JP2017201012A - 発光デバイス用の波長変換材料 - Google Patents
発光デバイス用の波長変換材料 Download PDFInfo
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- JP2017201012A JP2017201012A JP2017089149A JP2017089149A JP2017201012A JP 2017201012 A JP2017201012 A JP 2017201012A JP 2017089149 A JP2017089149 A JP 2017089149A JP 2017089149 A JP2017089149 A JP 2017089149A JP 2017201012 A JP2017201012 A JP 2017201012A
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- 239000000463 material Substances 0.000 title claims abstract description 88
- 239000013078 crystal Substances 0.000 claims abstract description 7
- 229910052706 scandium Inorganic materials 0.000 claims abstract description 5
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 47
- 239000000919 ceramic Substances 0.000 claims description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 239000002019 doping agent Substances 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 19
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- 239000000758 substrate Substances 0.000 description 14
- 125000004429 atom Chemical group 0.000 description 13
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 11
- 239000000203 mixture Substances 0.000 description 11
- 150000001768 cations Chemical class 0.000 description 10
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- 230000015572 biosynthetic process Effects 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
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- 238000005245 sintering Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- -1 contact length Substances 0.000 description 4
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- 239000010703 silicon Substances 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
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- 229910003564 SiAlON Inorganic materials 0.000 description 2
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- 229910017109 AlON Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
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- 238000009833 condensation Methods 0.000 description 1
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- RAABOESOVLLHRU-UHFFFAOYSA-N diazene Chemical compound N=N RAABOESOVLLHRU-UHFFFAOYSA-N 0.000 description 1
- 229910000071 diazene Inorganic materials 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000001513 hot isostatic pressing Methods 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
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- 238000004020 luminiscence type Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001451 molecular beam epitaxy Methods 0.000 description 1
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- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910002059 quaternary alloy Inorganic materials 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000001429 visible spectrum Methods 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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Abstract
【解決手段】発光デバイス用の波長変換材料は、AE3−x1−y+zRE3−x2+y−z[Si9−wAlw(N1−yCy)[4](N16−z−wOz+w)[2]]:Eux1,Cex2によって規定される波長変換材料。(AEはCa,Sr,Ba;RE=Y,Lu,La,Sc;0≦x1≦0.18;0≦x2≦0.2;x1+x2>0;0≦y≦1;0≦z≦3;0≦w≦3)立方晶結晶構造を持ち、AE+REの平均有効イオン半径が120pm以下である、波長変換材料。
【選択図】図1
Description
1. 強い共有結合性のアクティベータ ― アクティベータの正味の正電荷を効率的に低下させるにはリガンド相互作用が必要とされる。配位するN[2]リガンドを有する媒質凝集窒化物格子が最も好適であると考えられる。
2. 発光バンドの一様でない広がりを回避するために、ホストは、ホスト構造内に、(SiAlON又はCaSiAlN3:Euで見出されるように)アクティベータイオンに対する唯一の置換格子サイトを含み、統計的なサイト占有を有するべきでない。ホスト格子内に2つ以上の置換格子が存在する場合、発光バンドの重なり合いを回避するために、置換格子サイトは化学的性質において有意に異なるべきである。
3. アクティベータサイトは、励起状態におけるアクティベータの可能な構造緩和モードを制限するために、高い対称性を示すべきである。好ましくは、アクティベータサイトは、励起状態緩和を妨げ、故にストークスシフトを最小化するために、Eu2+よりも大きい(Baサイト)。」と記載されている。
Claims (14)
- AE=Ca,Sr,Ba、RE=Y,Lu,La,Sc、0≦x1≦0.18、0≦x2≦0.2、x1+x2>0、0≦y≦1、0≦z≦3、0≦w≦3として、AE3−x1−y+zRE3−x2+y−z[Si9−wAlw(N1−yCy)[4](N16−z−wOz+w)[2]]:Eux1,Cex2を有する波長変換材料。
- 当該波長変換材料は立方晶結晶構造を持つ、請求項1に記載の波長変換材料。
- 当該波長変換材料は、X[2](X=N,O)原子による1つのEu2+ドーパントサイトの立方晶配位を示す、請求項1に記載の波長変換材料。
- 当該波長変換材料は、星形のY(SiX4)4(Y=C,N)ホスト格子ビルディングブロックを有する、請求項1に記載の波長変換材料。
- AE+REの平均有効イオン半径は120pm以下である、請求項1に記載の波長変換材料。
- 0<y≦1である、請求項1に記載の波長変換材料。
- z+w>0である、請求項1に記載の波長変換材料。
- a. 青色光を放つ発光ダイオードと、
b. 前記青色光の経路内に配置された波長変換材料であり、当該波長変換材料は、AE3−x1−y+zRE3−x2+y−z[Si9−wAlw(N1−yCy)[4](N16−z−wOz+w)[2]]:Eux1,Cex2を有し、ただし、AE=Ca,Sr,Ba、RE=Y,Lu,La,Sc、0≦x1≦0.18、0≦x2≦0.2、x1+x2>0、0≦y≦1、0≦z≦3、0≦w≦3である、波長変換材料と、
を有するデバイス。 - 前記波長変換材料は立方晶結晶構造を持つ、請求項8に記載のデバイス。
- 前記波長変換材料は、X[2](X=N,O)原子による1つのEu2+ドーパントサイトの立方晶配位を示す、請求項8に記載のデバイス。
- 前記波長変換材料は、星形のY(SiX4)4(Y=C,N)ホスト格子ビルディングブロックを有する、請求項8に記載のデバイス。
- AE+REの平均有効イオン半径は120pm以下である、請求項8に記載のデバイス。
- 前記波長変換材料は、赤色であるピーク波長を持つ光を放出する第1の波長変換材料であり、当該デバイスは更に、黄色又は緑色であるピーク波長を持つ光を放出する第2の波長変換材料を有する、請求項8に記載のデバイス。
- 前記波長変換材料はセラミックに形成されている、請求項8に記載のデバイス。
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