| 简介 |
PROBLEM TO BE SOLVED : To provide a highly efficient light-emitting device using a sialon-based phosphor.
SOLUTION : A light-emitting device comprises : a light-emitting element for emitting light having a wavelength of 250 nm to 500 nm; and a phosphor layer disposed on the light-emitting element. The phosphor layer has a composition expressed by the following general formula : (M1-x1Eux1)3-ySi13-zAl3+zO2+uN21-w (1) (where, M is an element selected from a group IA element, a group IIA element, a group IIIA element, a group IIIB element excluding Al, a rare-earth element and a group IVB element, and x1, y, z, u and w meet the following relationships : 0
|
客服热线：
手机版
二维码
