| 发明名称 | Fluorescent substance, light-emitting device and method for producing fluorescent substance | ||
| 摘要 | The fluorescent substance according to the present disclosure emits luminescence with a peak in the wavelength range of 500 to 600 nm under excitation by light with a peak in the wavelength range of 250 to 500 nm, and has an optical absorption coefficient α560nm of 4×10−5 or less at 560 nm. The substance is represented by the following formula (1): (M1-xCex)2yAlzSi10-zOuNw (1). In the formula, M is a metal element selected from the group consisting of Ba, Sr, Ca, Mg, Li, Na and K; and x, y, z, u and w are variables satisfying the conditions of 0<x≦1, 0.8≦y≦1.1, 2≦z≦3.5, u≦1, 1.8≦z−u and 13≦u+w≦15, respectively. | ||
| 申请公布号 | US8987986(B2) | 申请公布日期 | 2015.03.24 |
| 申请号 | US201313845554 | 申请日期 | 2013.03.18 |
| 申请人 | Kabushiki Kaisha Toshiba | 发明人 | Fukuda Yumi;Matsuda Naotoshi |
| 分类号 | C09K11/77;H05B33/12;H01L33/50 | 主分类号 | C09K11/77 |
| 代理机构 | Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P. | 代理人 | Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P. |
| 主权项 | 1. A fluorescent substance which emits luminescence with a peak in the wavelength range of 500 to 600 nm under excitation by light with a peak in the wavelength range of 250 to 500 nm, which has an optical absorption coefficient α560nm of 4×10−5 or less at 560 nm, and which is represented by the following formula (1): (M1-xCex)2yAlzSi10-zOuNw (1) in which M is a metal element selected from the group consisting of Ba, Sr, Ca, Mg, Li, Na and K; and x, y, z, u and w are variables satisfying the conditions of 0<x≦1, 0.8≦y≦1.1, 2≦z≦3.5, u≦1, 1.8≦z−u and 13≦u+w≦15, respectively. | ||
| 地址 | Tokyo JP | ||