| abstract |
An organic light-emitting medium which contains a pyrene derivative represented by formula (1) and a phenyl-substituted anthracene derivative represented by formula (2).n(In the formulae, each of Ar 1 -Ar 4 independently represents a substituted or unsubstituted aryl group having 6-30 ring-forming carbon atoms or a substituted or unsubstituted heteroaryl group having 5-20 ring-forming carbon atoms.) |