WO2013146790A1 - 深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体及びその製造方法 - Google Patents
深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体及びその製造方法 Download PDFInfo
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- WO2013146790A1 WO2013146790A1 PCT/JP2013/058815 JP2013058815W WO2013146790A1 WO 2013146790 A1 WO2013146790 A1 WO 2013146790A1 JP 2013058815 W JP2013058815 W JP 2013058815W WO 2013146790 A1 WO2013146790 A1 WO 2013146790A1
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- Prior art keywords
- light
- emitting
- magnesium
- phosphor
- red light
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- MCSXGCZMEPXKIW-UHFFFAOYSA-N 3-hydroxy-4-[(4-methyl-2-nitrophenyl)diazenyl]-N-(3-nitrophenyl)naphthalene-2-carboxamide Chemical compound Cc1ccc(N=Nc2c(O)c(cc3ccccc23)C(=O)Nc2cccc(c2)[N+]([O-])=O)c(c1)[N+]([O-])=O MCSXGCZMEPXKIW-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- GNZXSJGLMFKMCU-UHFFFAOYSA-N [Mg+2].[O-][Ge](F)=O.[O-][Ge](F)=O Chemical compound [Mg+2].[O-][Ge](F)=O.[O-][Ge](F)=O GNZXSJGLMFKMCU-UHFFFAOYSA-N 0.000 title abstract description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 69
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 68
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 67
- 239000000203 mixture Substances 0.000 claims abstract description 35
- 150000002222 fluorine compounds Chemical class 0.000 claims abstract description 13
- 150000002697 manganese compounds Chemical class 0.000 claims abstract description 13
- 150000002291 germanium compounds Chemical class 0.000 claims abstract description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 60
- OSTULDXPMCGEOM-UHFFFAOYSA-N [O-][Ge](F)=O.[O-][Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.[Mg+2].P Chemical compound [O-][Ge](F)=O.[O-][Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.[Mg+2].P OSTULDXPMCGEOM-UHFFFAOYSA-N 0.000 claims description 54
- 239000000843 powder Substances 0.000 claims description 50
- 239000004065 semiconductor Substances 0.000 claims description 34
- 238000002441 X-ray diffraction Methods 0.000 claims description 18
- 238000010304 firing Methods 0.000 claims description 17
- 229910052749 magnesium Inorganic materials 0.000 claims description 16
- 239000011777 magnesium Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- 229910005793 GeO 2 Inorganic materials 0.000 claims description 12
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 12
- 229910052788 barium Inorganic materials 0.000 claims description 9
- 229910052791 calcium Inorganic materials 0.000 claims description 9
- 229910052712 strontium Inorganic materials 0.000 claims description 9
- 239000011164 primary particle Substances 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- LWNCNSOPVUCKJL-UHFFFAOYSA-N [Mg].[P] Chemical compound [Mg].[P] LWNCNSOPVUCKJL-UHFFFAOYSA-N 0.000 claims description 2
- 229940126062 Compound A Drugs 0.000 claims 1
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 claims 1
- 125000001153 fluoro group Chemical group F* 0.000 claims 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims 1
- 239000002994 raw material Substances 0.000 description 23
- 229920005989 resin Polymers 0.000 description 16
- 239000011347 resin Substances 0.000 description 16
- 239000000758 substrate Substances 0.000 description 10
- 239000011575 calcium Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium oxide Inorganic materials O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 7
- 239000011572 manganese Substances 0.000 description 7
- 239000000470 constituent Substances 0.000 description 6
- 238000000295 emission spectrum Methods 0.000 description 6
- PVADDRMAFCOOPC-UHFFFAOYSA-N oxogermanium Chemical compound [Ge]=O PVADDRMAFCOOPC-UHFFFAOYSA-N 0.000 description 6
- 239000012071 phase Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 3
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 3
- 239000000347 magnesium hydroxide Substances 0.000 description 3
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 3
- XMWCXZJXESXBBY-UHFFFAOYSA-L manganese(ii) carbonate Chemical compound [Mn+2].[O-]C([O-])=O XMWCXZJXESXBBY-UHFFFAOYSA-L 0.000 description 3
- 239000011812 mixed powder Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 229920002050 silicone resin Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000012808 vapor phase Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 101100513612 Microdochium nivale MnCO gene Proteins 0.000 description 2
- 229910003564 SiAlON Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 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
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011656 manganese carbonate Substances 0.000 description 2
- 235000006748 manganese carbonate Nutrition 0.000 description 2
- 229940093474 manganese carbonate Drugs 0.000 description 2
- 229910000016 manganese(II) carbonate Inorganic materials 0.000 description 2
- 229910001512 metal fluoride Inorganic materials 0.000 description 2
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- BHHYHSUAOQUXJK-UHFFFAOYSA-L zinc fluoride Chemical compound F[Zn]F BHHYHSUAOQUXJK-UHFFFAOYSA-L 0.000 description 2
- 229910002704 AlGaN Inorganic materials 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229910020068 MgAl Inorganic materials 0.000 description 1
- 229910017639 MgSi Inorganic materials 0.000 description 1
- VIGXZGYQDRMJTC-UHFFFAOYSA-N O[Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.P.P Chemical compound O[Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.P.P VIGXZGYQDRMJTC-UHFFFAOYSA-N 0.000 description 1
- 229910004283 SiO 4 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910001361 White metal Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- IWBUYGUPYWKAMK-UHFFFAOYSA-N [AlH3].[N] Chemical compound [AlH3].[N] IWBUYGUPYWKAMK-UHFFFAOYSA-N 0.000 description 1
