Disclosed is an organic electroluminescent device (organic EL device) that is improved in luminous efficiency, sufficiently secures driving stability, and has a simple construction. The device is an organic electroluminescent device having organic layers including a light-emitting layer between an anode and a cathode laminated on a substrate, in which a carborane compound is incorporated into at least one layer of the organic layers, or is incorporated as a host material into a light-emitting layer containing a phosphorescent light-emitting dopant and the host material. The carborane compound has a structure in which a N-containing fused aromatic ring is bonded to a carborane ring. The N-containing fused aromatic ring is a quinoline ring or has a structure obtained by substituting 1 to 3 ring-forming carbon atoms in a quinoline ring with N atoms.
本发明公开了一种有机电致发光器件(有机EL器件),其具有提高的发光效率、足够的驱动稳定性和简单的结构。该器件是一种有机电致发光器件,包括在基板上层叠的阳极和阴极之间的有机层,其中至少一个有机层中掺入了碳
硼烷化合物,或者将碳
硼烷化合物作为宿主材料掺入含有
磷光致发光剂和宿主材料的发光层中。碳
硼烷化合物具有将含N的融合芳香环连接到碳
硼烷环的结构。含N的融合芳香环是
喹啉环或通过将
喹啉环中1至3个环形碳原子替换为N原子获得的结构。