About: http://webisa.webdatacommons.org/176910119

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	On the other hand there is a drawback: currently their efficiency is about 40 percent lower than in conventional solar cells.
http://www.w3.org/ns/prov#wasQuotedFrom	phys.org