JP4199267B2 - 蛍光体、その製造方法、および発光装置 - Google Patents
蛍光体、その製造方法、および発光装置 Download PDFInfo
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- JP4199267B2 JP4199267B2 JP2006197293A JP2006197293A JP4199267B2 JP 4199267 B2 JP4199267 B2 JP 4199267B2 JP 2006197293 A JP2006197293 A JP 2006197293A JP 2006197293 A JP2006197293 A JP 2006197293A JP 4199267 B2 JP4199267 B2 JP 4199267B2
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- ZCDKXVBFDOAYIT-UHFFFAOYSA-N C(C1)C2CCCC=CC1C2 Chemical compound C(C1)C2CCCC=CC1C2 ZCDKXVBFDOAYIT-UHFFFAOYSA-N 0.000 description 1
- KYKMKSLKFQSDER-UHFFFAOYSA-N C(C1)C2CCCCCCCCC1C2 Chemical compound C(C1)C2CCCCCCCCC1C2 KYKMKSLKFQSDER-UHFFFAOYSA-N 0.000 description 1
- RIHXBQAWCSCMPZ-VNKDHWASSA-N C=C/C=C/C=C/C=C1C=CC=C1 Chemical compound C=C/C=C/C=C/C=C1C=CC=C1 RIHXBQAWCSCMPZ-VNKDHWASSA-N 0.000 description 1
- PHDXVSVICDIHTP-UDDWXQOTSA-N CC/C=C/CC1[C@H](C)CC(C)[C@H](C)C1 Chemical compound CC/C=C/CC1[C@H](C)CC(C)[C@H](C)C1 PHDXVSVICDIHTP-UDDWXQOTSA-N 0.000 description 1
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Description
(Sr a1 ,Ba b1 ,Ca c1 ,Tb v1 ,Eu w1 ) 2 SiO 4 (A)
ここで、a1、b1、c1およびv1、w1は、下記数式で表わされる関係を満たす値である。
a1+b1+c1+v1+w1=1 (1); 0≦a1/(1−v1−w1)≦1 (2)
0≦b1/(1−v1−w1)≦1 (3); 0≦c1/(1−v1−w1)≦1 (4)
0<v1≦0.15 (5); 0<w1≦0.05 (6)
(Sr a1 ,Ba b1 ,Ca c1 ,Tb v1 ,Eu w1 ) 2 SiO 4 (A)
ここで、a1、b1、c1およびv1、w1は、下記数式で表わされる関係を満たす値である。
a1+b1+c1+v1+w1=1 (1); 0≦a1/(1−v1−w1)≦1 (2)
0≦b1/(1−v1−w1)≦1 (3); 0≦c1/(1−v1−w1)≦1 (4)
0<v1≦0.15 (5); 0<w1≦0.05 (6)
(Sr a2 ,Ba b2 ,Ca c2 ,Tb v2 ,Eu w2 ,M v2 ) 2 SiO 4 (B)
ここで、MはLi,Na,K,RbおよびCsから選択される少なくとも1種であり、a2、b2、c2およびv2、w2は、下記数式で表わされる関係を満たす値である。
a2+b2+c2+2v2+w2=1 (7)
0≦a2/(1−2v2−w2)≦1 (8)
0≦b2/(1−2v2−w2)≦1 (9)
0≦c2/(1−2v2−w2)≦1 (10)
0<v2≦0.15 (11), 0<w2≦0.05 (12)
(Sr a2 ,Ba b2 ,Ca c2 ,Tb v2 ,Eu w2 ,M v2 ) 2 SiO 4 (B)
ここで、MはLi,Na,K,RbおよびCsから選択される少なくとも1種であり、a2、b2、c2およびv2、w2は、下記数式で表わされる関係を満たす値である。
a2+b2+c2+2v2+w2=1 (7)
0≦a2/(1−2v2−w2)≦1 (8)
0≦b2/(1−2v2−w2)≦1 (9)
0≦c2/(1−2v2−w2)≦1 (10)
0<v2≦0.15 (11), 0<w2≦0.05 (12)
本発明の一態様にかかる蛍光体の製造方法は、前述の蛍光体の製造方法であって、
混合原料を容器に収容し、N2/H2またはAr/H2の還元性雰囲気中で熱処理して一次焼成品を得る工程と、
前記一次焼成品を粉砕して容器に収容する工程と、
前記粉砕された一次焼成品が収容された容器を炉内に配置し、不活性ガスで置換する工程と、
前記一次焼成品を、水素濃度5%以上100%未満のN2/H2またはAr/H2の還元性雰囲気中で熱処理して、二次焼成品を得る工程
を具備することを特徴とする。
前記発光素子から発せられる光を受ける蛍光体を含む蛍光体層とを具備し、
前記蛍光体の少なくとも一部は、前述の蛍光体であることを特徴とする。
上記一般式(A)中、a1、b1、c1、v1、およびw1は、以下の数式で表わされる関係を満たす値である。
0≦b1/(1−v1−w1)≦1 (3); 0≦c1/(1−v1−w1)≦1 (4)
0<v1≦0.15 (5); 0<w1≦0.05 (6)
