Assertion: germanium | /r/ObjectUse | used as dopant
Facets:
value: in fiber optic glasses
type: LOCATION
value: in semiconductor devices
type: LOCATION
value: in activating conduction
type: TEMPORAL
Source sentences:
text: Germanium is a key material in modern material science and society: it is used as a dopant in fiber optic glasses and in semiconductor devices, both in activating conduction in layers and also as a substrate for III–V epitaxy.