JP2017504949A - 固体照明用のニトリドアルモシリケート蛍光体 - Google Patents
固体照明用のニトリドアルモシリケート蛍光体 Download PDFInfo
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- JP2017504949A JP2017504949A JP2016517405A JP2016517405A JP2017504949A JP 2017504949 A JP2017504949 A JP 2017504949A JP 2016517405 A JP2016517405 A JP 2016517405A JP 2016517405 A JP2016517405 A JP 2016517405A JP 2017504949 A JP2017504949 A JP 2017504949A
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- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
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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
- C09K11/0883—Arsenides; Nitrides; Phosphides
-
- 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
- C09K11/77348—Silicon Aluminium Nitrides or Silicon Aluminium Oxynitrides
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Abstract
Description
蛍光体の合成
新たなニトリドアルモシリケート蛍光体の典型的な開始化合物は、アルカリ土類金属水酸化物及び窒化物、Li3N、LiH、AlN、Si3N4、Eu2O3、EuCl3、EuF3、又はそれら及びLi、Mg、Al、Siのような付加化合物から成る前駆体物質(例えば、例2及び6で使用されるBa1−xAlSi:Eux前駆体)を含む。
例1:Ba0.96Li1.6Mg0.4Al2.4Si1.6N6:Eu0.04
密閉されたタンタル製アンプル内で、Ba3Mg3N2F6、Si(NH)2、AlF3、Li3N、Li、及びEuF3の混合物を反応させることによって、名目組成BaMg2−aLiaAl2+aSi2−aN6:Eu(4%)の単結晶を合成した。結晶構造の決定のために、X線回折法及びルミネセンス顕微鏡でのフォトルミネセンス測定により、好適な結晶を採取した。a=0.4について、〜562nmにピーク発光を有する黄色ルミネセンス(450nm励起、ルミネセンス顕微鏡)を示す結晶を得た。
11.553gのBa0.99AlSi:Eu0.01、1.394gのLi3N、2.460gのAlN、及び2.806gのSi3N4の混合物を、フォーミングガスN2/H2(5%)内でモリブデンのるつぼ内にて1150℃で2hかけて焼成した。得られた緑がかった黄色の粉末は、〜534nmにピーク発光を有する緑色ルミネセンス(440nm励起)を示している。
少量の焼結したままの粉末を、0.05M酢酸内で(25℃で1hかき混ぜて)後処理した。デカンテーションと、ろ過と、0.05M酢酸及び純水での洗浄との後、粉末を乾燥させてイソPrOH内に懸濁させた。3hの沈降の後、上澄みを除去し、残った粉末を更なる測定のために120℃で乾燥させた(例2b)。
10.347gのBaH2、1.567gのLi3N、0.505gのMg3N2、6.763gのAlN、6.313gのSi3N4、及び0.132gのEu2O3の混合物を、フォーミングガスN2/H2(5%)内でモリブデンのるつぼ内にて700℃で2h及び1125℃で4hかけて焼成した。得られた緑がかった黄色の粉末は、〜537nmにピーク発光を有する緑色ルミネセンス(440nm励起)を示している。
少量の焼結したままの粉末を、0.05M酢酸内で(25℃で1hかき混ぜて)後処理した。デカンテーションと、ろ過と、0.05M酢酸及び純水での洗浄との後、粉末を乾燥させてイソPrOH内に懸濁させた。3hの沈降の後、上澄みを除去し、残った粉末を更なる測定のために120℃で乾燥させた(例3b)。
10.347gのBaH2、0.132gのEu2O3、1.567gのLi3N、0.505gのMg3N2、6.148gのAlN、及び6.313gのSi3N4の混合物を、N2/H2(5%)雰囲気内でモリブデンのるつぼ内にて700℃で2h及び1100℃で12hかけて焼成した。得られた粉末は、〜540nmにピーク発光を有する緑色ルミネセンス(440nm励起)を示している。
