JP5752886B2 - 蛍光体及び発光装置 - Google Patents
蛍光体及び発光装置 Download PDFInfo
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims description 117
- 239000000126 substance Substances 0.000 claims description 26
- 239000000758 substrate Substances 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 13
- 150000004767 nitrides Chemical class 0.000 claims description 8
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 7
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 10
- 229910052723 transition metal Inorganic materials 0.000 description 10
- 150000003624 transition metals Chemical class 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 238000000295 emission spectrum Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 229910052761 rare earth metal Inorganic materials 0.000 description 6
- 150000002910 rare earth metals Chemical class 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 5
- 150000001342 alkaline earth metals Chemical class 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 229910052796 boron Inorganic materials 0.000 description 4
- 229910052793 cadmium Inorganic materials 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 229910052733 gallium Inorganic materials 0.000 description 4
- 229910052732 germanium Inorganic materials 0.000 description 4
- 229910052738 indium Inorganic materials 0.000 description 4
- 229910052740 iodine Inorganic materials 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 229910052716 thallium Inorganic materials 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 229910052789 astatine Inorganic materials 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000010298 pulverizing process Methods 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- -1 NH 4 F Chemical class 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000007333 cyanation reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 150000004820 halides Chemical class 0.000 description 2
- 150000002366 halogen compounds Chemical class 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910016036 BaF 2 Inorganic materials 0.000 description 1
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229910017855 NH 4 F Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910003564 SiAlON Inorganic materials 0.000 description 1
- 229910004283 SiO 4 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052705 radium Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
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- 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
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- C09K11/65—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing carbon
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- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
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- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
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- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