- VQUSHWOQWCGCGX-UHFFFAOYSA-N [O-][Ge](F)=O.[O-][Ge](F)=O.[O-][Ge](F)=O.[O-][Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.[Mg+2].[Mg+2].P Chemical compound [O-][Ge](F)=O.[O-][Ge](F)=O.[O-][Ge](F)=O.[O-][Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.O[Ge](F)=O.[Mg+2].[Mg+2].P VQUSHWOQWCGCGX-UHFFFAOYSA-N 0.000 description 1
- OYLGJCQECKOTOL-UHFFFAOYSA-L barium fluoride Chemical compound [F-].[F-].[Ba+2] OYLGJCQECKOTOL-UHFFFAOYSA-L 0.000 description 1
- 229910001632 barium fluoride Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000007580 dry-mixing Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- HHFCFXJTAZTLAO-UHFFFAOYSA-N fluorogermanium Chemical compound [Ge]F HHFCFXJTAZTLAO-UHFFFAOYSA-N 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- -1 germanium alkoxide Chemical class 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 229940099596 manganese sulfate Drugs 0.000 description 1
- 239000011702 manganese sulphate Substances 0.000 description 1
- 235000007079 manganese sulphate Nutrition 0.000 description 1
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 description 1
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- FVRNDBHWWSPNOM-UHFFFAOYSA-L strontium fluoride Chemical compound [F-].[F-].[Sr+2] FVRNDBHWWSPNOM-UHFFFAOYSA-L 0.000 description 1
- 229910001637 strontium fluoride Inorganic materials 0.000 description 1
- VJHDVMPJLLGYBL-UHFFFAOYSA-N tetrabromogermane Chemical compound Br[Ge](Br)(Br)Br VJHDVMPJLLGYBL-UHFFFAOYSA-N 0.000 description 1
- CUDGTZJYMWAJFV-UHFFFAOYSA-N tetraiodogermane Chemical compound I[Ge](I)(I)I CUDGTZJYMWAJFV-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000010969 white metal Substances 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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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
- C09K11/66—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing germanium, tin or lead
- C09K11/664—Halogenides
- C09K11/665—Halogenides with alkali or alkaline earth metals
-
- 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
- C09K11/66—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing germanium, tin or lead
- C09K11/661—Chalcogenides
- C09K11/663—Chalcogenides with alkaline earth metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73251—Location after the connecting process on different surfaces
- H01L2224/73265—Layer and wire connectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
Definitions
- the present invention relates to a deep red light emitting magnesium fluorogermanate phosphor and a method for producing the same.
- the present invention also relates to a light emitting device using a deep red light emitting magnesium fluorogermanate phosphor as a red light source.
- a magnesium fluorogermanate phosphor represented by the formula 3.5MgO ⁇ 0.5MgF 2 ⁇ GeO 2 : Mn 4+ is known as a deep red light emitting phosphor. This phosphor is used as a red light source of a fluorescent mercury lamp (Non-Patent Document 1).
- Patent Document 1 describes a deep red light emitting fluorogermanate phosphor represented by the following formula.
- k is a real number of 2.8 to 5
- x is a real number of 0.1 to 0.7
- y is a real number of 0.005 to 0.015
- A is calcium.
- magnesium oxide, metal fluoride, germanium oxide, and a manganese precursor compound are uniformly distributed so as to have a molar ratio of (kx): x: 1: y.
- Patent Document 2 the composition ratio of the constituent element of the phosphor fluorogermanate phosphor represented by the formula of 3.5MgO.0.5MgF 2 .GeO 2 : Mn 4+ is changed, or the constituent element is changed to another element. It is described that a deep red light emitting phosphor with improved light emission efficiency when excited with light in the near ultraviolet to visible region having a wavelength of 350 to 500 nm can be obtained by substituting for. In this patent document, a phosphor represented by the following formula is described as a deep red light emitting magnesium fluorogermanate phosphor in which the composition ratio of constituent elements is changed.
- an object of the present invention is to provide a method capable of industrially advantageously producing a deep red light emitting magnesium fluorogermanate phosphor having high emission intensity when excited by light in the near ultraviolet region. It is in.
- Another object of the present invention is to provide a deep red light emitting magnesium fluorogermanate phosphor having high emission intensity when excited by light in the near ultraviolet region, and a light emitting device using the phosphor as a red light source. There is to do.
- the inventor of the present invention has disclosed a deep red light emitting property that emits light having a maximum peak in a wavelength range of 640 to 680 nm when a mixture containing magnesium oxide, a fluorine compound, a germanium compound, and a manganese compound is fired and excited with light having a wavelength of 400 nm.
- a magnesium fluorogermanate phosphor if a magnesium oxide fine powder having a BET specific surface area in the range of 5 to 200 m 2 / g is used as magnesium oxide, high emission intensity is obtained when excited with light having a wavelength of 400 nm.
- the present inventors have found that a phosphor exhibiting the following can be obtained.
- the present invention provides light emission having a maximum peak in the wavelength range of 640 to 680 nm when excited by light having a wavelength of 400 nm, obtained by firing a mixture containing magnesium oxide, fluorine compound, germanium compound, and manganese compound.