正ケイ酸アルカリ土類化合物中においては、SrとCaとBaとは、完全に固溶した状態で存在する。この条件と、数式(1)、(5)および(6)とによって、アルカリ土類金属含有量に関する数値a1,b1およびc1の範囲が決定される。すなわち、数式(2)、(3)、および(4)は、こうした条件によって導き出される。
MはLi,Na,K,RbおよびCsから選択される少なくとも1種である。また、a2、b2、c2、v2、およびw2は、下記数式で表わされる関係を満たす値である。
0≦a2/(1−2v2−w2)≦1 (8)
0≦b2/(1−2v2−w2)≦1 (9)
0≦c2/(1−2v2−w2)≦1 (10)
0<v2≦0.15 (11), 0<w2≦0.05 (12)
各元素の含有量を分析するにあたっては、まず、合成された蛍光体をアルカリ融解する。これを、例えばエスアイアイ・ナノテクノロジー(株)SPS1200AR等により内部標準のICP発光分光法にて分析を行なう。こうして、前記一般式(B)で表わされる蛍光体の組成が得られる。
(Sr0.885,Ba0.06,Tb0.05,Eu0.005)2SiO4蛍光体を調製した。原料粉末としては、SrCO3粉末55.8g、BaCO3粉末5.0g、SiO2粉末13.5g、Tb4O7粉末4.0gおよびEu2O3粉末0.4gを用意した。さらに、結晶成長剤として、0.6gのNH4Clを添加して、ボールミルで均一に混合した。
204…反射面; 205…凹部; 206…発光チップ
207…ボンディングワイヤ; 208…ボンディングワイヤ; 209…蛍光層
210…蛍光体; 211…樹脂層;
100…樹脂ステム; 101…リード
102…リード; 103…樹脂部; 104…反射面; 105…開口部
106E…ツェナー・ダイオード; 106F…半導体発光素子; 107…接着剤
109…ボンディングワイヤ; 110…蛍光体; 111…封止体
122…バッファ層; 123…n型コンタクト層; 124…活性層
125…p型クラッド層; 126…p型コンタクト層; 127…n側電極
128…p側電極; 132…n型クラッド層; 138…透光性基板
142…バンプ; 144…バンプ; 150…n型シリコン基板
152…p型領域; 154…p側電極; 156…n側電極; 158…n側電極
160…配線層; 162…高反射膜
50、50’…リード; 51…半導体発光素子; 52…マウント材
53…ボンディングワイヤ; 54…プレディップ材; 55…キャスティング材。
Claims (10)
- 主結晶相と付活剤とを含有する単一組成の物質からなり、370nm以上460nm以下の領域に主発光ピークを有する光で励起した際、540nm以上550nm以下の波長領域における狭帯域発光スペクトルと、500nm以上600nm以下の波長領域における広帯域発光スペクトルとを示し、下記一般式(A)で表わされる組成を有する化合物であることを特徴とする蛍光体。
(Sr a1 ,Ba b1 ,Ca c1 ,Tb v1 ,Eu w1 ) 2 SiO 4 (A)
ここで、a1、b1、c1およびv1、w1は、下記数式で表わされる関係を満たす値である。
a1+b1+c1+v1+w1=1 (1); 0≦a1/(1−v1−w1)≦1 (2)
0≦b1/(1−v1−w1)≦1 (3); 0≦c1/(1−v1−w1)≦1 (4)
0<v1≦0.15 (5); 0<w1≦0.05 (6) - 正ケイ酸アルカリ土類化合物と付活剤とを含有する物質からなり、370nm以上460nm以下の領域に主発光ピークを有する光で励起した際、540nm以上550nm以下の波長領域における狭帯域発光スペクトルと、500nm以上600nm以下の波長領域における広帯域発光スペクトルとを示し、下記一般式(A)で表わされる組成を有する化合物であることを特徴とする蛍光体。
(Sr a1 ,Ba b1 ,Ca c1 ,Tb v1 ,Eu w1 ) 2 SiO 4 (A)
ここで、a1、b1、c1およびv1、w1は、下記数式で表わされる関係を満たす値である。
a1+b1+c1+v1+w1=1 (1); 0≦a1/(1−v1−w1)≦1 (2)
0≦b1/(1−v1−w1)≦1 (3); 0≦c1/(1−v1−w1)≦1 (4)
0<v1≦0.15 (5); 0<w1≦0.05 (6) - 前記一般式(A)におけるb1,c1,v1、w1は、以下の範囲内であることを特徴とする請求項1または2に記載の蛍光体。
0≦b1/(1−v1−w1)≦0.2 (3a)
0≦c1/(1−v1−w1)≦0.9 (4a)
0<v1≦0.1 (5a); 0<w1≦0.01 (6a) - 主結晶相と付活剤とを含有する単一組成の物質からなり、370nm以上460nm以下の領域に主発光ピークを有する光で励起した際、540nm以上550nm以下の波長領域における狭帯域発光スペクトルと、500nm以上600nm以下の波長領域における広帯域発光スペクトルとを示し、下記一般式(B)で表わされる組成を有する化合物であることを特徴とする蛍光体。
(Sr a2 ,Ba b2 ,Ca c2 ,Tb v2 ,Eu w2 ,M v2 ) 2 SiO 4 (B)
ここで、MはLi,Na,K,RbおよびCsから選択される少なくとも1種であり、a2、b2、c2およびv2、w2は、下記数式で表わされる関係を満たす値である。
a2+b2+c2+2v2+w2=1 (7)
0≦a2/(1−2v2−w2)≦1 (8)
0≦b2/(1−2v2−w2)≦1 (9)
0≦c2/(1−2v2−w2)≦1 (10)
