Nitride phosphor, method of preparing the same, and white light-emitting device using the same

Abstract

A nitride phosphor represented by Formula 1: M1a-zCezM2b-xM3xNc-yOy,  Formula 1 wherein M1 is at least one metal selected from the group consisting of Sc3+, Y3+, Lu3+, La3+, Pr3+, Sm3+, Gd3+, Tb3+, Yb3+, Dy3+, Eu3+, and Bi3+, M2 is at least one metal selected from the group consisting of Si4+ and Ge4+, M3 is at least one metal selected from the group consisting of Al3+, B3+, and Ga3+, a is equal to or greater than about 1.8 and equal to or less than about 2.2, b is equal to or greater than about 3.8 and equal to or less than about 4.2, c is equal to or greater than about 6.7 and equal to or less than about 7.3, x is equal to or greater than about 0.7 and less than about 3, y is equal to or greater than 0 and less than about 3, and z is greater than 0 and less than about 1.

Dependencies are inferred from the claim text.