发明名称 |
FLUORESCENT SUBSTANCE AND PRODUCTION METHOD THEREOF, AND LIGHT EMITTING DEVICE |
摘要 |
<p>Offered is a fluorescent substance consisting of Eu-activated ²-sialon and capable of enhancing the brightness of a light emitting device such as a white LED using blue or ultraviolet light as a light source. The fluorescent substance has as its main constituent a ²-sialon represented by the general formula Si 6-z Al z O z N 8-z and containing Eu, wherein the spin density is 2.0 × 10 17 /g or less as measured by electron spin resonance spectroscopy corresponding to an absorption of g = 2.00 ± 0.02 at 25 °C. In the above fluorescent substance, it is preferable that lattice constant a of the ²-sialon be 0.7608-0.7620 nm, the lattice constant c be 0.2908-0.2920 nm, and the Eu content be 0.1-3 mass%.</p> |
申请公布号 |
EP2093272(A1) |
申请公布日期 |
2009.08.26 |
申请号 |
EP20070832173 |
申请日期 |
2007.11.20 |
申请人 |
DENKI KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
EMOTO, HIDEYUKI;NAGUMO, TOSHIAKI |
分类号 |
C09K11/64;C04B35/597;C04B35/626;C09K11/08;H01L33/00;H01L33/50 |
主分类号 |
C09K11/64 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|