Patent ID: 7276183

Claim:
A light emitting device comprising: a semiconductor light source that produces a light output of a wavelength of at least about 300 nm; and a wavelength manager, which is located between the semiconductor light source and a light output produced by the light emitting device, comprising a phosphor according to formula (I): [(BvSiO 3 ) x (Mv 2 SiO 3 ) y (Tv 2 (SiO 3 ) 3 ) z ] m .(SiO 2 ) n :Rε, X (I) wherein: x, y and z are each any value such that x+y+z=1; Bv is at least one divalent metal ion; Mv is at least one monovalent alkali metal ion; Tv is at least one trivalent metal ion; Rε is at least one activator selected from Eu 2+ and Mn 2+ ions; X is at least one halide ion; m is 1 or 0, provided that: if m is 1 and provides an amount of silica effective to host useful luminescence, then n>3; or if m is 0,then n is 1.