Provided is an organic light emitting device including a first electrode; a second electrode opposite to the first electrode; and a first organic material layer and a second organic material layer provided between the first electrode and the second electrode, wherein the first organic material layer includes a compound of Chemical Formula 1:
wherein:
at least one of Xa to Xc is N, and the rest are CR; and
Ar2 to Ar4 are each independently a substituted or unsubstituted aryl or heterocyclic group, and
the second organic material layer includes a compound of
(HAr)
a
-[L1-Ar1-L2-(CN)
b
]
c
Chemical Formula 2:
wherein:
HAr is a substituted or unsubstituted heterocyclic group including at least one or more Ns;
L1 and L2 are each independently a direct bond or a substituted or unsubstituted arylene or divalent heterocyclic group; and
Ar1 is a direct bond, —O—, or a substituted or unsubstituted arylene or divalent heterocyclic group.
提供的是一种有机发光器件,包括第一电极;与第一电极相对的第二电极;以及第一有机材料层和第二有机材料层,它们位于第一电极和第二电极之间。其中,第一有机材料层包括
化学式1的化合物:其中:Xa到Xc中至少有一个是N,其余为CR;Ar2到Ar4各自独立地是取代或未取代的芳基或杂环基;第二有机材料层包括
化学式2的化合物:其中:HAr是取代或未取代的含有至少一个或多个N的杂环基;L1和
L2各自独立地是直接键或取代或未取代的芳撑或二价杂环基;Ar1是直接键,-O-或取代或未取代的芳撑或二价杂环基。