- a deep red luminescent fluorogermanic acid phosphor characterized in that the magnesium oxide is a fine powder of magnesium oxide having a BET specific surface area in the range of 5 to 200 m 2 / g. Magnesium phosphor.
- Preferred embodiments of the deep red light-emitting magnesium fluorogermanate phosphor of the present invention are as follows. (1) The diffraction angle 2 ⁇ measured using CuK ⁇ rays having an incident angle of ⁇ has a maximum X-ray diffraction line peak in the range of 35.2 to 36.0 degrees. (2) Magnesium oxide fine powder is fine powder containing cubic primary particles. (3) The magnesium oxide fine powder is a fine powder having a purity of 99.9% by mass or more. (4) Magnesium oxide fine powder is a fine powder obtained by contacting magnesium vapor and oxygen in a gas phase to oxidize magnesium.
- the deep red light-emitting magnesium fluorogermanate phosphor is a phosphor having a composition represented by the following formula (I).
- A is at least one element selected from the group consisting of Mg, Ca, Sr, Ba and Zn
- x is a number in the range of 1.5 to 4.5
- y Is a number in the range of 0.050 to 2.5
- z is a number in the range of 0.0010 to 0.10, in particular a number in the range of 0.0050 to 0.040.
- a red light-emitting phosphor of a light-emitting device including a semiconductor light-emitting element and a red light-emitting phosphor that emits red light when excited by light generated in the semiconductor light-emitting element.
- the present invention includes a step of firing a mixture containing magnesium oxide, a fluorine compound, a germanium compound, and a manganese compound, and includes a step of emitting light having a maximum peak in a wavelength range of 640 to 680 nm when excited with light having a wavelength of 400 nm.
- the preferable aspect of the manufacturing method of the deep red light emission magnesium fluorogermanate fluorescent substance of this invention is as follows.
- the deep red light-emitting magnesium fluorogermanate phosphor has a maximum X-ray diffraction line peak in a diffraction angle 2 ⁇ measured using CuK ⁇ rays having an incident angle ⁇ of 35.2 to 36.0 degrees. It is the fluorescent substance which has.
- Magnesium oxide fine powder is fine powder containing cubic primary particles.
- the magnesium oxide fine powder is a fine powder having a purity of 99.9% by mass or more.
- Magnesium oxide fine powder is a fine powder obtained by contacting magnesium vapor and oxygen in a gas phase to oxidize magnesium.
- the present invention is also a light-emitting device including a semiconductor light-emitting element that emits light having a wavelength of 350 to 430 nm and the deep red light-emitting magnesium fluorogermanate phosphor of the present invention.
- the present invention further provides a semiconductor light emitting device that emits light having a wavelength of 350 to 430 nm, the deep red light emitting magnesium fluorogermanate phosphor of the present invention, and emission of blue light when excited by light generated in the semiconductor light emitting device.
- a light-emitting device including a blue light-emitting phosphor that exhibits green light and a green light-emitting phosphor that emits green light when excited by light generated in the semiconductor light-emitting element.
- the present invention further provides a semiconductor light emitting device that emits blue light, the deep red light emitting magnesium fluorogermanate phosphor of the present invention, and green light emission when excited by light generated in the semiconductor light emitting device.
- a semiconductor light emitting device that emits blue light
- the deep red light emitting magnesium fluorogermanate phosphor of the present invention and green light emission when excited by light generated in the semiconductor light emitting device.
- light-emitting devices that include green-emitting phosphors.
- the deep red light-emitting magnesium fluorogermanate phosphor of the present invention exhibits high light emission intensity, and therefore can be advantageously used as a red light source for light-emitting devices such as white LEDs and fluorescent lamps.
- the deep red light emitting magnesium fluorogermanate phosphor of the present invention is obtained by firing a mixture containing magnesium oxide, a fluorine compound, a germanium compound, and a manganese compound.
- magnesium oxide fine powder having a BET specific surface area of 5 to 200 m 2 / g, preferably 5 to 100 m 2 / g, is used as the raw material magnesium oxide.
- the magnesium oxide fine powder is preferably a fine powder containing cubic primary particles.
- the content of the primary particles in the cubic shape is preferably at least 80% or more based on the number of primary particles.
- the purity of the magnesium oxide fine powder is preferably 99.9% by mass or more, and more preferably 99.95% by mass.
- the magnesium oxide fine powder can be produced by a gas phase method.
- the vapor phase method is a method for producing magnesium oxide fine powder by contacting magnesium vapor and oxygen in a gas phase to oxidize magnesium, and this vapor phase method is already known.
- raw materials other than magnesium oxide are not particularly limited.
- the fluorine compound is preferably a divalent metal fluoride.
- the fluorine compound include magnesium fluoride, calcium fluoride, strontium fluoride, barium fluoride, and zinc fluoride. These fluorine compounds may be used individually by 1 type, and may be used in combination of 2 or more type.
- the fluorine compound preferably has a BET specific surface area in the range of 0.01 to 50 m 2 / g.
- the purity of the fluorine compound is preferably 98% by mass or more.
- germanium compounds include germanium oxide, germanium bromide, germanium iodide and germanium alkoxide.
- the germanium compound is preferably germanium oxide.
- Germanium oxide preferably has a BET specific surface area of 0.01 to 50 m 2 / g.
