WO2013166665A1 - 核壳结构的硅酸盐发光材料及其制备方法 - Google Patents
核壳结构的硅酸盐发光材料及其制备方法 Download PDFInfo
- Publication number
- WO2013166665A1 WO2013166665A1 PCT/CN2012/075209 CN2012075209W WO2013166665A1 WO 2013166665 A1 WO2013166665 A1 WO 2013166665A1 CN 2012075209 W CN2012075209 W CN 2012075209W WO 2013166665 A1 WO2013166665 A1 WO 2013166665A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- luminescent material
- core
- shell structure
- silicate luminescent
- precursor
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims abstract description 59
- 239000011258 core-shell material Substances 0.000 title claims abstract description 45
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title abstract description 23
- 239000000126 substance Substances 0.000 claims abstract description 15
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 8
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 7
- 229910052692 Dysprosium Inorganic materials 0.000 claims abstract description 7
- 229910052693 Europium Inorganic materials 0.000 claims abstract description 7
- 229910052688 Gadolinium Inorganic materials 0.000 claims abstract description 7
- 229910052765 Lutetium Inorganic materials 0.000 claims abstract description 7
- 229910052772 Samarium Inorganic materials 0.000 claims abstract description 7
- 229910052771 Terbium Inorganic materials 0.000 claims abstract description 7
- 229910052775 Thulium Inorganic materials 0.000 claims abstract description 7
- 229910052706 scandium Inorganic materials 0.000 claims abstract description 7
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 44
- 239000004005 microsphere Substances 0.000 claims description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 239000000725 suspension Substances 0.000 claims description 34
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 29
- 239000002243 precursor Substances 0.000 claims description 29
- 239000000243 solution Substances 0.000 claims description 26
- 239000012535 impurity Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 19
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 17
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 16
- 239000002244 precipitate Substances 0.000 claims description 15
- 229910002651 NO3 Inorganic materials 0.000 claims description 12
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- 238000001354 calcination Methods 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 7
- 229910021529 ammonia Inorganic materials 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 125000004494 ethyl ester group Chemical group 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 238000010894 electron beam technology Methods 0.000 abstract description 8
- 239000011159 matrix material Substances 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 229910052909 inorganic silicate Inorganic materials 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 16
- 235000011114 ammonium hydroxide Nutrition 0.000 description 16
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 238000003760 magnetic stirring Methods 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 238000003980 solgel method Methods 0.000 description 7
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 6
- 229910004283 SiO 4 Inorganic materials 0.000 description 6
- 229910017604 nitric acid Inorganic materials 0.000 description 6
- 238000001132 ultrasonic dispersion Methods 0.000 description 6
- 230000007774 longterm Effects 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- 238000005119 centrifugation Methods 0.000 description 3
- 238000005253 cladding Methods 0.000 description 3
- 238000004020 luminiscence type Methods 0.000 description 3
- 241001538234 Nala Species 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 150000003568 thioethers Chemical class 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000003471 anti-radiation Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000010532 solid phase synthesis reaction Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
- C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
- B05D3/0413—Heating with air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0433—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being a reactive gas
- B05D3/0453—After-treatment
-
- 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
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
-
- 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
- C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
- C09K11/77742—Silicates
-
- 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
- C09K11/77922—Silicates
Definitions
- the invention relates to the technical field of luminescent materials, in particular to a silicate luminescent material having a core-shell structure and a preparation method thereof.
- the conventional sulfide system phosphor mainly includes: blue powder ZnS: Ag, CI, SrGa 2 S 4 : Ce, green powder SrGa 2 S 4 : Eu, and red powder Y 2 0 2 S: Eu.
- the matrix is unstable, and it is easy to decompose and generate gas, such as H 2 S, which not only poisons the cathode, but also causes the cathode to emit electrons, and the phosphor
- gas such as H 2 S
- M is one or two of Li, Na and K elements
- Ln is one or two of Y, Sc, Lu, and La elements, and x has a value range of 0 ⁇ x ⁇ 0.6; RE is one, two or three of the Tb, Gd, Sm, Eu, Dy, Ce and Tm elements.
