Assertion: germanium | /r/HasProperty | the substrate of the wafers
Facets:
Source sentences:
text: Germanium is the substrate of the wafers for high-efficiency multijunction photovoltaic cells for space applications.
text: Germanium is the substrate of the wafers for high-efficiency multijunction photovoltaic cells for space applications.
text: Germanium is the substrate of the wafers for high-efficiency multijunction photovoltaic cells for space applications.