- the purity of germanium oxide is preferably 99% by mass or more.
- the manganese compound is preferably a compound having a valence of manganese of 2 to 4. Examples of the manganese compound include manganese carbonate, manganese sulfate, manganese nitrate, and manganese oxide (MnO, Mn 3 O 4 , Mn 2 O 3 , MnO 2 ).
- the manganese compound preferably has a BET specific surface area in the range of 0.01 to 50 m 2 / g.
- the purity of the manganese compound is preferably 99% by mass or more.
- the mixing ratio of magnesium oxide (MgO), fluorine compound (AF 2 ), germanium compound (GeX), and manganese compound (MnX) is 1.5 to 4.5 as a molar ratio of MgO: AF 2 : GeX: MnX: It is preferably in the range of 0.050-2.5: 1: 0.0010-0.10, 3.0-4.3: 0.10-1.0: 1: 0.0050-0.040 It is especially preferable that it is in the range.
- any of a dry mixing method and a wet mixing method can be used.
- the wet mixing method it is preferable to use water, alcohol or a mixture thereof as a solvent.
- a stirring mixer, a ball mill, or a rocking mill can be used.
- a deep red luminescent magnesium fluorogermanate phosphor is produced.
- the firing temperature of the raw material mixture is generally in the range of 1000 to 1300 ° C., preferably in the range of 1050 to 1250 ° C.
- the firing of the raw material mixture is preferably performed in an air atmosphere.
- the firing time of the raw material mixture is generally in the range of 1 to 100 hours, preferably in the range of 1 to 30 hours. Firing may be performed twice or more.
- the fired product obtained by firing is preferably a deep red light-emitting magnesium fluorogermanate phosphor having a composition represented by the following formula (I).
- A is at least one element selected from the group consisting of Mg, Ca, Sr, Ba and Zn
- x is in the range of 1.5 to 4.5, particularly 3.0 to A number in the range of 4.3
- y is a number in the range of 0.050 to 2.5, especially in the range of 0.10 to 1.0
- z is in the range of 0.0010 to 0.10, in particular The number is in the range of 0.0050 to 0.040.
- the fired product obtained by firing is a deep red light emitting magnesium fluorogermanate phosphor. That is, the deep red light emitting magnesium fluorogermanate phosphor exhibits a maximum emission peak generally in the wavelength range of 640 to 680 nm in the emission spectrum when excited with light having a wavelength of 400 nm.
- the deep red luminescent magnesium magnesium fluorogermanate phosphor generally has a maximum diffraction angle 2 ⁇ in the range of 35.2 to 36.0 degrees in the X-ray diffraction pattern measured using CuK ⁇ rays with an incident angle of ⁇ . X-ray diffraction line peaks are shown.
- the reason why the emission intensity of the obtained deep red light-emitting magnesium fluorogermanate phosphor is improved by using magnesium oxide fine powder having a large BET specific surface area as the raw material magnesium oxide is the most present in the raw material mixture.
- a fine powder having a large BET specific surface area and high reactivity for magnesium oxide the reaction proceeds uniformly during the firing of the raw material mixture, the composition of the resulting phosphor becomes uniform, and the amount of impurities mixed in is reduced. This is thought to be due to a decrease.
- the deep red light-emitting magnesium fluorogermanate phosphor of the present invention has a particularly small amount of magnesium oxide. It can be confirmed from the X-ray diffraction pattern that the mixed amount of magnesium oxide is small.
- the deep red light emitting magnesium fluorogermanate phosphor of the present invention has a ratio of the maximum X-ray diffraction line peak value caused by magnesium oxide to the maximum X-ray diffraction line peak value caused by the phosphor (the latter / the former). Usually, it is 0.6 or less.
- the maximum X-ray diffraction line peak attributed to the phosphor is in the range of 35.2 to 36.0 degrees at a diffraction angle 2 ⁇ .
- the maximum X-ray diffraction line peak resulting from magnesium oxide is in the range of 42.7 to 43.2 degrees at a diffraction angle 2 ⁇ .
- the deep red light emitting magnesium fluorogermanate phosphor of the present invention has a red light emitting fluorescence of a light emitting device including a semiconductor light emitting element and a red light emitting phosphor that emits red light when excited by light generated in the semiconductor light emitting element. It can be advantageously used as a body.
- a light emitting device using the deep red light emitting magnesium fluorogermanate phosphor of the present invention will be described with reference to FIG.
- FIG. 1 is a cross-sectional view of an example of a white LED using the deep red light emitting magnesium fluorogermanate phosphor of the present invention as a red light source.
- a white LED includes a substrate 1, a semiconductor light emitting device 3 fixed on the substrate 1 with an adhesive 2, a pair of electrodes 4a and 4b formed on the substrate 1, a semiconductor light emitting device 3 and an electrode 4a.
- lead wires 5a and 5b electrically connecting the semiconductor light emitting element 3, a resin layer 6 covering the semiconductor light emitting element 3, a phosphor layer 7 provided on the resin layer 6, and the resin layer 6 and the phosphor layer 7
- the light reflecting material 8 that covers the surroundings, and conductive wires 9a and 9b for electrically connecting the electrodes 4a and 4b and an external power source (not shown).
- the substrate 1 preferably has high insulation and high thermal conductivity.