少量の焼結したままの粉末を、0.05M酢酸内で(25℃で1hかき混ぜて)後処理した。デカンテーションと、ろ過と、0.05M酢酸及び純水での洗浄との後、粉末を更なる測定のために120℃で乾燥させた(例4b)。得られた粉末は、〜540nmにピーク発光を有する緑色ルミネセンス(440nm励起)を示している。
9.301gのBaH2、0.672gのSrH2、0.132gのEu2O3、1.742gのLi3N、6.148gのAlN、及び7.014gのSi3N4の混合物を、N2/H2(5%)雰囲気内でモリブデンのるつぼ内にて700℃で2h及び1175℃で4hかけて焼成した。得られた粉末は、〜533nmにピーク発光を有する緑色ルミネセンス(440nm励起)を示している。
13.478gのBa0.99Eu0.01AlSi、1.625gのLi3N、2.869gのAlN、及び3.273gのSi3N4の混合物を、N2/H2(5%)雰囲気内でモリブデンのるつぼ内にて1150℃で4hかけて焼成した。焼結したままの粉末を、イソPrOH内に懸濁させた。3hの沈降の後、上澄みを除去し、残った粉末を120℃で乾燥させた。得られた粉末は、〜535nmにピーク発光を有する緑色ルミネセンス(440nm励起)を示している。
13.795gのBaH2、0.258gのEuCl3、2.264gのLi3N、0.168gのMg3N2、7.583gのAlN、及び9.118gのSi3N4の混合物を、N2/H2(5%)雰囲気内でモリブデンのるつぼ内にて700℃で2h及び1100℃で4hかけて焼成した。焼結したままの粉末を、イソPrOH内に懸濁させた。3hの沈降の後、上澄みを除去し、残った粉末を120℃で乾燥させた。得られた粉末は、〜535nmにピーク発光を有する緑色ルミネセンス(440nm励起)を示している。
10.242gのBaH2、0.264gのEu2O3、1.567gのLi3N、0.505gのMg3N2、6.148gのAlN、及び6.313gのSi3N4の混合物を、N2/H2(5%)雰囲気内でモリブデンのるつぼ内にて700℃で2h及び1150℃で4hかけて焼成した。焼結したままの粉末を、0.05M酢酸内で(25℃で1hかき混ぜて)後処理した。デカンテーションと、ろ過と、0.05M酢酸及び純水での洗浄との後、粉末を更なる測定のために120℃で乾燥させた。得られた粉末は、〜544nmにピーク発光を有する緑色ルミネセンス(440nm励起)を示している。
単結晶データ(例1)から、正方晶空間群P 4/n c c(No.130)が決定された(正方晶系、a=b≠c、α=β=γ=90°)。格子パラメータ及びセル体積を、以下の表3にまとめている。例1を除く全てのデータが、X線回折粉末パターンのリートベルト解析(精密化)から取得されたものである。
Claims (16)
- 光源光を生成するように構成された光源と、前記光源光の少なくとも一部をルミネセント材料光へと変換するように構成されたルミネセント材料と、を有する照明ユニットであって、前記光源は、発光ダイオード(LED)を有し、前記ルミネセント材料は、化学式:
M1−x−y−zZzAaBbCcDdEeN6−nOn:ESx,REy (I)
を持つ蛍光体を有し、
ここで、
Mは、二価のCa、Sr、及びBaからなる群から選択され、
Zは、一価のNa、K、及びRbからなる群から選択され、
Aは、一価のLi及びCuからなる群から選択され、
Bは、二価のMg、Mn、Zn、及びCdからなる群から選択され、
Cは、三価のB、Al、及びGaからなる群から選択され、
Dは、四価のSi、Ge、Ti、及びHfからなる群から選択され、
Eは、五価のP、V、Nb、及びTaからなる群から選択され、
ESは、二価のEu、Sm、及びYbからなる群から選択され、
REは、三価のCe、Pr、Nd、Sm、Eu、Gd、Tb、Dy、Ho、Er、及びTmからなる群から選択され、
0≦x≦0.2、0≦y≦0.2、0<x+y≦0.4、
0≦z<1、x+y+z<1、
0≦n≦0.75、
0≦a≦2、0≦b≦2、0≦c≦4、0≦d≦4、0≦e≦4、
a+b=2、c+d+e=4、且つ
a+2b+3c+4d+5e+y−z=16−n
である、照明ユニット。 - さらに、(i)z+a>0、及び(ii)0≦b≦0.5のうちの1つ以上である、請求項1に記載の照明ユニット。
- Mは、Ba及びSrからなる群から選択され、
Aは、Liであり、
Bは、Mgであり、
Cは、Al及びGaからなる群から選択され、
Dは、四価のSiであり、
ESは、二価のEuであり、
REは、三価のCe、Pr、Sm、Gd、Tb、及びDyからなる群から選択され、
0<x≦0.2、y/x<0.1、且つn≦0.1である、
請求項1又は2に記載の照明ユニット。 - REはCeを有し、x/y<0.1、且つn≦0.1である、請求項1乃至3の何れか一項に記載の照明ユニット。
- MはBaを有し、且つx+y+z<0.15である、請求項1乃至4の何れか一項に記載の照明ユニット。
