The invention is a
phosphor which includes a
phosphor material having a composition represented by a general formula: M(0)aM(1)bM(2)x−(vm+n)M(3)(vm+n)−yOnNz−n, wherein M(0) is one or more elements selected from Li, Na, Be, Mg, Ca, Sr, Ba, Sc, Y, La, Gd and Lu; M(1) is one or more activators selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm and Yb; M(2) is one or more elements selected from Si, Ge, Sn, Ti, Hf and Zr; M(3) is one or more elements selected from Be, B, Al, Ga, In, Tl and Zn; O is
oxygen; N is
nitrogen; and an
atomic ratio of M(0), M(1), M(2), M(3), O and N is adjusted to satisfy the following: x, y and z satisfy 33≦x≦51, 8≦y≦12 and 36≦z≦56; a and b satisfy 3≦a+b≦7 and 0.001≦b≦1.2; m and n satisfy 0.8·me≦m≦1.2·me and 0≦n≦7 in which me=a+b; and v satisfies v={a·v(0)+b·v(1)} / (a+b) (wherein v(0) is a valence of M(0)
ion and v(1) is a valence of M(1)
ion). The invention also relates to a method for producing the
phosphor and a light-emitting device using the phosphor.