About: http://webisa.webdatacommons.org/99311835

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	Heterojunctions have attractive properties in terms of efficiency, but they add complexity and expense to electronic devices, so until now they mostly pop up in specialty uses such as lasers.
http://www.w3.org/ns/prov#wasQuotedFrom	cleantechnica.com