- AはLiを有し、且つa>1.5である、請求項1乃至5の何れか一項に記載の照明ユニット。
- 化学式(I)の前記蛍光体は、空間群P 4/n c cの正方結晶対称性を有し、前記ルミネセント材料は更に、二価のユウロピウムを含有した窒化物ルミネセント材料、二価のユウロピウムを含有した酸窒化物ルミネセント材料、三価のセリウムを含有したガーネット、及び三価のセリウムを含有した酸窒化物からなる群から選択された1つ以上のその他の蛍光体を有し、且つ前記光源は、青色光を生成するように構成されている、請求項1乃至6の何れか一項に記載の照明ユニット。
- 前記ルミネセント材料は更に、Ba0.95Sr0.05Mg2Ga2N4:Eu、BaMg2Ga2N4:Eu、SrMg3SiN4:Eu、SrMg2Al2N4:Eu、SrMg2Ga2N4:Eu、BaMg3SiN4:Eu、CaLiAl3N4:Eu、SrLiAl3N4:Eu、CaLi0.5MgAl2.5N4:Eu、及びSrLi0.5MgAl2.5N4:Euからなる群から選択された1つ以上のその他の蛍光体を有する、請求項1乃至7の何れか一項に記載の照明ユニット。
- 蛍光体であって、化学式:
M1−x−y−zZzAaBbCcDdEeN6−nOn:ESx,REy (I)
を持ち、
ここで、
Mは、二価のCa、Sr、及びBaからなる群から選択され、
Zは、一価のNa、K、及びRbからなる群から選択され、
Aは、一価のLi及びCuからなる群から選択され、
Bは、二価のMg、Mn、Zn、及びCdからなる群から選択され、
Cは、三価のB、Al、及びGaからなる群から選択され、
Dは、四価のSi、Ge、Ti、及びHfからなる群から選択され、
Eは、五価のP、V、Nb、及びTaからなる群から選択され、
ESは、二価のEu、Sm、及びYbからなる群から選択され、
REは、三価のCe、Pr、Nd、Sm、Eu、Gd、Tb、Dy、Ho、Er、及びTmからなる群から選択され、
0≦x≦0.2、0≦y≦0.2、0<x+y≦0.4、
0≦z<1、x+y+z<1、
0≦n≦0.75、
0≦a≦2、0≦b≦2、0≦c≦4、0≦d≦4、0≦e≦4、
a+b=2、c+d+e=4、且つ
a+2b+3c+4d+5e+y−z=16−n
である、蛍光体。 - z+a>0、0≦b≦0.5であり、MはBaを有し、且つx+y+z<0.15であり、且つ、AはLiを有し、且つa>1.5である、請求項9に記載の蛍光体。
- Bは、Mgであり、
Cは、Al及びGaからなる群から選択され、
Dは、四価のSiであり、
ESは、二価のEuであり、
REは、三価のCe、Pr、Sm、Gd、Tb、及びDyからなる群から選択され、
0≦b≦0.5、0<x≦0.2、y/x<0.1、且つn≦0.1である、
請求項9又は10に記載の蛍光体。 - 当該蛍光体は、M1−xLi2−qMgqAl2+q+nSi2−q−nN6−nOn:Euxを有し、ここで、n≦0.05、且つ0≦q≦0.4であり、且つMはBaを有する、請求項9乃至11の何れか一項に記載の蛍光体。
- REはCeを有し、x/y<0.1、且つn≦0.1である、請求項9乃至12の何れか一項に記載の蛍光体。
- 当該蛍光体は、コーティングを有する蛍光体粒子を有し、前記コーティングは、AlPO4コーティング、Al2O3コーティング、及びSiO2コーティングからなる群から選択された1つ以上のコーティングを有する、請求項9乃至13の何れか一項に記載の蛍光体。
- バックライトユニットとして構成された請求項1乃至8の何れか一項に記載の照明ユニットを有するLCD表示装置。
- 請求項1乃至8の何れか一項に記載の照明ユニットを有する照明器具。
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EP3049505A1 (en) | 2016-08-03 |
EP3049505B1 (en) | 2016-12-14 |
CN105814172A (zh) | 2016-07-27 |
BR112016006754A8 (pt) | 2018-05-29 |
KR20160061393A (ko) | 2016-05-31 |
US20160244664A1 (en) | 2016-08-25 |
BR112016006754A2 (pt) | 2017-08-01 |
JP6368357B2 (ja) | 2018-08-01 |
CN105814172B (zh) | 2018-01-23 |
WO2015044106A1 (en) | 2015-04-02 |
RU2683077C2 (ru) | 2019-03-26 |
RU2016116028A3 (ja) | 2018-05-14 |
RU2016116028A (ru) | 2017-10-31 |
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