- the substrate 1 include a substrate formed from a ceramic such as alumina or nitrogen aluminum, and a substrate formed from a resin material in which inorganic particles such as metal oxide or glass are dispersed.
- the semiconductor light emitting element 3 preferably emits light having a wavelength of 350 to 430 nm by applying electric energy.
- an AlGaN-based semiconductor light emitting element can be cited.
- the resin layer 6 is formed from a transparent resin. Examples of the transparent resin that forms the resin layer 6 include an epoxy resin and a silicone resin.
- the phosphor layer 7 is formed of a mixture in which a blue light-emitting phosphor, a green light-emitting phosphor, and a red light-emitting phosphor are dispersed in glass or a transparent resin such as an epoxy resin or a silicone resin.
- the red light emitting phosphor includes the deep red light emitting magnesium fluorogermanate phosphor of the present invention. There are no particular limitations on the blue-emitting phosphor and the green-emitting phosphor.
- blue-emitting phosphors examples include (Ba, Sr, Ca) 3 MgSi 2 O 8 : Eu, (Ba, Sr, Ca) MgAl 10 O 17 : Eu, (Ba, Sr, Mg, Ca) 10 (PO 4 ) 6 (Cl, F) 2 : Eu.
- green light emitting phosphors include (Ca, Sr, Ba) 2 SiO 4 : Eu 2+ , BaMgAl 10 O 17 : Eu 2+ , Mn 2+ , ⁇ -SiAlON: Eu 2+ , ⁇ -SiAlON: Eu 2+ and ZnS: Cu, Al.
- the light reflecting material 8 improves visible light emission efficiency by reflecting the visible light generated in the phosphor layer 7 toward the outside.
- the material for forming the light reflecting material 8 include metals such as Al, Ni, Fe, Cr, Ti, Cu, Rh, Ag, Au, and Pt, alumina, zirconia, titania, magnesia, zinc oxide, calcium carbonate, and the like.
- examples thereof include a resin material in which a white metal compound and a white pigment are dispersed.
- the semiconductor light emitting element 3 when a voltage is applied to the electrodes 4a and 4b through the conductive wires 9a and 9b, the semiconductor light emitting element 3 emits light, and emitted light having a peak in a wavelength range of 350 to 430 nm is generated.
- the emitted light excites each color emitting phosphor in the phosphor layer 7 to generate blue, green and red visible lights.
- White LED can be manufactured as follows, for example. Electrodes 4a and 4b are formed on the substrate 1 in a predetermined pattern. Next, after fixing the semiconductor light emitting element 3 with the adhesive 2 on the substrate 1, the lead wires 5a and 5b for electrically connecting the semiconductor light emitting element 3 and the electrodes 4a and 4b are formed by a method such as wire bonding. Form. Next, after fixing the light reflecting material 8 around the semiconductor light emitting element 3, a transparent resin is poured onto the semiconductor light emitting element 3, and the transparent resin is solidified to form the resin layer 6.
- a red LED can be obtained by dispersing only the deep red light-emitting magnesium fluorogermanate phosphor in the phosphor layer 7 of the white LED.
- a blue light emitting semiconductor light emitting element is used in place of the semiconductor light emitting element 3, and a deep red light emitting magnesium fluorogermanate phosphor and a green light emitting phosphor are dispersed in the phosphor layer 7 to obtain a white LED. It can.
- the blue light emitting semiconductor light emitting element preferably emits blue light having a wavelength of 440 to 480 nm by application of electric energy.
- Example 1 Magnesium oxide (MgO) fine powder having a BET specific surface area of 8 m 2 / g and a purity of 99.98% by mass (produced by a vapor phase method, content of cubic primary particles: 90%), magnesium fluoride (MgF 2 ) powder (BET specific surface area: 0.02 m 2 / g, purity: 99 mass%), germanium oxide (GeO 2 ) powder (BET specific surface area: 0.06 m 2 / g, purity: 99.9 mass%) ), Manganese carbonate (MnCO 3 ) powder (BET specific surface area: 0.06 m 2 / g, purity: 99.9 mass%), respectively, the molar ratio of MgO: MgF 2 : GeO 2 : MnCO 3 is 3.5: Weighed at a ratio of 0.5: 1: 0.015.
- Each raw material powder weighed was put into ethanol, mixed using a rocking mill, and then dried at a temperature of 120 ° C. for several hours to obtain a raw material mixture. After the obtained raw material mixture was crushed in a mortar, the raw material mixture was put in a crucible made of aluminum oxide and fired at a temperature of 1100 ° C. for 3 hours to obtain 3.5 MgO ⁇ 0.5MgF 2 ⁇ GeO 2 : 0.00.
- a deep red light-emitting magnesium fluorogermanate phosphor represented by the formula 015Mn 4+ was produced.
- the obtained phosphor had a maximum X-ray diffraction line peak of 35 at a diffraction angle 2 ⁇ . It was confirmed to have a maximum emission peak in the wavelength range of 640 to 680 nm with a range of .2 to 36.0 degrees.
- the deep red light-emitting magnesium fluorogermanate phosphor of the sample is irradiated with ultraviolet light having a wavelength of 400 nm using an Xe lamp, and an emission spectrum is measured.
- Example 2 A deep red light-emitting magnesium fluorogermanate phosphor was manufactured in the same manner as in Example 1 except that each raw material powder charged in ethanol was mixed using a ball mill.
