JP4124056B2 - 蛍光体粉末の製造方法 - Google Patents
蛍光体粉末の製造方法 Download PDFInfo
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- JP4124056B2 JP4124056B2 JP2003293334A JP2003293334A JP4124056B2 JP 4124056 B2 JP4124056 B2 JP 4124056B2 JP 2003293334 A JP2003293334 A JP 2003293334A JP 2003293334 A JP2003293334 A JP 2003293334A JP 4124056 B2 JP4124056 B2 JP 4124056B2
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims description 99
- 239000000843 powder Substances 0.000 title claims description 85
- 238000004519 manufacturing process Methods 0.000 title claims description 22
- 239000002245 particle Substances 0.000 claims description 137
- 239000002243 precursor Substances 0.000 claims description 30
- 238000010298 pulverizing process Methods 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 26
- 239000002994 raw material Substances 0.000 claims description 17
- 238000000137 annealing Methods 0.000 claims description 13
- 238000002425 crystallisation Methods 0.000 claims description 11
- 230000008025 crystallization Effects 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 6
- 229910052752 metalloid Inorganic materials 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 22
- 239000010410 layer Substances 0.000 description 13
- 239000000203 mixture Substances 0.000 description 13
- 150000001875 compounds Chemical class 0.000 description 11
- 239000013078 crystal Substances 0.000 description 9
- 239000007787 solid Substances 0.000 description 9
- 238000002441 X-ray diffraction Methods 0.000 description 8
- 238000003746 solid phase reaction Methods 0.000 description 8
- 238000005118 spray pyrolysis Methods 0.000 description 8
- 230000005284 excitation Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 230000007547 defect Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 238000004220 aggregation Methods 0.000 description 4
- 230000002776 aggregation Effects 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 150000004767 nitrides Chemical class 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 239000012798 spherical particle Substances 0.000 description 4
- 238000005979 thermal decomposition reaction Methods 0.000 description 4
- 229910020068 MgAl Inorganic materials 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 3
- 239000012159 carrier gas Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000011342 resin composition Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 229910052688 Gadolinium Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910004283 SiO 4 Inorganic materials 0.000 description 2
- 229910052771 Terbium Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 229910001940 europium oxide Inorganic materials 0.000 description 2
- AEBZCFFCDTZXHP-UHFFFAOYSA-N europium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Eu+3].[Eu+3] AEBZCFFCDTZXHP-UHFFFAOYSA-N 0.000 description 2
- JVYYYCWKSSSCEI-UHFFFAOYSA-N europium(3+);trinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[Eu+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O JVYYYCWKSSSCEI-UHFFFAOYSA-N 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- MFUVDXOKPBAHMC-UHFFFAOYSA-N magnesium;dinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MFUVDXOKPBAHMC-UHFFFAOYSA-N 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 238000003980 solgel method Methods 0.000 description 2
- 150000004763 sulfides Chemical class 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- 229910052727 yttrium Inorganic materials 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 description 1
- XNDZQQSKSQTQQD-UHFFFAOYSA-N 3-methylcyclohex-2-en-1-ol Chemical compound CC1=CC(O)CCC1 XNDZQQSKSQTQQD-UHFFFAOYSA-N 0.000 description 1
- NGDQQLAVJWUYSF-UHFFFAOYSA-N 4-methyl-2-phenyl-1,3-thiazole-5-sulfonyl chloride Chemical compound S1C(S(Cl)(=O)=O)=C(C)N=C1C1=CC=CC=C1 NGDQQLAVJWUYSF-UHFFFAOYSA-N 0.000 description 1
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 229910015999 BaAl Inorganic materials 0.000 description 1
- -1 BaMgAl 10 O 17 : Eu Chemical compound 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910003668 SrAl Inorganic materials 0.000 description 1
- 229910002367 SrTiO Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 150000001540 azides Chemical class 0.000 description 1
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 239000007806 chemical reaction intermediate Substances 0.000 description 1
- 150000003841 chloride salts Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007716 flux method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 239000011802 pulverized particle Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 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
- 239000010703 silicon Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical compound [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
- C09K11/7734—Aluminates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/14—Methods for preparing oxides or hydroxides in general
- C01B13/34—Methods for preparing oxides or hydroxides in general by oxidation or hydrolysis of sprayed or atomised solutions
