Phosphor composition for lamps

摘要

Phosphor composition (I) for lamps, with a monoclinic crystal lattice (monazite), is of the germanium dioxide-doped lanthanum, gadolinium and/or yttrium phosphate type, with terbium, praseodymium and/or europium as activator. Phosphor composition (I) for lamps, with a monoclinic crystal lattice (monazite), is of the germanium dioxide-doped lanthanum, gadolinium and/or yttrium phosphate type, with terbium, praseodymium and/or europium as activator, of the formula: (1-g)[((1-c-a)*Ln,c*Ce,a*A)PO4] x GeO2; Ln = lanthanum (La), gadolinium (Gd) and/or yttrium (Y); A = terbium (Tb), praseodymium (Pr) and/or europium (Eu) as activator; a, c = 0-1.0; g = over 0 and up to 0.2 .