About: http://webisa.webdatacommons.org/434748659

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	To meet the requirements of cathode of OLED, material capable of injecting electrons into organic electroluminescent is preferable, for example, low work function material such as Ca, Ag, Mg, Al, Li, or alloys thereof.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com