| abstract |
A phosphor with a high light-emitting intensity and indicated by general formula Me a Re b Si c Al d N e O f . Me has Sr as an essential element thereof and can include one or more types of element selected from Na, Li, Mg, Ca, Ba, Sc, Y, and La. Re has Eu as an essential element thereof and can include one or more types of element selected from Mn, Ce, Tb, Yb, and Sm. When composition ratios a, b, c, d, e, and f fulfill a=1−x, b=x, c=(2+2p)×(1−y), d=(2+2p)×y, e=(1+4p)×(1−z), and f=(1+4p)×z, parameters p, x, y, and z fulfill the following: 1.630<p<1.650, 0.005<x<0.300, 0.180<y<0.220, and 0.060<z<0.100. A light-emitting device with high luminance is provided by using this phosphor. |