{HEAD ~ The visible emission} from the activator ions preferably complementing the band edge emission of the LED in order to produce {TAIL ~ an overall white emission} from the LED 
{ HEAD ~ The visible emission } from the activator ions preferably complementing the band edge emission of the LED in order to produce { TAIL ~ an overall white emission } from the LED
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH