| abstract |
A red phosphor including the composition represented by the following general formula.n n( x−a )MgO.( a /2)Sc 2 O 3 .y MgF 2 .c CaF 2 .(1− b )GeO 2 .( b /2)M 2 O 3 :z Mn 4+ n n where x, y, z, a, b, and c satisfy 2.0≦x≦4.0, 0<y<1.5, 0<z<0.05, 0≦a<0.5, 0<b<0.5, 0≦c<1.5, and y+c<1.5, and M is at least one element selected from the group consisting of Al, Ga, and In. |