- X has a value in the range of 0.01 x 0.3.
- a method for preparing a core-shell structured silicate luminescent material comprises the following steps:
- the nitrate solution of the corresponding RE and the nitrate solution of M are taken, mixed with a water bath at 50 ° C ⁇ 90 ° C and the pH is adjusted to 1 ⁇ 6, then Adding tetraethyl orthosilicate to obtain a mixed solution, wherein M is one or two of lanthanum, Na and K elements, and Ln is one or two of Y, Sc, Lu and La elements, and X is taken The value ranges from 0 ⁇ x ⁇ 0.6, and RE is one, two or three of Tb, Gd, Sm, Eu, Dy, Ce and Tm elements;
- the precursor is pre-fired and ground, and the pre-burning and grinding operation is repeated once to four times, and then calcined in an air atmosphere or a reducing atmosphere to obtain a core-shell structured silicate luminescent material.
- the formula is: MLn 1-x Si0 4 : xRE@Si0 2 , where @ indicates cladding.
- the operation of removing impurities after centrifugation is:
- the suspension of the impurity-containing SiO 2 microspheres was centrifuged at a rotational speed of 12,000 rpm to obtain a precipitate, followed by washing the precipitate three times with deionized water.
- the nitrate solution of the corresponding RE and the nitrate solution of M are in the range of 0.1 M to 5 M.
- X has a value in the range of 0.01 x 0.3.
- the precursor is obtained by: drying the gel completely at 80 ° C to 150 ° C to obtain a precursor.
- the pre-burning and polishing of the precursor is performed by: pre-sintering the precursor at 500 ° C to 800 ° C for 2 h to 7 h, cooling and grinding.
- the calcination temperature in an air atmosphere or a reducing atmosphere is from 900 ° C to 1600 ° C for a period of from 2 h to 10 h.
- the reducing atmosphere is a mixed atmosphere consisting of 95% by volume of N 2 and 5% of H 2 .
- the core-shell structured silicate luminescent material has the general formula MLn 1-x Si0 4 :xRE@Si0 2 , and its components are all compounds with high chemical stability.
- the matrix is stable under the bombardment of long-term electron beams. Not easy to break down.
- FIG. 1 is a flow chart showing a method for preparing a core-shell structured silicate luminescent material according to an embodiment
- FIG. 2 is a silicate luminescent material having a core-shell structure prepared in Example 5 and NaY. . 8 Si0 4 : 0.18Gd 3+ , 0.02Tb 3+ luminescent material comparison chart of luminescence spectra under 5kV electron beam excitation.
- M is one or two of Li, Na and K elements
- Ln is one or two of Y, Sc, Lu and La elements, and x has a value range of 0 ⁇ x ⁇ 0.6;
- RE is one, two or three of the Tb, Gd, Sm, Eu, Dy, Ce and Tm elements.
- the silicate luminescent material of such a core-shell structure is stable under a long-term electron beam bombardment and is not easily decomposed. Compared with the luminescent material without core-shell structure, it has higher luminous efficiency and can be better applied to field emission light source devices.
- X may have a value in the range of 0.01 X 0.3.
- a method for preparing a core-shell structured silicate luminescent material as shown in FIG. 1 includes the following steps: S10, according to the volume fraction, 10 parts to 20 parts of water, 15 parts to 50 parts of absolute ethanol and 1 part to 7 parts of ammonia water are mixed, and then 0.5 parts to 3 parts of the volume fraction are added under stirring. Ethyl orthosilicate, continue to stir the reaction for 2h ⁇ 6h, remove the impurities after centrifugation, and re-disperse the precipitate into 10 ⁇ 20 parts of absolute ethanol to obtain a suspension of Si0 2 microspheres.
- the conditions of stirring can be provided by magnetic stirring.
