| abstract |
Embodiments of the invention include a wavelength-converting material defined by AE 3-x1-y+z nRE 3-x2+y-z n[Si 9-w nAl w n(N 1-y nC y n) [4] n(N 16-z-w nO z+w n) [2] n]:Eu x1 n,Ce x2, nwhere AE = Ca, Sr, Ba; RE = Y, Lu, La, Sc; 0 ≤ x1 ≤ 0.18; 0 ≤ x2 ≤ 0.2; x1 + x2 ＞ 0; 0 ≤ y ≤ 1; 0 ≤ z ≤ 3; 0 ≤ w ≤ 3. |