abstract |
According to the present invention, the luminous efficiency and luminous intensity of the oxynitride phosphor and the light emitting device can be improved. The sialon phosphor 7 of the present invention is represented by general formula Ca x (Si, Al) 12 (O, N) 16 : Eu 2 + y , wherein x is 0.75 to 1.0 and y is 0.04 to 0.25 It is an oxynitride phosphor whose main phase has alpha sialon crystal structure. |