- a suspension of SiO 2 microspheres containing impurities is centrifuged at a rotational speed of 12,000 rpm to obtain a precipitate, and then the precipitate is washed three times with deionized water to remove residual ammonia water and residual TEOS to obtain SiO 2 microspheres.
- the process of precipitation redispersion can be dispersed by ultrasound.
- the concentration range of the corresponding RE nitrate solution and M nitrate solution is 0.1M ⁇ 5M.
- X may have a value in the range of 0.01 x 0.3.
- the order of S10 and S20 can be adjusted to each other without affecting the preparation method of the silicate luminescent material of the core-shell structure.
- the gel is completely dried in an oven at 80 ° C to 150 ° C to obtain a precursor.
- S40 pre-burning the precursor obtained in S30, grinding, repeating the pre-burning and grinding operation once to four times, followed by calcination in an air atmosphere or a reducing atmosphere, and cooling to obtain a core-shell structured silicate luminescent material.
- Its molecular formula is: MLn 1-x Si0 4 : xRE@Si0 2 , where @ represents the coating.
- the precursor is placed in a high temperature furnace and calcined at 500 ° C ⁇ 800 ° C for 2 h ⁇ 7 h, cooled to room temperature and then ground.
- the process after calcination can be repeated once to four times.
- the ground precursor is placed in a box type high temperature furnace or a tube furnace, in an air atmosphere or a reducing atmosphere,
- the reducing atmosphere is a mixed atmosphere composed of 95% by volume of N 2 and 5% of H 2 .
- the preparation method of the silicate luminescent material having such a core-shell structure is prepared by a sol-gel method to prepare a core-shell structured silicate powder having a small size and a uniform morphology without ball milling.
- Most of the traditional commercial luminescent materials are prepared by high-temperature solid-phase method. The high-temperature reaction consumes a lot of energy and the particle distribution is uneven. The morphology of the powders is different. It is necessary to use a ball milling method to obtain luminescent materials with a particle size of 2-8 microns. This process reduces the luminous intensity of the luminescent material.
- the preparation method of the silicate luminescent material having the core-shell structure, the thickness of the luminescent material shell layer can be controlled by the process, and the prepared core-shell luminescent material has a single and unique shape, and has better luminescence performance than the conventional commercial luminescent material. .
- NaY was prepared by a sol-gel method. 99 Si0 4 : 0.01Tb 3+ @SiO 2 .
- the suspension of the above Si0 2 microspheres was added with stirring at 50 ° C in a water bath, and stirred well until a gel was obtained. Put the gel obtained The oven was completely dried in an oven at 80 ° C to obtain a precursor.
- the precursor was placed in a high temperature furnace, pre-fired at 500 ° C for 7 h, cooled to room temperature, and ground; then, placed in a tube furnace at 900 ° C, 95% N 2 + 5% H 2 Calcination in a reducing atmosphere for 10 h, natural cooling, and the desired core-shell luminescent material is obtained after removal.
- Sol - gel method LiLa 0 7 SiO 4:. 0.3Ce 3+ @SiO 2.
- Si0 2 microspheres 20 mL of water was placed in a beaker, then 50 mL of absolute ethanol and 7 mL of ammonia water were added in sequence, magnetically stirred evenly, and then 3 mL of orthosilicate was added dropwise under magnetic stirring.
- TEOS TEOS
- reaction was stirred for 2 h, to give a suspension containing Si0 2 impurities microspheres; the resulting impurity-containing Si0 2 suspension of microspheres was centrifuged 12000rpm rotation speed of deionized water Three times, to remove the remaining ammonia and residual TEOS, the resulting precipitate is the Si0 2 microspheres.
- the obtained Si0 2 microspheres were redispersed by ultrasonic dispersion into 20 mL of absolute ethanol to obtain a suspension of Si0 2 microspheres.
