| abstract |
Provided is an organic electroluminescent device (organic EL device), in which the luminescent efficiency of the device is improved, driving stability is sufficiently ensured, and the structure of the device is simple. This organic EL device is an organic electroluminescent device having a luminescent layer between an anode and a cathode, which are laminated on a substrate, wherein the luminescent layer contains a phosphorescent dopant and an indolocarbazole compound as a host material. Examples of the indolocarbazole compound include compounds represented by formula (1), wherein the ring A and ring B are represented by formulae (1a) and (1b), respectively; Ar represents an aromatic hydrocarbon group or an aromatic heterocyclic group; R represents hydrogen, an alkyl group, or a cycloalkyl group; X represents methine or nitrogen; A represents an aromatic hydrocarbon group, an alkyl group, a cycloalkyl group, or a group represented by formula (1c); and n represents 0 or 1. |