By using {HEAD ~ a metal oxide matrix} that has {TAIL ~ these elements}, particularly strong light emitting can be achieved 
has
By using { HEAD ~ a metal oxide matrix } that has { TAIL ~ these elements } , particularly strong light emitting can be achieved
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH