The invention is to provide an organic EL device having a long life time that can reduce the driving voltage of the organic EL device, and to provide a material having a small ionization potential and exhibiting a large hole mobility by using as a layer or a zone. The organic electroluminescence device comprises a pair of electrodes and an organic light emitting layer sandwiched in the electrodes, characterized in that a hole transporting zone provided between the electrodes comprises the phenylenediamine derivative represented by the specific structural formulae, and the phenylenediamine derivative has a hole mobility of 10-4 cm2/V·s or more upon using as a layer or a zone, with the organic light emitting layer containing a charge injection auxiliary.
本发明旨在提供一种具有较长使用寿命的有机电致发光器件,该器件可降低有机电致发光器件的驱动电压,并提供一种具有较小电离电位并通过用作层或区而表现出较大空穴迁移率的材料。该有机电致发光器件包括一对电极和夹在电极中的有机发光层,其特征在于在电极之间设置的空穴传输区包括由具体结构式表示的
苯二胺衍
生物,该
苯二胺衍
生物在用作层或区时具有10-4 cm2/V-s或更高的空穴迁移率,有机发光层含有电荷注入辅助剂。