The light emitting {HEAD ~ device} 1, wherein {TAIL ~ the semiconductor layer} is a GaN layer 
wherein
The light emitting { HEAD ~ device } 1 , wherein { TAIL ~ the semiconductor layer } is a GaN layer
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH