| 发明名称 |
PHOSPHOR, METHOD FOR PRODUCING PHOSPHOR AND LIGHT EMITTING DEVICE |
| 摘要 |
The present invention provides a phosphor comprising a cerium-activated sialon crystal having a basic composition represented by formula (1):;(Sr1-xCex)αSiβAlγOδNω formula: (1);(wherein, x is 0<x<1, α is 0<α≦3, and β, γ, δ and ω are numbers such that numerical values converted when α is 2 satisfy 5≦β≦9, 1≦γ≦5, 0≦δ≦1.5, and 10≦ω≦20), wherein the phosphor includes particles having a sphericity of 0.65 or more and emits yellow light by being excited by ultraviolet light, violet light or blue light. |
| 申请公布号 |
US2015030855(A1) |
申请公布日期 |
2015.01.29 |
| 申请号 |
US201314383675 |
申请日期 |
2013.03.15 |
| 申请人 |
Kabushiki Kaisha Toshiba ;Toshiba Materials Co., Ltd |
发明人 |
Usui Daichi;Shirakawa Yasuhiro;Takemura Hirofumi;Ishii Tsutomu |
| 分类号 |
C09K11/77;F21V9/16;H01L33/50 |
主分类号 |
C09K11/77 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A phosphor comprising a cerium-activated sialon crystal having a basic composition represented by formula (1):
[Formula 1] (Sr1-xCex)αSiβAlγOδNω (1)(wherein, x is 0<x<1, α is 0<α≦3, and β, γ, δ and ω are numbers such that numerical values converted when α is 2 satisfy 5≦β≦9, 1≦γ≦5, 0≦δ≦1.5, and 10≦ω≦20),
wherein the phosphor includes particles having a sphericity of 0.65 or more and emits yellow light by being excited by ultraviolet light, violet light or blue light. |
| 地址 |
Tokyo JP |
