Provided are an organic electroluminescence device that not only provides high efficiency but also has a long lifetime, and an aromatic amine derivative that realizes the device. The organic electroluminescence device includes an aromatic amine derivative, including at least one substituent A having dibenzofuran and at least one substituent B selected from groups each having dibenzofuran or carbazole, in a molecule thereof, in which the substituent A and the substituent B include groups different from each other, and the substituent A and the substituent B are bonded to the same nitrogen atom, or different nitrogen atoms, in the molecule. The molecules of the aromatic amine derivative hardly crystallize, which improves a yield in the production of the organic electroluminescence device. In the organic electroluminescence device, including an organic thin film layer formed of one or more layers including at least a light emitting layer, the organic thin film layer being interposed between a cathode and an anode, the aromatic amine derivative is contained in at least one layer, particularly a hole transport layer, in the organic thin film layer.
本文提供了一种不仅效率高而且寿命长的有机电致发光器件,以及实现该器件的芳香胺衍
生物。该有机电致发光器件包括芳香胺衍
生物,在其分子中包括至少一个具有
二苯并呋喃的取代基 A 和至少一个选自各自具有
二苯并呋喃或
咔唑的基团的取代基 B,其中取代基 A 和取代基 B 包括彼此不同的基团,并且取代基 A 和取代基 B 与分子中的相同氮原子或不同氮原子键合。芳香胺衍
生物的分子几乎不会结晶,从而提高了有机电致发光器件的产量。在有机电致发光器件中,包括由一层或多层有机薄膜层(其中至少包括一个发光层)形成的有机薄膜层,该有机薄膜层位于阴极和阳极之间,芳香族胺衍
生物包含在有机薄膜层中的至少一层中,尤其是空穴传输层中。