| abstract |
Provided is an organic light emitting device comprising an anode, a hole transport layer, a light emitting layer, an electron transport layer, and a cathode, wherein the light emitting layer comprises a compound of Chemical Formula 1 and a compound of Chemical Formula 2:wherein:A is a benzene ring;Ar1 and Ar2 are independently a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing one or more of N, O and S;X1 to X3 are independently N or CH, provided that at least one of them is N;L is a substituted or unsubstituted C2-60 heteroarylene or a C6-60 arylene substituted with a C2-20 heteroaryl, the heteroarylene or heteroaryl containing one or more of N, O and S; andAr3 and Ar4 are independently a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing one or more of N, O and S. |