A problem of the invention is to provide an organic EL device having a high efficiency, a low driving voltage and a long life, by combining various materials for organic EL device, which are excellent in an injection or transportation performance of holes or electrons, and in stability and durability in a thin film, so as to enable the respective materials to effectively reveal their characteristics. The invention relates to an organic electroluminescent device including at least an anode electrode, a hole-injecting layer, a hole-transporting layer, an emitting layer, an electron-transporting layer and a cathode electrode in this order, in which the hole-injecting layer contains an arylamine compound having, in its molecule, a structure in which three or more triphenylamine structures are connected through a single bond or a hetero atom-free divalent group; and the hole-transporting layer contains an arylamine compound having two triphenylamine structures in its molecule.
该发明的问题是通过结合对有机EL器件非常优秀的电子空穴注入或输运性能以及在薄膜中的稳定性和耐久性的各种材料,从而使各种材料能够有效地显示其特性,提供一种具有高效率、低驱动电压和长寿命的有机EL器件。该发明涉及一种有机电致发光器件,包括至少一个阳极电极、一个注孔层、一个输运孔层、一个发射层、一个输运电子层和一个阴极电极,其中注孔层包含一种芳基胺化合物,其分子中通过单键或异原子自由二价基连接三个或更多个
三苯胺结构的结构;输运孔层包含一种芳基胺化合物,其分子中有两个
三苯胺结构。