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