| abstract |
Abstract The invention provides, inter alia for the application in a lighting unit, a phosphorus having the formula with m = selected from the group consisting of ca, sr, and divalent ba; z = selected from the group consisting of monovalent na, k, and rb; b = selected from the group consisting of divalent mg, mn, zn, and cd; c = selected from the group consisting of b, al, and ga trivalent; d = selected from the group consisting of itself, ge, ti, and hf tetravalentes; a = selected from the group consisting of li, and cu monovalents; e = selected from the group consisting of p, v, nb, and ta; es = selected from the group consisting of bivalent eu, sm, and yb; re = selected from the group consisting of ce, pr, nd, sm, i, gd, tb, dy, ho, er, and tm trivalent; 0 = x = 0.2; 0 = y = 0.2; 0 <x + y = 0.4; 0 = z <1; x + y + z <1; 0 = n = 0.75; 0 = a = 2 (such as 0 = b = 0.5); 0 = b = 2; 0 = c = 4; 0 = d = 4; 0 = e = 4; a + b = 2; c + d + e = 4; and a + 2b + 3c + 4d + e + y - z = 16 - n. |