Assertion: solar panel's cell | /r/CapableOf | reach an efﬁciency of 11.7%
Facets:
value: in the tandem device
type: OTHER
Source sentences:
text: With a ﬁll factor (FF) of 76.2%, the Si bottom cell reaches an efﬁciency of 11.7% (± 0.4) in the tandem device, resulting in a cumulative tandem cell efﬁciency of 29.8%.