About: http://webisa.webdatacommons.org/324844248

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	Solar cells are made of a semi-conductor material, such as silicon, specially treated to form an electric field, positive on one side and negative on the other.
http://www.w3.org/ns/prov#wasQuotedFrom	missouri.edu