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/30—Compounds containing rare earth metals and at least one element other than a rare earth metal, oxygen or hydrogen, e.g. La4S3Br6
- C01F17/32—Compounds containing rare earth metals and at least one element other than a rare earth metal, oxygen or hydrogen, e.g. La4S3Br6 oxide or hydroxide being the only anion, e.g. NaCeO2 or MgxCayEuO
- C01F17/34—Aluminates, e.g. YAlO3 or Y3-xGdxAl5O12
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—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
- C09K11/7784—Chalcogenides
- C09K11/7787—Oxides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/54—Screens on or from which an image or pattern is formed, picked-up, converted, or stored; Luminescent coatings on vessels
- H01J1/62—Luminescent screens; Selection of materials for luminescent coatings on vessels
- H01J1/63—Luminescent screens; Selection of materials for luminescent coatings on vessels characterised by the luminescent material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/38—Devices for influencing the colour or wavelength of the light
- H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
- H01J61/44—Devices characterised by the luminescent material
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/60—Compounds characterised by their crystallite size
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Luminescent Compositions (AREA)
- Gas-Filled Discharge Tubes (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
硝酸バリウム、硝酸ユーロピウム六水和物、硝酸マグネシウム六水和物、硝酸アルミニウム九水和物を、モル比で0.9:0.1:1:10になるように秤量して純水に溶解し、金属濃度が0.72モル/リットルの原料溶液を調製した。
実施例1において前記ボールミル粉砕処理を2時間行って得られた粉末を、バッチ炉で、4%の水素を含む窒素ガス中で1時間アニーリングした。アニーリング温度による発光輝度(254nm紫外線励起)と平均粒径の変化を図3に示した。図3より、アニーリングによって粒径を大きく変化させることなく、発光輝度を向上させることができ、ほぼ粉砕前と同等の発光輝度を示す微細な粉末が得られることがわかる。図4に、アニーリング温度1300℃で得られた、平均粒径1.7μmのBa0.9Eu0.1MgAl10O17粉末のSEM写真を示す。X線回折による結晶子径は約300nmであった。
炭酸バリウム、塩基性水酸化マグネシウム、酸化アルミニウム、酸化ユーロピウムおよび少量のフッ化アルミニウムを粉砕混合し、バッチ炉を用い、1550℃で3時間、4%の水素を含む窒素ガス中で固相反応させて、塊状のBa0.9Eu0.1MgAl10O17を得た。この生成物をボールミルで30時間粉砕し、その後、バッチ炉を用い、4%の水素を含む窒素ガス中、1300℃で1時間アニーリングした。得られた粉末の平均粒径は約2.5μmであった。254nm紫外線励起による発光輝度を測定すると、実施例2に示した粉末の粒径より大きいにもかかわらず、その発光輝度は実施例2の粉末の70%程度でしかなかった。
硝酸イットリウムおよび硝酸ユーロピウム六水和物を、モル比で1.84:0.16になるように秤量して純水に溶解し、金属濃度が0.8モル/リットルの原料溶液を調製した。
酸化イットリウム、酸化ユーロピウムおよび少量の炭酸リチウムを粉砕混合し、バッチ炉を用い、1400℃で5時間、空気中で固相反応させて、塊状のY1.84Eu0.16O3を得た。この生成物をボールミルで30時間粉砕し、その後、バッチ炉を用い、空気中、1100℃で1時間アニーリングした。得られた粉末の平均粒径は約3.0μmであった。波長254nmの紫外線励起による発光輝度を測定すると、実施例3に示した粉末の粒径より大きいにもかかわらず、その発光輝度は実施例3に示した粉末の80%程度しかなかった。
Claims (3)
- 蛍光体の構成成分となる金属元素および/または半金属元素を含む原料溶液を微細な液滴とし、この液滴を500〜1800℃の温度で加熱分解してX線的に非晶質の、中空の前駆体粒子および/または多孔質の前駆体粒子を生成し、この前駆体粒子を800〜1800℃の温度で0.5〜24時間加熱することによりその中空または多孔質の形態を保持したまま結晶化させ、結晶化した粒子を所定の粒度になるまで粉砕することを特徴とする高結晶性蛍光体粉末の製造方法。
- 前記粉砕で得られた粉末に更にアニーリング処理を施す請求項1に記載の高結晶性蛍光体粉末の製造方法。
- 前記結晶化した粒子が、結晶子径が50nm以上の結晶子からなる多結晶体である、請求項1または2に記載の高結晶性蛍光体粉末の製造方法。
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JP2003293334A JP4124056B2 (ja) | 2003-08-14 | 2003-08-14 | 蛍光体粉末の製造方法 |
US10/903,281 US7214330B2 (en) | 2003-08-14 | 2004-07-30 | Method of manufacturing phosphor powder, phosphor powder, and phosphor composition |
KR1020040063185A KR100567115B1 (ko) | 2003-08-14 | 2004-08-11 | 형광체 분말의 제조방법, 형광체 분말 및 형광체 조성물 |
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DE20308495U1 (de) * | 2003-05-28 | 2004-09-30 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Konversions-LED |
KR100674831B1 (ko) * | 2004-11-05 | 2007-01-25 | 삼성전기주식회사 | 백색 발광 다이오드 패키지 및 그 제조방법 |
US7824573B2 (en) | 2005-04-01 | 2010-11-02 | Mitsubishi Chemical Corporation | Alloy powder for material of inorganic functional material precursor and phosphor |
NL1029291C2 (nl) * | 2005-06-20 | 2006-12-22 | Next Generation B V | Toename van lichtintensiteit van fosforescerende pigment door middel van licht uitkoppeling met holle glasparels. |
NL1029292C2 (nl) * | 2005-06-20 | 2006-12-22 | Next Generation B V | Licht en warme winning met behulp van een compositie van een vloeistof en vaste stof die door zijn unieke samenstelling licht en warmte kan vasthouden. |
US7504969B2 (en) * | 2006-07-11 | 2009-03-17 | Data Domain, Inc. | Locality-based stream segmentation for data deduplication |
DE102006037730A1 (de) * | 2006-08-11 | 2008-02-14 | Merck Patent Gmbh | LED-Konversionsleuchtstoffe in Form von keramischen Körpern |
KR100777290B1 (ko) * | 2006-10-24 | 2007-11-20 | 엘지전자 주식회사 | 전계 발광 소자의 제조방법 및 그 그린 시트 |
KR20090044800A (ko) * | 2007-11-01 | 2009-05-07 | 삼성전기주식회사 | 인산계 나노 형광체 및 나노 형광체 제조 방법 |
WO2010099665A1 (zh) * | 2009-03-06 | 2010-09-10 | 海洋王照明科技股份有限公司 | 三价铥激活的氧化物发光材料及其制备方法 |
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JP2016027065A (ja) * | 2012-12-04 | 2016-02-18 | 旭硝子株式会社 | 波長変換材料、波長変換機能付き基材、太陽電池用封止材および太陽電池モジュール |
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JP2000336353A (ja) | 1999-05-28 | 2000-12-05 | Kasei Optonix Co Ltd | アルミン酸塩蛍光体の製造方法 |
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KR20050016228A (ko) | 2005-02-21 |
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