JP5628394B2 - 蛍光体変換半導体発光デバイス - Google Patents
蛍光体変換半導体発光デバイス Download PDFInfo
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- JP5628394B2 JP5628394B2 JP2013204416A JP2013204416A JP5628394B2 JP 5628394 B2 JP5628394 B2 JP 5628394B2 JP 2013204416 A JP2013204416 A JP 2013204416A JP 2013204416 A JP2013204416 A JP 2013204416A JP 5628394 B2 JP5628394 B2 JP 5628394B2
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- 229910052788 barium Inorganic materials 0.000 description 1
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
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- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
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- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
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- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
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- 229910052594 sapphire Inorganic materials 0.000 description 1
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- 229910052711 selenium Inorganic materials 0.000 description 1
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 description 1
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- 229910052716 thallium Inorganic materials 0.000 description 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 1
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- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
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- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 description 1
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- LSGOVYNHVSXFFJ-UHFFFAOYSA-N vanadate(3-) Chemical compound [O-][V]([O-])([O-])=O LSGOVYNHVSXFFJ-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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- 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
- C09K11/7788—Oxyhalogenides
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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
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
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- 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
- C09K11/7735—Germanates
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- 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
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- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
- C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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Description
図3及び図4は、LaOCl:Euの励起及び発光スペクトルを示す。図3において、460nmと470nmとの間の波長領域における最大強度は、220nmと320nmとの間の波長領域における最大強度の約21%である。図4において、680nmと720nmとの間の波長領域におけるピーク領域は、570nmと720nmとの間の波長領域におけるピーク領域の22%である。
図5及び図6は、Sr3In2Ge3O12:Euの励起及び発光スペクトルを示す。図5において、460nmと470nmとの間の波長領域における最大強度は、220nmと320nmとの間の波長領域における最大強度の約25%である。図6において、680nmと720nmとの間の波長領域におけるピーク領域は、570nmと720nmとの間の波長領域におけるピーク領域の25%である。
図7及び図8は、Y2SiO5:Euの励起及び発光スペクトルを示す。図7において、460nmと470nmとの間の波長領域における最大強度は、220nmと320nmとの間の波長領域における最大強度の約11%である。図8において、680nmと720nmとの間の波長領域におけるピーク領域は、570nmと720nmとの間の波長領域におけるピーク領域の21%である。
図9及び図10は、Ca3Ga2Ge3O12:Euの励起及び発光スペクトルを示す。図9において、460nmと470nmとの間の波長領域における最大強度は、220nmと320nmとの間の波長領域における最大強度の約11%である。図10において、680nmと720nmとの間の波長領域におけるピーク領域は、570nmと720nmとの間の波長領域におけるピーク領域の27%である。
図11は、本発明の1つの実施の形態に係る発光スペクトルを示す。LEDは次のようにして製造された。20%の(Y,Gd)3Al5O12:Ceと80%のY2SiO5:Euとの粉末混合物が、液体シリコーン前駆体化合物(precursor compound)内において懸濁された。このシリコーン前駆体の滴が、波長465nmの光を発するLEDダイの上に配置され、この後、シリコーンを重合させた。次に、LEDがプラスチックレンズを用いて封じられた。図11が示すように、この結果得られたLEDが3000KというTcを有する良好な光学的特性を示している。
図12は、本発明の1つの実施の形態に係るLEDの発光スペクトルを示す。LEDは、次のようにして作製された。20%の(Y,Gd)3Al5O12:Ceと80%のLaOCl:Euとの粉末混合物が、液体シリコーン前駆体化合物内において懸濁された。このシリコーン前駆体の滴が、波長465nmの光を発するLEDダイの上に配置され、この後、シリコーンを重合させた。次に、LEDがプラスチックレンズを用いて封じられた。図12が示すように、この結果得られたLEDが3100KというTcを有する良好な光学的特性を示している。