- LiLa 0 . 7 SiO 4 0.3Ce 3+ @SiO 2 core-shell luminescent material: According to the chemical formula, accurately weigh 3.5ml 2mol/L La(N0 3 ) 3 , 1.5ml 2mol/L Ce ( N0 3 ) 3 and 5 ml of a 2 mol/L LiN0 3 solution were placed in a beaker, heated in a water bath at 90 ° C, and adjusted to pH 6 with aqueous ammonia and dilute nitric acid. Depending on the amount of silicon source required, 2.3 ml of tetraethyl orthosilicate (TEOS) was added dropwise to the above solution.
- TEOS tetraethyl orthosilicate
- Si0 2 microspheres 15m L of water was placed in a beaker, then 20m L of absolute ethanol and 3mL of ammonia water were added in sequence, magnetically stirred evenly, and then 1.5 mL of orthosilicate was added dropwise under magnetic stirring. Ethyl ester (TEOS), after the completion of the dropwise addition, reaction was stirred for 3h, to give a suspension containing Si0 2 impurities microspheres; the resulting impurity-containing Si0 2 suspension of microspheres was centrifuged 12000rpm rotation speed of deionized The water was washed three times to remove the remaining ammonia water and residual TEOS, and the resulting precipitate was SiO 2 microspheres. The obtained SiO 2 microspheres were redispersed by ultrasonic dispersion into 15 mL of absolute ethanol to obtain a suspension of SiO 2 microspheres.
- TEOS thyl ester
- TEOS tetraethyl orthosilicate
- Si0 2 microspheres Place 15m L of water in a beaker, then add 30m L of absolute ethanol and 5mL of ammonia water in sequence, stir evenly, then add 2 mL of orthosilicate in a magnetic stirring environment. Ethyl acetate (TEOS), after completion of the dropwise addition, the reaction was further stirred for 4 hours to obtain a suspension of SiO 2 microspheres containing impurities.
- the obtained SiO 2 suspension containing impurities was centrifuged at 12,000 rpm and washed three times with deionized water to remove residual ammonia and residual TEOS, and the obtained precipitate was SiO 2 microspheres.
- the obtained Si0 2 microspheres were redispersed by ultrasonic dispersion into 20 mL of absolute ethanol to obtain a suspension of Si0 2 microspheres.
- TEOS tetraethyl orthosilicate
- NaY 0 . 8 SiO 4 : 0.18 Gd 3+ , 0.02 Tb 3+ @SiO 2 was prepared by a sol-gel method.
- Si0 2 microspheres 15m L of water was placed in a beaker, then 30m L of absolute ethanol and 5mL of ammonia water were added in sequence, magnetically stirred evenly, and then 1.5 mL of orthosilicate was added dropwise under magnetic stirring. Ethyl acetate (TEOS), after completion of the dropwise addition, the reaction was further stirred for 4 hours to obtain a suspension of SiO 2 microspheres containing impurities. The obtained SiO 2 suspension containing impurities was centrifuged at 12,000 rpm and washed three times with deionized water to remove residual ammonia and residual TEOS, and the obtained precipitate was SiO 2 microspheres. The obtained SiO 2 microspheres were redispersed by ultrasonic dispersion into 15 mL of absolute ethanol to obtain a suspension of SiO 2 microspheres.
- TEOS thyl acetate
- TEOS tetraethyl orthosilicate
- 0.18Gd 3+, 0.02Tb 3+ luminescent materials Si0 2 without addition of a suspension of microspheres, 4 0 8 SiO NaY prepared under the same conditions. Curves a and b in Fig. 1 are NaY prepared in this example, respectively. 8 Si0 4 : 0.18Gd 3+ , 0.02Tb 3+ @SiO 2 core-shell luminescent material and NaY. . 8 Si0 4 : 0.18Gd 3+ , 0.02Tb 3+ luminescent material comparison chart of luminescence spectra under 5kV electron beam excitation.
- NaLa was prepared by a sol-gel method. 95 Si0 4 : 0.05Dy 3+ @SiO 2 .