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Description
シアン系蛍光体
図1及び図2において、前記発光ダイオードチップ110で発生した光によって励起される蛍光体151には、次のようなシアン系蛍光体が使用されることができる。
シアン系蛍光体の製造方法は、次のような工程を含む。
(a)一定量のアルカリ土類金属酸化物、ハロゲン化物、炭酸化物、窒化物または遷移金属酸化物のうち少なくとも何れか一つと、一定量のメラミンと、活性剤としてアルカリ稀土類金属または遷移金属と、フラックスとしてNH4F、NH4Cl、BaF2、BaCl2、CaF2、MgF2などのようなハロゲン化物を溶媒下で湿式混合し、該混合物を30分〜24時間の間乾燥する段階と、
(b)(a)段階で得られた混合物を反応器に入れて、30分〜5時間の間1×10−1atm〜1×10−10atmの真空で不活性ガスを常圧まで充填する段階と、
(c)(b)段階の後1〜48時間の間500〜1500℃の還元熱処理でシアン化する段階と、
(d)(c)段階で得られた蛍光体を粉砕及び分級して一定大きさの蛍光体粉末を得る段階と、
(e)(d)段階で得られた前記蛍光体を洗浄して未反応物質を取り除く段階を含む。
2.79gのBaCl2、0.42gのEuCl3、19.22gのC3N6H6をアセトンに入れ、ボールミルを用いて1時間混合した。混合物を50℃乾燥器に入れ、1時間乾燥して溶媒を完全に揮発させた。混合した材料を反応器に入れて1時間の間真空にして反応器内部の酸素を除去し、N2ガスで常圧まで充填した。そして、NH3ガスが40体積%混合されたN2混合ガスを5L/min流しながら800℃で3時間の間焼結した。熱処理の完了した蛍光体を粉砕し、20um粉体を用いて発光装置への利用が容易な大きさの蛍光体を分級した。分級の完了した蛍光体には未反応物が含有されているので、エチルアルコールとアセトンが1:1の割合で混合された溶液に入れて30分間超音波洗浄をしてから乾燥して、Ba(CN)2:Eu2+の化学式を有する蛍光体を製造した。
1.38gのZn(CN)2、0.0069gのCaO、0.026gのMnO、19.39gのC3N6H6をアセトンに入れ、ボールミルを用いて1時間混合した。混合物を50℃乾燥器に入れ、1時間乾燥して溶媒を完全に揮発させた。混合した材料を反応器に入れて1時間の間真空にして反応器内部の酸素を除去し、N2ガスで常圧まで充填した。そして、NH3ガスが50体積%混合されたN2混合ガスを2L/min流しながら800℃で3時間の間焼結した。熱処理の完了した蛍光体を粉砕し、20um粉体を用いて発光装置への利用が容易な大きさの蛍光体を分級した。分級の完了した蛍光体には未反応物が含有されているので、エチルアルコールとアセトンが1:1の割合で混合された溶液に入れて30分間超音波洗浄をしてから乾燥して、Zn(CN)2:Mn2+の化学式を有する蛍光体を製造した。
図1及び図2を参照すると、上述したLxMyCz1Nz2:Aa(但し、前記化学式において、Lはアルカリ土類金属、遷移金属、Zn、Cd、Al、Ga、In、Tl、GeまたはSnのうち少なくとも何れか一つであり、MはB、Si、P、S、F、Cl、IまたはSeのうち少なくとも何れか一つであり、Aはアルカリ稀土類金属または遷移金属のうち少なくとも何れか一つであり、0<x≦5、0≦y≦5、1≦z1≦10、1≦z2≦10、0<a≦1である)の化学式を有する蛍光体と380nm〜500nmの波長範囲で発光ピークを有するGaN系の発光ダイオードチップ110を使用して発光装置を製造した。
図3は、Ba(CN)2:Eu2+の化学式を有するシアン系蛍光体が含まれた発光装置の発光スペクトルを示す図であり、図4は、Zn(CN)2:Mn2+の化学式を有するシアン系蛍光体が含まれた発光装置の発光スペクトルを示す図である。
Claims (11)
- Ba(CN) 2 :Eu 2+ の化学式で表示される蛍光体。
- Zn(CN) 2 :Mn 2+ の化学式で表示される蛍光体。
- 発光ダイオードチップと、
前記発光ダイオードチップを保持する基板と、
前記基板に設けられ、前記発光ダイオードチップと電気的に連結される電極層と、
前記発光ダイオードチップで発生した光によって励起される蛍光体と、を含み、
前記蛍光体は、Ba(CN) 2 :Eu 2+ の化学式で表示される発光装置。 - 発光ダイオードチップと、
前記発光ダイオードチップを保持する基板と、
前記基板に設けられ、前記発光ダイオードチップと電気的に連結される電極層と、
前記発光ダイオードチップで発生した光によって励起される蛍光体と、を含み、
前記蛍光体は、Zn(CN) 2 :Mn 2+ の化学式で表示される発光装置。 - 前記発光ダイオードチップの周囲に配置される封止層をさらに含む請求項3または4に記載の発光装置。
- 前記蛍光体は前記封止層に少なくとも部分的に分散される請求項5に記載の発光装置。
- 前記発光ダイオードチップは380nm〜500nmの波長範囲で発光ピークを有する請求項3〜6のいずれか一項に記載の発光装置。
- 発光ダイオードチップと、
前記発光ダイオードチップを保持する基板と、
前記基板に設けられ、前記発光ダイオードチップと電気的に連結される電極層と、
前記発光ダイオードチップで発生した光によって励起される蛍光体と、を含み、
前記蛍光体は、Ba(CN) 2 :Eu 2+ の化学式で表示される第1蛍光体と、シリケート系蛍光体、硫化物系蛍光体または窒化物系蛍光体のうち何れか一つを含む第2蛍光体とを含む発光装置。 - 発光ダイオードチップと、
前記発光ダイオードチップを保持する基板と、
前記基板に設けられ、前記発光ダイオードチップと電気的に連結される電極層と、
前記発光ダイオードチップで発生した光によって励起される蛍光体と、を含み、
前記蛍光体は、Zn(CN) 2 :Mn 2+ の化学式で表示される第1蛍光体と、シリケート系蛍光体、硫化物系蛍光体または窒化物系蛍光体のうち何れか一つを含む第2蛍光体とを含む発光装置。 - 前記発光ダイオードチップは380nm〜500nmの波長範囲で発光ピークを有し、前記第1蛍光体は前記発光ダイオードチップから放出される光によって励起されて520nm〜680nmの波長範囲で発光ピークを有する光を放出し、前記第2蛍光体は前記発光ダイオードチップから放出される光によって励起されて500nm〜550nmの波長範囲で発光ピークを有する光を放出する請求項8または9に記載の発光装置。
- 前記発光ダイオードチップの周囲に配置される封止層をさらに含み、前記第1蛍光体及び第2蛍光体は前記封止層に少なくとも部分的に分散される請求項8〜10のいずれか一項に記載の発光装置。
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