- Example 3 A deep red light-emitting magnesium fluorogermanate phosphor was manufactured in the same manner as in Example 1 except that the raw material mixture was fired at a temperature of 1150 ° C. for 3 hours.
- Example 4 A deep red light-emitting magnesium fluorogermanate phosphor was manufactured in the same manner as in Example 1 except that the raw material mixture was fired at a temperature of 1200 ° C. for 3 hours.
- Example 5 The deep red light-emitting fluorogermanium was prepared in the same manner as in Example 1 except that each raw material powder charged in ethanol was mixed using a ball mill and the raw material mixture was calcined at 1200 ° C. for 3 hours. A magnesium acid phosphor was produced.
- Example 1 Example 1 except that magnesium oxide powder (obtained by firing magnesium hydroxide) having a BET specific surface area of 0.4 m 2 / g and a purity of 99% by mass was used in place of the magnesium oxide fine powder. The same operation as described above was performed to produce a deep red light-emitting magnesium fluorogermanate phosphor.
- magnesium oxide powder obtained by firing magnesium hydroxide having a BET specific surface area of 0.4 m 2 / g and a purity of 99% by mass was used, and the raw material mixture was fired.
- a deep red light-emitting magnesium fluorogermanate phosphor was manufactured in the same manner as in Example 1 except that the operation was performed at a temperature of 1200 ° C. for 3 hours.
- Table 1 shows the mixing method of the raw material powders of Examples 1 to 5 and Comparative Examples 1 and 2, firing conditions of the raw material mixture, and the intensity of the maximum emission peak of the obtained deep red light emitting magnesium fluorogermanate phosphor. Indicates.
- the intensity of the maximum emission peak is expressed as a relative value with the intensity of the maximum emission peak of the phosphor obtained in Comparative Example 1 being 100.
- the maximum X-ray resulting from magnesium oxide with respect to the maximum X-ray-diffraction-line peak value resulting from the deep red light emission magnesium fluorogermanate fluorescent substance computed from the X-ray-diffraction pattern The ratio of diffraction line peak values (the latter / the former) is shown.
- Examples 1 to 5 Magnesium oxide fine powder (manufactured by a gas phase method) having a BET specific surface area of 8 m 2 / g was used as magnesium oxide.
- Comparative Examples 1 and 2 Magnesium oxide powder having a BET specific surface area of 0.4 m 2 / g (obtained by firing magnesium hydroxide) was used as magnesium oxide.
- Example 6 The mixing ratio of the magnesium oxide fine powder, the magnesium fluoride powder, the germanium oxide powder, and the manganese carbonate powder in terms of a molar ratio of MgO: MgF 2 : GeO 2 : MnCO 3 is 4.1: 0.59: 1: 0.018.
- the same operation as in Example 1 was performed except that the raw material mixture was fired at 1000 ° C. for 3 hours and then at a temperature of 1200 ° C. for 3 hours to obtain 4.1 MgO ⁇ 0.6MgF 2.
- a deep red light-emitting magnesium fluorogermanate phosphor represented by the formula GeO 2 : 0.018Mn 4+ was produced.
- the obtained phosphor had a maximum X-ray diffraction line peak of 35 at a diffraction angle 2 ⁇ . It was confirmed to have a maximum emission peak in the wavelength range of 640 to 680 nm with a range of .2 to 36.0 degrees. The intensity of the maximum emission peak was 147 as a relative value with the intensity of the maximum emission peak of the phosphor obtained in Comparative Example 1 being 100.
