PHOSPHOR CONVERTED LED

摘要

The invention is directed to a light emitting comprising a blue emitting LED, a first phosphor layer exited at the emitting wavelength of the LED, which phosphor has an emission wavelength within a range of between 500 nm and 560 nm, and a second phosphor layer having a color point u´ in the range between 0.24 and 0.35 and a peak emission of the phosphor layer of ?p > 600nm of the emission spectra,especially a pcLED comprising a combination of a green emitting luminescent ceramic material and a second phosphor material having a broad emission spectra. The second phosphor material can comprise a compound of the general formula M1-x-y-zSi1+zAl1-zN3-zOz:Eu2+ xCe2+ y, whereby M is selected from the group consisting of Ca, Sr or mixtures thereof and 0.0001 = x = 0.005; 0.001 = y = 0.05and 0 = z = 0.25.