| abstract |
The blue-green phosphors of the examples may be represented by the following formula (1), and the blue-green phosphors and the light-emitting device package including the blue-green phosphors of the examples may have improved light-emitting properties and physical properties due to the influence of cations and anions included in the composition formula. Formula 1 A a B b O c N d C e D f e g : RE h B is at least one or more elements selected from the group consisting of Si, Ge, and Sn; C is at least one element selected from the group consisting of C, Cl, F And Br, D is at least one selected from the group consisting of Li, Na and K, or a mixture thereof, E is at least one or more elements selected from P, As, Bi, Sc, Y and Lu, RE is at least one or more elements selected from the group consisting of Eu, Ce, Sm, Er, Yb, Dy, Gd, Tm, Lu, Pr, Nd, Pm, c? 15, 0? d? 20, 0? e? 10, 0? f? 6, 0? g? 6, 0? |