- Si0 2 microspheres Place 15m L of water in a beaker, then add 30m L of absolute ethanol and 5mL of ammonia water in sequence, stir evenly, then add 2 mL of orthosilicate in a magnetic stirring environment. Ethyl acetate (TEOS), after completion of the dropwise addition, the reaction was further stirred for 4 hours to obtain a suspension of SiO 2 microspheres containing impurities.
- the obtained SiO 2 suspension containing impurities was centrifuged at 12,000 rpm and washed three times with deionized water to remove residual ammonia and residual TEOS, and the obtained precipitate was SiO 2 microspheres.
- the obtained Si0 2 microspheres were redispersed by ultrasonic dispersion into 20 mL of absolute ethanol to obtain a suspension of Si0 2 microspheres.
- the above-mentioned impurity-free SiO 2 suspension was added while stirring in a water bath at 80 ° C, and stirred well until a gel was obtained.
- the obtained gel was completely dried in an oven at 100 ° C to obtain a precursor.
- the precursor is placed in a high temperature furnace, pre-fired at 650 ° C for 5 h, cooled to room temperature, and ground; then, placed in a box-type high temperature furnace or tube furnace at 950 ° C in an air atmosphere Calcination for 5 h, natural cooling, and the desired core-shell luminescent material is obtained after removal.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015510598A JP5926449B2 (ja) | 2012-05-08 | 2012-05-08 | コア−シェル構造のケイ酸塩発光材料およびその製造方法 |
PCT/CN2012/075209 WO2013166665A1 (zh) | 2012-05-08 | 2012-05-08 | 核壳结构的硅酸盐发光材料及其制备方法 |
CN201280072761.7A CN104271706A (zh) | 2012-05-08 | 2012-05-08 | 核壳结构的硅酸盐发光材料及其制备方法 |
US14/397,942 US9416308B2 (en) | 2012-05-08 | 2012-05-08 | Core-shell structured silicate luminescent material and preparation method therefor |
EP12876298.6A EP2848675A4 (en) | 2012-05-08 | 2012-05-08 | SILICATE LUMINESCENT MATERIAL WITH A CUR-STRUCTURE STRUCTURE AND PREPARATION METHOD THEREOF |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2012/075209 WO2013166665A1 (zh) | 2012-05-08 | 2012-05-08 | 核壳结构的硅酸盐发光材料及其制备方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013166665A1 true WO2013166665A1 (zh) | 2013-11-14 |
Family
ID=49550071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2012/075209 WO2013166665A1 (zh) | 2012-05-08 | 2012-05-08 | 核壳结构的硅酸盐发光材料及其制备方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9416308B2 (zh) |
EP (1) | EP2848675A4 (zh) |
JP (1) | JP5926449B2 (zh) |
CN (1) | CN104271706A (zh) |
WO (1) | WO2013166665A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116285955A (zh) * | 2023-03-22 | 2023-06-23 | 成都理工大学 | 一种用于湿热环境下的led荧光粉 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106590620A (zh) * | 2016-11-22 | 2017-04-26 | 青岛海信电器股份有限公司 | 一种荧光粉及其制备方法、荧光粉膜片、荧光粉模组结构 |