0<v2≦0.15 (11), 0<w2≦0.05 (12) - 正ケイ酸アルカリ土類化合物と付活剤とを含有する物質からなり、370nm以上460nm以下の領域に主発光ピークを有する光で励起した際、540nm以上550nm以下の波長領域における狭帯域発光スペクトルと、500nm以上600nm以下の波長領域における広帯域発光スペクトルとを示し、下記一般式(B)で表わされる組成を有する化合物であることを特徴とする蛍光体。
(Sr a2 ,Ba b2 ,Ca c2 ,Tb v2 ,Eu w2 ,M v2 ) 2 SiO 4 (B)
ここで、MはLi,Na,K,RbおよびCsから選択される少なくとも1種であり、a2、b2、c2およびv2、w2は、下記数式で表わされる関係を満たす値である。
a2+b2+c2+2v2+w2=1 (7)
0≦a2/(1−2v2−w2)≦1 (8)
0≦b2/(1−2v2−w2)≦1 (9)
0≦c2/(1−2v2−w2)≦1 (10)
0<v2≦0.15 (11), 0<w2≦0.05 (12) - 前記540nm以上550nm以下の波長領域の狭帯域発光スペクトルは、テルビウムに起因する発光であることを特徴とする請求項1乃至5のいずれか1項に記載の蛍光体。
- 請求項1乃至6のいずれか1項に記載の蛍光体の製造方法であって、
混合原料を容器に収容し、N2/H2またはAr/H2の還元性雰囲気中で熱処理して一次焼成品を得る工程と、
前記一次焼成品を粉砕して容器に収容する工程と、
前記粉砕された一次焼成品が収容された容器を炉内に配置し、不活性ガスで置換する工程と、
前記一次焼成品を、水素濃度5%以上100%未満のN2/H2またはAr/H2の還元性雰囲気中で熱処理して、二次焼成品を得る工程
を具備することを特徴とする蛍光体の製造方法。 - 370nm以上460nm以下の波長領域に主発光ピークを有する光を発する発光素子と、
前記発光素子から発せられる光を受ける蛍光体を含む蛍光体層とを具備し、
前記蛍光体の少なくとも一部は、請求項1乃至6のいずれか1項に記載の蛍光体であることを特徴とする発光装置。 - 前記蛍光体層は、580nm以上680nm以下の領域に主発光ピークを有する蛍光体を含むことを特徴とする請求項8に記載の発光装置。
- 前記蛍光体層は、430nm以上510nm以下の領域に主発光ピークを有する蛍光体を含むことを特徴とする請求項8または9に記載の発光装置。
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US11/626,229 US7498736B2 (en) | 2006-07-19 | 2007-01-23 | Luminescent material |
DE102007011348A DE102007011348A1 (de) | 2006-07-19 | 2007-03-08 | Lumineszenzmaterial |
CN2007101370557A CN101108965B (zh) | 2006-07-19 | 2007-07-19 | 荧光材料、其制造方法及发光装置 |
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JP4314279B2 (ja) * | 2007-02-01 | 2009-08-12 | 株式会社東芝 | 蛍光体、その製造方法、および発光装置 |
JP5270862B2 (ja) * | 2007-05-15 | 2013-08-21 | 信越石英株式会社 | 銅含有シリカガラス及びその製造方法、並びにそれを用いたキセノンフラッシュランプ |
JP4871897B2 (ja) * | 2008-03-03 | 2012-02-08 | シーアイ化成株式会社 | 間接照明器具 |
JP6008073B2 (ja) * | 2011-06-23 | 2016-10-19 | 学校法人日本大学 | 蛍光体製造方法 |
US8907319B2 (en) * | 2011-12-12 | 2014-12-09 | Lg Innotek Co., Ltd. | Light emitting device package |
US9668643B2 (en) | 2011-12-29 | 2017-06-06 | Cook Medical Technologies Llc | Space-optimized visualization catheter with oblong shape |
EP2797491B1 (en) | 2011-12-29 | 2018-05-30 | Cook Medical Technologies LLC | Space-optimized visualization catheter with camera train holder |
EP3150106B1 (en) | 2011-12-29 | 2024-03-27 | Cook Medical Technologies LLC | Space-optimized visualization catheter having a camera train holder in a catheter with off-centered lumens |
US20160222288A1 (en) * | 2013-09-13 | 2016-08-04 | Ube Material Industries, Ltd. | Method for producing silicate phosphor |
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