Light emitting device using orange-red phosphor with co-dopants

摘要

Disclosed herein are lighting apparatuses having a light source, a first phosphor, and a second phosphor, wherein the lighting apparatuses exhibit increased R9 values. In some embodiments, the light source is configured to emit radiation having a wavelength of peak emission between about 495 nm and about 500 nm. The first phosphor may have a first wavelength of peak emission between about 495 nm and about 600 nm. The second phosphor may be represented by the formula RE_2-x-yCaMg₂Si₃O₁₂:Ce_x,A_y. In an embodiment, RE is a rare earth metal; A is a co-dopant, x is greater than 0 and less than about 1.0; and y is greater than 0 and less than about 0.2. Also disclosed are phosphor compositions including the first phosphor and the second phosphor, and methods of using the same.