About: http://webisa.webdatacommons.org/372803762

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	For example, the n-type semiconducting upper layer 13 can be formed more inexpensively by diffusing an n-type impurity such as silicon (Si) or tin (Sn) into the surface of a semi-insulating GaAs wafer, instead of by epitaxial growth.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com