Assertion: film solar cell | /r/CapableOf | reach 18.7 percent efficiency
Facets:
value: in the field
type: LOCATION
Source sentences:
text: CIGS thin-film solar cells have reached 21.7 percent efficiency in laboratory settings and 18.7 percent efficiency in the field, making CIGS a leader among alternative cell materials and a promising semiconducting material in thin-film technologies.