abstract |
A heterocyclic compound, a composition including the heterocyclic compound, and an organic light-emitting device including the heterocyclic compound are disclosed. The heterocyclic compound is represented by Formula 1: n n n n n n n n n n wherein, X 1 , L 1 , a1, Ar 1 , R 1 to R 6 , b3, b4, and b5 are described herein. |