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Abstract
Description
(k-x)MgO・xAF2・GeO2:yMn4+
但し、上記式において、kは2.8~5の実数であり、xは0.1~0.7の実数であり、yは0.005~0.015の実数であり、Aは、カルシウム、ストロンチウム、バリウム、亜鉛、またはこれらの混合物である。
この特許文献には、上記蛍光体の製造方法として、酸化マグネシウム、フッ化金属、酸化ゲルマニウムおよびマンガン前駆体化合物を、(k-x):x:1:yのモル比となるように均一に混合して混合粉末を準備する段階と、混合粉末を1000~1200℃の温度下で4~9時間熱処理して混合粉末を焼成する段階と、焼成された粉末を洗浄およびろ過する段階とを含む方法が記載されている。但し、この特許文献には、酸化マグネシウム源として用いる酸化マグネシウムの性状に関する記載はない。なお、この特許文献には、上記蛍光体の用途として、紫外線光源または青色光源を採用するLEDや蛍光ランプの赤色発光源が記載されている。
この特許文献には、構成元素の組成比を変えた深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体として下記の式で表される蛍光体が記載されている。
xMgO・yMgF2・GeO2:zMn4+
但し、上記式において、1.5<x≦4、0.5<y≦2、0<z≦0.1、y<xである。
また、この特許文献には、構成元素を他の元素に置換した深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体の一例として下記の式で表される蛍光体も記載されている。
(x-a)MgO・aMe1O・yMgF2・bMe2Hal2・(1-c)GeO2・cMtO2:zMn4+
但し、上記式において、1.5<x≦4、0<y≦2、0<z≦0.1、0<a<1.5、0<b≦2、0<c<0.5、Me1、Me2はカルシウム、ストロンチウム、バリウム、亜鉛から選ばれた少なくとも1つ以上、Halはフッ素、塩素から選ばれた少なくとも1つ以上、Mtはチタン、スズ、ジルコニウムから選ばれた少なくとも1つ以上である。
但し、この特許文献には、上記蛍光体の製造方法に関する一般的な記載はなく、実施例では、酸化マグネシウム源に炭酸マグネシウムを用いて蛍光体を製造している。なお、この特許文献にも、上記蛍光体の用途として発光ダイオード(LED)の赤色発光源が記載されている。
従って、本発明の目的は、近紫外領域の光で励起させたときの発光の強度が高い深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体を工業的に有利に製造することができる方法を提供することにある。本発明の目的はまた、近紫外領域の光での励起させたときの発光の強度が高い深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体、及びその蛍光体を赤色発光源に用いた発光装置を提供することにある。
(1)入射角がθのCuKα線を用いて測定された回折角2θが35.2~36.0度の範囲に最大X線回折線ピークを有する。
(2)酸化マグネシウム微粉末が立方体形状の一次粒子を含む微粉末である。
(3)酸化マグネシウム微粉末が純度が99.9質量%以上の微粉末である。
(4)酸化マグネシウム微粉末が、マグネシウム蒸気と酸素とを気相下で接触させてマグネシウムを酸化させることによって得られた微粉末である。
(5)深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体が、下記式(I)で表される組成の蛍光体である。
xMgO・yAF2・GeO2:zMn4+・・・(I)
ただし、式(I)において、Aは、Mg、Ca、Sr、Ba及びZnからなる群より選ばれる少なくとも一種の元素であり、xは1.5~4.5の範囲の数であり、yは0.050~2.5の範囲の数であり、zは0.0010~0.10の範囲の数であり、特に0.0050~0.040の範囲の数である。
(6)半導体発光素子と、該半導体発光素子にて発生した光で励起させて赤色を発光する赤色発光蛍光体とを含む発光装置の赤色発光蛍光体用である。
(1)深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体が、入射角がθのCuKα線を用いて測定された回折角2θが35.2~36.0度の範囲に最大X線回折線ピークを有する蛍光体である。
(2)酸化マグネシウム微粉末が立方体形状の一次粒子を含む微粉末である。
(3)酸化マグネシウム微粉末が純度が99.9質量%以上の微粉末である。
(4)酸化マグネシウム微粉末が、マグネシウム蒸気と酸素とを気相下で接触させてマグネシウムを酸化させることによって得られた微粉末である。
xMgO・yAF2・GeO2:zMn4+・・・(I)
ただし、式(I)において、Aは、Mg、Ca、Sr、Ba及びZnからなる群より選ばれる少なくとも一種の元素であり、xは1.5~4.5の範囲、特に3.0~4.3の範囲の数であり、yは0.050~2.5の範囲、特に0.10~1.0の範囲の数であり、zは0.0010~0.10の範囲、特に0.0050~0.040の範囲の数である。
BET比表面積が8m2/g、純度が99.98質量%の酸化マグネシウム(MgO)微粉末(気相法により製造されたもの、立方体形状の一次粒子の含有量:90%)、フッ化マグネシウム(MgF2)粉末(BET比表面積:0.02m2/g、純度:99質量%)、酸化ゲルマニウム(GeO2)粉末(BET比表面積:0.06m2/g、純度:99.9質量%)、炭酸マンガン(MnCO3)粉末(BET比表面積:0.06m2/g、純度:99.9質量%)を、それぞれMgO:MgF2:GeO2:MnCO3のモル比が3.5:0.5:1:0.015となる割合にて秤量した。秤量した各原料粉末をエタノールに投入し、ロッキングミルを用いて混合した後、120℃の温度で数時間乾燥して、原料混合物を得た。得られた原料混合物を乳鉢で解砕した後、その原料混合物を酸化アルミニウム製のるつぼに入れ、1100℃の温度で3時間焼成して、3.5MgO・0.5MgF2・GeO2:0.015Mn4+の式で表される深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体を製造した。得られた深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体のX線回折パターンと発光スペクトルとを下記の方法により測定したところ、得られた蛍光体は、最大X線回折線ピークを回折角2θで35.2~36.0度の範囲に有し、最大発光ピークを640~680nmの波長範囲に有することが確認された。
下記の条件にて測定する。
測定:連続測定
X線源:CuKα
管電圧:40kV
管電流:40mA
発散スリット幅:1/2deg
散乱スリット幅:1/2deg
受光スリット幅:0.30mm
スキャンステップ:2deg/分
スキャンステップ:0.02deg
試料の深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体に、Xeランプを用いて波長400nmの紫外光を照射して発光スペクトルを測定する。
エタノールに投入した各原料粉末をボールミルを用いて混合したこと以外は、実施例1と同じ操作を行なって深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体を製造した。
原料混合物の焼成を1150℃の温度で3時間行なったこと以外は、実施例1と同じ操作を行なって深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体を製造した。
原料混合物の焼成を1200℃の温度で3時間行なったこと以外は、実施例1と同じ操作を行なって深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体を製造した。
