| abstract |
Embodiments of the present invention are directed to heterocyclic compounds and organic light-emitting devices including the heterocyclic compounds. The organic light-emitting devices using the heterocyclic compounds have high-efficiency, low driving voltages, high luminance and long lifespans. nIn some embodiments, for example, the heterocyclic compound is selected from Compound 5, Compound 8, Compound 21, Compound 26, Compound 30, and Compound 47. |