| abstract |
There are provided a phosphor, a light emitting device, a surface light source device, a display device and an illumination device. The phosphor includes an α-type Si 3 N 4 crystal structure and includes oxynitride represented by an empirical formula Ca x Eu y M z Si 12−(m+n) Al n+m O n N 16−n , wherein M is at least one selected from a group consisting of Sr, Lu, La and Ba, and satisfies 0.5≦x≦1.1, 0.00005≦y≦0.09, 1.0≦m≦3.6, 0.001≦n≦0.2, and 0.00001≦z≦0.1. |