エタノールに投入した各原料粉末をボールミルを用いて混合したこと、そして原料混合物の焼成を1200℃の温度で3時間行なったこと以外は、実施例1と同じ操作を行なって深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体を製造した。
酸化マグネシウム微粉末の代わりに、BET比表面積が0.4m2/g、純度が99質量%の酸化マグネシウム粉末(水酸化マグネシウムを焼成して得たもの)を用いたこと以外は、実施例1と同じ操作を行なって深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体を製造した。
酸化マグネシウム微粉末の代わりに、BET比表面積が0.4m2/g、純度が99質量%の酸化マグネシウム粉末(水酸化マグネシウムを焼成して得たもの)を用いたこと、原料混合物の焼成を1200℃の温度で3時間行なったこと以外は、実施例1と同じ操作を行なって深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体を製造した。
比較例1、2:酸化マグネシウムに、BET比表面積が0.4m2/gの酸化マグネシウム粉末(水酸化マグネシウムを焼成して得たもの)を使用。
酸化マグネシウム微粉末、フッ化マグネシウム粉末、酸化ゲルマニウム粉末、炭酸マンガン粉末の混合比を、それぞれMgO:MgF2:GeO2:MnCO3のモル比で4.1:0.59:1:0.018としたこと、原料混合物の焼成を1000℃で3時間行なった後、1200℃の温度で3時間行なったこと以外は、実施例1と同じ操作を行なって、4.1MgO・0.6MgF2・GeO2:0.018Mn4+の式で表される深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体を製造した。得られた深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体のX線回折パターンと発光スペクトルとを前記の方法により測定したところ、得られた蛍光体は、最大X線回折線ピークを回折角2θで35.2~36.0度の範囲に有し、最大発光ピークを640~680nmの波長範囲に有することが確認された。最大発光ピークの強度は、比較例1で得られた蛍光体の最大発光ピークの強度を100とした相対値で147であった。
2 接着剤
3 半導体発光素子
4a、4b 電極
5a、5b リード線
6 樹脂層
7 蛍光体層
8 光反射材
9a、9b 導電線
Claims (12)
- 酸化マグネシウム、フッ素化合物、ゲルマニウム化合物、マンガン化合物を含む混合物を焼成することによって得られた、波長400nmの光で励起させると640~680nmの波長範囲に最大ピークを有する発光を示す深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体であって、酸化マグネシウムがBET比表面積が5~200m2/gの範囲にある酸化マグネシウム微粉末であることを特徴とする深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体。
- 入射角がθのCuKα線を用いて測定された回折角2θが35.2~36.0度の範囲に最大X線回折線ピークを有する蛍光体である請求項1に記載の深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体。
- 酸化マグネシウム微粉末が立方体形状の一次粒子を含む微粉末である請求項1に記載の深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体。
- 酸化マグネシウム微粉末が純度が99.9質量%以上の微粉末である請求項1に記載の深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体。
- 酸化マグネシウム微粉末が、マグネシウム蒸気と酸素とを気相下で接触させてマグネシウムを酸化させることによって得られた微粉末である請求項1に記載の深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体。
- 深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体が、下記式(I)で表される組成の蛍光体である請求項1に記載の深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体:
xMgO・yAF2・GeO2:zMn4+・・・(I)
(ただし、式(I)において、Aは、Mg、Ca、Sr、Ba及びZnからなる群より選ばれる少なくとも一種の元素であり、xは1.5~4.5の範囲の数であり、yは0.050~2.5の範囲の数であり、zは0.0010~0.10の範囲の数である)。 - 半導体発光素子と、該半導体発光素子にて発生した光で励起させて赤色を発光する赤色発光蛍光体とを含む発光装置の赤色発光蛍光体用である請求項1に記載の深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体。
- 酸化マグネシウム、フッ素化合物、ゲルマニウム化合物、マンガン化合物を含む混合物を焼成する工程を含む、波長400nmの光で励起させると640~680nmの波長範囲に最大ピークを有する発光を示す深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体の製造方法であって、酸化マグネシウムがBET比表面積が5~200m2/gの範囲にある酸化マグネシウム微粉末であることを特徴とする深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体の製造方法。
- 深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体が、入射角がθのCuKα線を用いて測定された回折角2θが35.2~36.0度の範囲に最大X線回折線ピークを有する蛍光体である請求項8に記載の深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体の製造方法。
- 波長350~430nmの光を発光する半導体発光素子と、請求項1に記載の深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体とを含む発光装置。
- 波長350~430nmの光を発光する半導体発光素子、請求項1に記載の深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体、該半導体発光素子にて発生した光で励起させると青色光の発光を示す青色発光蛍光体、そして該半導体発光素子にて発生した光で励起させると緑色光の発光を示す緑色発光蛍光体を含む発光装置。
- 青色光を発光する半導体発光素子、請求項1に記載の深赤色発光性フルオロゲルマニウム酸マグネシウム蛍光体、そして該半導体発光素子にて発生した光で励起させると緑色光の発光を示す緑色発光蛍光体を含む発光装置。
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CN111269718B (zh) * | 2020-04-02 | 2022-09-23 | 常熟理工学院 | 一种复合钙钛矿型深红色荧光粉及其制备方法与应用 |
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JP2017216438A (ja) * | 2016-05-26 | 2017-12-07 | 日亜化学工業株式会社 | 発光装置 |
JP2019114794A (ja) * | 2016-05-26 | 2019-07-11 | 日亜化学工業株式会社 | 発光装置 |
KR102590034B1 (ko) * | 2016-05-26 | 2023-10-16 | 쑤저우 레킨 세미컨덕터 컴퍼니 리미티드 | 형광체 조성물, 이를 포함하는 발광소자 패키지 및 조명장치 |
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