| abstract |
A phosphor is represented by Ml(X1)M2(X2)M312(O, N)16, wherein Ml denotes one or more metal elements selected from the group consisting of Li, Mg, Ca, Sr, Ba, Y, La, Gd and Lu, M2 one or more metal elements selected from the group consisting of Ce, Pr, Eu, Tb, Yb and Er, M3 one or more metal elements selected from the group consisting of Si, Ge, Sn, B, Al, Ga and In, and x1 and x2 satisfy 0 < x1, x2 < 2 and 0 < x1 + x2 < 2. The phosphor may be an α-sialon-based phosphor containing at least one of Sr and Ba in an amount of 5 mass % or less. Each of the phosphors is manufactured by a method that includes firing a raw material mixture of the phosphor in a nonoxidizing atmosphere at 1600 to 2200°C. By combining each of the phosphors with a light-emitting device, it is made possible to provide a light-emitting apparatus. |