fluorescent nanomaterial-derived white light-emitting diodes: what's going on | |
Zhang et al. | Self‐quenching‐resistant red emissive carbon dots with high stability for warm white light‐emitting diodes with a high color rendering index | |
Luk et al. | An efficient and stable fluorescent graphene quantum dot–agar composite as a converting material in white light emitting diodes | |
KR102592690B1 (en) | Nanocrystal and preparing method thereof | |
Li et al. | Achieving 46% efficient white-light emissive carbon dot-based materials by enhancing phosphorescence for single-component white-light-emitting diodes | |
Lian et al. | Highly thermotolerant metal halide perovskite solids | |
Wu et al. | Preparation and photoluminescence properties of Y 2 O 3: Eu, Bi phosphors by molten salt synthesis for white light-emitting diodes | |
JP4961526B2 (en) | Visible light emitting material using surface modification of silica fine particles and method for producing the same | |
JP6821813B6 (en) | Nitride light emitting material and light emitting device containing it | |
Bandi et al. | Luminescent properties of a new green emitting Eu2+ doped CaZrSi2O7 phosphor for WLED applications | |
KR102065686B1 (en) | Graphitic carbon nitride manufacturing method, graphitic carbon nitride-polysteren composite manufacturing method and oled device comprising graphitic carbon nitride-polysteren composite | |
CN112574738B (en) | Preparation method for improving stability of perovskite quantum dots | |
CN111635758A (en) | Preparation method of silica-coated fluorescent carbon quantum dot composite microspheres | |
CN116425547B (en) | Chromium ion activated scandium-based fluoride broadband near infrared luminescent ceramic material and preparation method thereof | |
Liu et al. | Near‐Infrared Light Emitting Metal Halides: Materials, Mechanisms, and Applications | |
Liu | Tunable emission and the systematic study on energy-transfer properties of Ce 3+-and Tb 3+-co-doped Sr 3 (PO 4) 2 phosphors | |
Choi et al. | Characterization of Ca2SiO4: Eu2+ phosphors synthesized by polymeric precursor process | |
Kwon et al. | Design of binder-free phosphor paste for warm white LEDs | |
CN114214063B (en) | Preparation method of single-matrix white light emission carbon dot fluorescent powder | |
CN110791282B (en) | Mn-doped steel wire4+Alkali metal fluoferrite red luminescent material and preparation method thereof | |
Ruan et al. | White light-emitting diodes of high color rendering index with polymer dot phosphors | |
Liao et al. | Photoluminescence properties of La2− xEux (WO4) 3 red phosphor prepared by hydrothermal method | |
CN111849471B (en) | Double-emitting carbon nano material, preparation method and application thereof | |
CN116463121B (en) | Tetravalent manganese ion and chromium ion co-doped scandium-based fluoride broadband near infrared 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 |