A light emitting device includes an emissive substance between an anode and {HEAD ~ cathode} that emits light upon application of {TAIL ~ electrical energy} 
A light emitting device includes an emissive substance between an anode and { HEAD ~ cathode } that emits light upon application of { TAIL ~ electrical energy }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL