| 摘要 |
Disclosed is an organic electroluminescent device (organic EL device) that is improved in luminous efficiency, sufficiently secures driving stability, and has a simple configuration. This organic EL device is constituted of an anode, organic layers comprising a phosphorescent light-emitting layer, and a cathode piled one upon another on a substrate and at least one organic layer selected from a light-emitting layer, an electron-transporting layer, and a hole-blocking layer contains an indolocarbazole compound represented by general formula (1). In the case where the indolocarbazole compound is incorporated in the light-emitlting layer containing a phosphorescent dopant and a host material, it is incorporated as the host material. Some of such indolocarbazole compounds are represented by the following formula (2): wherein each of A 1 and A 2 is an aromatic hydrocarbon group; each of B 1 and B 2 is an aromatic heterocyclic group; each of R 1 to R 3 is a hydrogen atom, an alkyl group, a cycloalkyl group, an aromatic hydrocarbon group, or an aromatic heterocyclic group; m is an integer of 1 to 3; and n is an integer of 0 to 3. |
