| abstract |
The invention provides, amongst others for application in a lighting unit, a phosphor selected from the class of: M 2 D 2 C 2-2b B b A 2 N 6 :Ln (I) with M = selected from the group consisting of divalent Ca, Sr, and Ba; D = selected from the group consisting of monovalent Li, divalent Mg, Mn, Zn, Cd, and trivalent Al and Ga; C = selected from the group consisting of monovalent Li and Cu; B = selected from the group consisting of divalent Mg, Zn, Mn and Cd; A = selected from the group consisting of tetravalent Si, Ge, Ti, and Hf; Ln = selected from the group consisting of ES and RE; ES = selected from the group consisting of divalent Eu, Sm and Yb; RE = selected from the group consisting of trivalent Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, and Tm; and 0 ≤ b ≤ 1. |