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;
Ar
1
and Ar
2
are independently a substituted or unsubstituted C
6-60
aryl or C
2-60
heteroaryl containing one or more of N, O and S;
X
1
to X
3
are independently N or CH, provided that at least one of them is N;
L is a substituted or unsubstituted C
2-60
heteroarylene or a C
6-60
arylene substituted with a C
2-20
heteroaryl, the heteroarylene or heteroaryl containing one or more of N, O and S; and
Ar
3
and Ar
4
are independently a substituted or unsubstituted C
6-60
aryl or C
2-60
heteroaryl containing one or more of N, O and S.
提供的是一种有机发光器件,包括阳极、空穴传输层、发光层、电子传输层和阴极,其中发光层包括
化学式1和
化学式2的化合物:其中,A是苯环;Ar1和Ar2分别是取代或未取代的含有N、O和S中的一种或多种的C6-60芳基或C2-60杂芳基;X1至X3分别是N或CH,但至少有一个是N;L是取代或未取代的含有N、O和S中的一种或多种的C2-60杂
芳烃或取代了C2-20杂芳基的C6-60
芳烃,而该杂
芳烃或杂芳基包含一种或多种的N、O和S;Ar3和Ar4分别是取代或未取代的含有N、O和S中的一种或多种的C6-60芳基或C2-60杂芳基。