An organic light-emitting device comprises: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, wherein the organic layer comprises an emission layer and a heterocyclic compound of Formula 1:
wherein a1 to a3 satisfy a1 + a2 + a3 ≥ 1.
一种有机发光器件包括:第一电极;面向第一电极的第二电极;以及位于第一电极和第二电极之间的有机层,其中有机层包括发射层和式 1 的
杂环化合物:
其中 a1 至 a3 满足 a1 + a2 + a3 ≥ 1。