KR102646578B1 (ko) * | 2021-07-20 | 2024-03-11 | 한국조폐공사 | 적외선 영역 발광 특성을 가지는 형광체 조성물 및 이의 제조 방법 |
CN114514955B (zh) * | 2022-02-14 | 2023-05-23 | 浙江汇能生物股份有限公司 | 一种复合包被二甲酸钾微囊及其制备工艺 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1626615A (zh) * | 2003-11-12 | 2005-06-15 | 日亚化学工业株式会社 | 绿色发光钇硅酸盐荧光体以及使用该荧光体的阴极射线管 |
CN101033398A (zh) * | 2007-03-29 | 2007-09-12 | 兰州大学 | 一种真空紫外光激发的绿色硅酸盐发光材料 |
CN102191033A (zh) * | 2010-03-11 | 2011-09-21 | 海洋王照明科技股份有限公司 | 一种核壳结构荧光材料及其制备方法 |
CN102191055A (zh) * | 2010-03-11 | 2011-09-21 | 海洋王照明科技股份有限公司 | 核壳结构硅酸盐发光材料及其制备方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3943400A (en) | 1971-07-24 | 1976-03-09 | U.S. Philips Corporation | Cathode-ray tube provided with a luminescent silicate |
BE786655A (fr) * | 1971-07-24 | 1973-01-24 | Philips Nv | Tube a rayons cathodiques muni d'un silicate luminescent |
JPS512313A (ja) | 1974-06-24 | 1976-01-09 | Nippon Telegraph & Telephone | Eiseitsushinhoshiki |
JP2514423B2 (ja) | 1989-03-15 | 1996-07-10 | 日亜化学工業株式会社 | 二酸化ケイ素でコ―ティングされた蛍光体の製造方法 |
JP2001181626A (ja) | 1999-12-24 | 2001-07-03 | Sumitomo Chem Co Ltd | 真空紫外線励起発光素子用蛍光体 |
JP2001181627A (ja) | 1999-12-24 | 2001-07-03 | Sumitomo Chem Co Ltd | 真空紫外線励起発光素子用蛍光体 |
RU2242545C1 (ru) | 2003-11-04 | 2004-12-20 | Загуменный Александр Иосифович | Сцинтиляционное вещество (варианты) |
JP4524469B2 (ja) * | 2004-06-03 | 2010-08-18 | Dowaエレクトロニクス株式会社 | 蛍光体粒子およびその製造方法並びにプラズマディスプレイパネル、照明装置およびled |
JP5487636B2 (ja) | 2008-02-18 | 2014-05-07 | 株式会社豊田中央研究所 | 単分散球状無機蛍光体及びその製造方法、並びに、規則配列体 |
DE102009012698A1 (de) * | 2009-03-11 | 2010-09-16 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Partikel mit einer lumineszierenden anorganischen Schale, Verfahren zur Beschichtung von Partikeln sowie deren Verwendung |
EP2554630B1 (en) * | 2010-03-31 | 2014-09-03 | Ocean's King Lighting Science&Technology Co., Ltd. | Double core-shell fluorescent materials and preparation methods thereof |
US8562866B2 (en) | 2010-04-27 | 2013-10-22 | Ocean's King Lighting Science & Technology Co., Ltd. | Preparation method of zinc manganese silicate |
CN104302730A (zh) * | 2012-05-08 | 2015-01-21 | 海洋王照明科技股份有限公司 | 包覆有金属纳米颗粒的硅酸盐发光材料及其制备方法 |
-
2012
- 2012-05-08 EP EP12876298.6A patent/EP2848675A4/en not_active Withdrawn
- 2012-05-08 WO PCT/CN2012/075209 patent/WO2013166665A1/zh active Application Filing
- 2012-05-08 CN CN201280072761.7A patent/CN104271706A/zh active Pending
- 2012-05-08 US US14/397,942 patent/US9416308B2/en active Active
- 2012-05-08 JP JP2015510598A patent/JP5926449B2/ja not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1626615A (zh) * | 2003-11-12 | 2005-06-15 | 日亚化学工业株式会社 | 绿色发光钇硅酸盐荧光体以及使用该荧光体的阴极射线管 |
CN101033398A (zh) * | 2007-03-29 | 2007-09-12 | 兰州大学 | 一种真空紫外光激发的绿色硅酸盐发光材料 |
