| 摘要 |
According to one embodiment, the luminescent material exhibits a luminescence peak in a wavelength ranging from 500 to 600 nm when excited with light having an emission peak in a wavelength ranging from 250 to 500 nm. The luminescent material has a composition represented by Formula 1 below:
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ (M 1-x Ce x ) 2y Al z Si 10-z O u N w €ƒ€ƒ€ƒ€ƒ€ƒFormula 1
wherein M represents Sr and a part of Sr may be substituted by at least one selected from Ba, Ca, and Mg; x, y, z, u, and w satisfy following conditions:
0<x‰¤1, 0.8‰¤y‰¤1.1, 2‰¤z‰¤3.5, u‰¤1
1.8‰¤z-u, and 13‰¤u+w‰¤15. |
