| 发明名称 |
PHOSPHOR, METHOD FOR PRODUCING THE SAME, AND LIGHT-EMITTING DEVICE USING THE SAME |
| 摘要 |
A present embodiment is to provide a phosphor that has favorable temperature characteristics, that can emit yellow light having excellent color rendering properties, and that has high quantum efficiency. The phosphor exhibits a luminescence peak in a wavelength range of 500 to 600 nm when excited with light having a luminescence peak within a wavelength range of 250 to 500 nm. The phosphor is represented by the following formula (1): ((M1-xCe)x)2yAlzSi10-zOuNw (1) (wherein M includes at least one of Ba, Sr, Ca, Mg, Li, Na, and K, and 0<x≦1, 0.8≦y≦1.1, 2≦z≦3.5, u≦1, 1.8≦z−u, and 13≦u+w≦15 are satisfied). The phosphor has a paramagnetic defect density of 5×1015 per gram or less. |
| 申请公布号 |
US2016083648(A1) |
申请公布日期 |
2016.03.24 |
| 申请号 |
US201514845838 |
申请日期 |
2015.09.04 |
| 申请人 |
Kabushiki Kaisha Toshiba |
发明人 |
FUKUDA Yumi;KATO Masahiro |
| 分类号 |
C09K11/77;H01L33/50 |
主分类号 |
C09K11/77 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A phosphor, exhibiting a luminescence peak in a wavelength range of 500 to 600 nm when excited with light having a luminescence peak within a wavelength range of 250 to 500 nm,
wherein said phosphor is represented by the following formula (1):
((SrpM1-p)1-xCex)2yAlzSi10-zOuNw (1) wherein M is at least one of alkaline earth metals; and 0≦p≦1, 0<x≦1, 0.8≦y≦1.1, 2≦z≦3.5, 0<u≦1, 1.8≦z−u, and 13≦u+w≦15 are satisfied; and said phosphor having paramagnetic defects and a paramagnetic defect density of said phosphor being 5×1014 per gram or less. |
| 地址 |
Minato-ku JP |