本発明に係るEuを含む材料のスペクトルは、構内構築スペクトル分光螢光計を用いて測定された。この分光蛍光計システムの光源は、空冷ハウジング内の150Wキセノン(Xe)ランプである。ランプ出力は、0.5mの焦点距離を用いて励起モノクロメータ(ベンサム)の入射スリットに、その焦点が合わせられた。この励起モノクロメータの出射スリットから出る光は、サンプルチャンバ内に送られ、その焦点がいくつかのミラーを介して試験対象となるサンプル材料に合わせられる。試験対象となるサンプルは、水平方向に配向されるが、励起及び発光ブランチの光学軸は、垂直方向に配向され、かつ、ほぼ平行である。この幾何学的配向が、様々なサンプルについての信頼性のある定量的な比較測定を確実なものとする。サンプルチャンバは、ミラーシステムを介して、発光モノクロメータ(ベンサム、焦点距離0.5m)に対して光学的に結合される。発せられた光の検出は、発光モノクロメータの出射スリットに搭載された熱電気冷却型の(thermo-electrically cooled)光電子増倍管(PMT)ユニットを用いて行われる。このシステムは、全体的に、DOSに基づいた構内開発型ソフトウェアプログラムによってコンピュータにより制御される。
12 マウント
14、16 金属相互接続
18 半導体構造
22 ルミネッセンスセラミック
24 第2の蛍光体層
26 接着材料
28 粒子
30 ルミネッセンスセラミック
32 正角の層
34 成長基板
Claims (1)
- n型領域とp型領域との間に配置され第1のピーク波長を有する青色光を発するように構成された発光層、を含む半導体構造と、
前記発光層により発せられた光のパスにおいて配置され第2のピーク波長を有する光を発するように構成された第1の蛍光体と、
前記発光層により発せられた光のパスにおいて配置され第3のピーク波長を有する光を発するように構成された第2の蛍光体と、
を具備し、
前記第2の蛍光体がEu3+を含み、
298K及び1.013barにおける前記第2の蛍光体の励起スペクトルにおいて、460nmと470nmとの間の波長領域における最大強度が、220nmと320nmとの間の波長領域における最大強度の少なくとも5%であり、
前記第2の蛍光体が、Ba3(Y1-x-y-zGdxLuy)(BO3)3:Euz、M=(Br,Cl,I)を有するLaOM:Eu、Na9[(Y1-x-y-zLuxGdy)W10O36]: Euz、(Y1-x-y-zLuxGdy)[P(Mo3O10)4]: Euz(x, y=0.0-1.0, z=0.0-0.2)、及び、これらの混合物を含むグループから選択される、ことを特徴とするデバイス。
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| EP06100385.1 | 2006-01-16 | ||
| EP06100385 | 2006-01-16 | ||
| US11/623,068 US7446343B2 (en) | 2006-01-16 | 2007-01-13 | Phosphor converted light emitting device |
| US11/623,068 | 2007-01-13 |
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| US7554258B2 (en) | 2002-10-22 | 2009-06-30 | Osram Opto Semiconductors Gmbh | Light source having an LED and a luminescence conversion body and method for producing the luminescence conversion body |
| JP5138145B2 (ja) * | 2002-11-12 | 2013-02-06 | 日亜化学工業株式会社 | 蛍光体積層構造及びそれを用いる光源 |
| US7157745B2 (en) * | 2004-04-09 | 2007-01-02 | Blonder Greg E | Illumination devices comprising white light emitting diodes and diode arrays and method and apparatus for making them |
| JP2005075929A (ja) * | 2003-09-01 | 2005-03-24 | General Electric Co <Ge> | 希土類及びiiib族金属の酸化物を含む改善されたユーロピウム賦活蛍光体及びそれを作る方法 |
| JP2005252250A (ja) * | 2004-02-06 | 2005-09-15 | Mitsubishi Chemicals Corp | 発光装置およびそれを用いた照明装置、画像表示装置 |
| TWI243489B (en) * | 2004-04-14 | 2005-11-11 | Genesis Photonics Inc | Single chip light emitting diode with red, blue and green three wavelength light emitting spectra |
| US7361938B2 (en) * | 2004-06-03 | 2008-04-22 | Philips Lumileds Lighting Company Llc | Luminescent ceramic for a light emitting device |
-
2007
- 2007-01-10 RU RU2008133603/15A patent/RU2008133603A/ru not_active Application Discontinuation
- 2007-01-10 KR KR1020087020062A patent/KR20080089486A/ko not_active Withdrawn
- 2007-01-10 CN CNA2007800024432A patent/CN101370907A/zh active Pending
- 2007-01-10 JP JP2008549959A patent/JP2009524212A/ja not_active Withdrawn
- 2007-01-10 WO PCT/IB2007/050068 patent/WO2007080541A1/en not_active Ceased
- 2007-01-10 EP EP07700560A patent/EP1979439A1/en not_active Withdrawn
- 2007-01-12 TW TW096101284A patent/TW200738847A/zh unknown
- 2007-01-13 US US11/623,068 patent/US7446343B2/en active Active
- 2007-01-15 EP EP07700585.8A patent/EP1979438B1/en not_active Not-in-force
- 2007-01-15 CN CN200780002475.2A patent/CN101370906B/zh not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| TW200738847A (en) | 2007-10-16 |
| WO2007080541A1 (en) | 2007-07-19 |
| EP1979439A1 (en) | 2008-10-15 |
| JP2009524212A (ja) | 2009-06-25 |
| CN101370906A (zh) | 2009-02-18 |
| KR20080089486A (ko) | 2008-10-06 |
| EP1979438B1 (en) | 2015-08-19 |
| CN101370906B (zh) | 2015-01-28 |
| RU2008133603A (ru) | 2010-02-27 |
| JP2014039053A (ja) | 2014-02-27 |
| CN101370907A (zh) | 2009-02-18 |
| TWI422057B (zh) | 2014-01-01 |
| TW200746465A (en) | 2007-12-16 |
| US20080023712A1 (en) | 2008-01-31 |
| EP1979438A1 (en) | 2008-10-15 |
| US7446343B2 (en) | 2008-11-04 |
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