CN102191033A (zh) * | 2010-03-11 | 2011-09-21 | 海洋王照明科技股份有限公司 | 一种核壳结构荧光材料及其制备方法 |
CN102191055A (zh) * | 2010-03-11 | 2011-09-21 | 海洋王照明科技股份有限公司 | 核壳结构硅酸盐发光材料及其制备方法 |
Non-Patent Citations (2)
Title |
---|
See also references of EP2848675A4 * |
WEN, YAN ET AL.: "Intense Red-Emitting NaYSi04: Eu3+, Mo6+ Phosphors for White Light-Emitting Diodes.", JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 158, no. 8, 15 June 2011 (2011-06-15), pages J250 - J254, XP055172304 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116285955A (zh) * | 2023-03-22 | 2023-06-23 | 成都理工大学 | 一种用于湿热环境下的led荧光粉 |
Also Published As
Publication number | Publication date |
---|---|
CN104271706A (zh) | 2015-01-07 |
EP2848675A1 (en) | 2015-03-18 |
US9416308B2 (en) | 2016-08-16 |
JP5926449B2 (ja) | 2016-05-25 |
EP2848675A4 (en) | 2015-12-02 |
US20150083965A1 (en) | 2015-03-26 |
JP2015516015A (ja) | 2015-06-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Liu et al. | Synthesis and Luminescent Properties of LaAlO3: RE3+ (RE= Tm, Tb) Nanocrystalline Phosphors via a Sol Gel Process | |
CN101760195B (zh) | 硅酸盐蓝色发光材料及其制备方法 | |
WO2013166665A1 (zh) | 核壳结构的硅酸盐发光材料及其制备方法 | |
CN104710982A (zh) | 一种稀土离子共掺杂的铝硅酸盐新型绿光荧光粉及其制备方法 | |
Yang et al. | Synthesis and photoluminescence of Eu3+-or Tb3+-doped Mg2SiO4 nanoparticles prepared by a combined novel approach | |
CN102933684B (zh) | 含有金属颗粒的硅酸锌锰发光材料及其制备方法 | |
CN109370580B (zh) | 一种铋离子激活的钛铝酸盐荧光粉及其制备方法与应用 | |
JP5655141B2 (ja) | 珪酸塩発光材料及びその調製方法 | |
CN101665688B (zh) | 一种超细高亮荧光粉的制备方法 | |
CN105331363B (zh) | 一种磷铝酸盐荧光粉及其制备方法 | |
CN115321579B (zh) | 一种高性能硫氧化物荧光粉的制备方法 | |
CN101892049B (zh) | 用于白光led的单一基质白光荧光粉的制备方法 | |
JP5700306B2 (ja) | 緑色発光材料およびその調製方法 | |
US9605202B2 (en) | Silicate luminescent materials doped with metal nano particles and preparation methods therefor | |
CN102191055A (zh) | 核壳结构硅酸盐发光材料及其制备方法 | |
CN101831296B (zh) | 一种真空紫外激发的绿色硅酸盐荧光粉的制备方法 | |
CN112592711B (zh) | 一种远红光荧光粉及其制备和改性方法 | |
CN108893108A (zh) | 一种双钙钛矿型硅酸盐蓝色荧光粉及其制备方法 | |
CN107603616A (zh) | 一种钒钛酸钡近红外发光材料、制备方法及其应用 | |
CN104830344B (zh) | 一种Er3+,Yb3+共掺YOF红色上转换荧光材料的制备方法 | |
CN106281313A (zh) | 一种硅酸盐荧光粉及其制备方法和应用 | |
CN107794042B (zh) | 一种掺杂稀土元素Sm的磷钨酸盐发光材料及其制备方法 | |
CN104031641B (zh) | 基于水热反应的铝酸盐荧光粉表面包覆方法及其制备的荧光粉 | |
CN110283590B (zh) | 磷酸锂钡蓝绿色荧光粉及其制备方法 | |
CN106634998B (zh) | 一种锰离子掺杂磷酸锶钾红色荧光粉的制备方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12876298 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14397942 Country of ref document: US |
|
REEP | Request for entry into the european phase |
Ref document number: 2012876298 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012876298 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2015510598 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |