Assertion: watt's year | /r/CapableOf | demonstrate first blue electroluminescence
Facets:
value: in 1971
type: TEMPORAL
value: from zinc-doped gallium nitride
type: OTHER
Source sentences:
text: In 1971, the year after Maruska left for Stanford, his RCA colleagues Pankove and Ed Miller demonstrated the first blue electroluminescence from zinc-doped gallium nitride, though the subsequent device Pankove and Miller built, the first actual gallium nitride light-emitting diode, emitted green light.