申请人:Hodogaya Chemical Co., Ltd.
公开号:EP3291323A1
公开(公告)日:2018-03-07
An organic electroluminescent device having low driving voltage, high luminous efficiency, and a long lifetime is provided by combining various materials for an organic electroluminescent device, which are excellent, as materials for an organic electroluminescent device having high luminous efficiency and high durability, in hole and electron injection/transport performances, electron blocking performance, and stability and durability in a thin film state, so as to allow the respective materials to effectively reveal their characteristics.
In the organic electroluminescent device having at least an anode, a hole injection layer, a first hole transport layer, a second hole transport layer, a light emitting layer, an electron transport layer, and a cathode in this order, the hole injection layer includes an arylamine compound of the following general formula (1) and an electron acceptor.
In the formula, Ar1 to Ar4 may be the same or different, and represent a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group.
作为具有高发光效率和高耐久性的有机电致发光器件的材料,各种有机电致发光器件材料在空穴和电子注入/传输性能、电子阻断性能以及薄膜状态下的稳定性和耐久性方面都非常出色,通过将这些材料组合在一起,可以提供一种具有低驱动电压、高发光效率和长寿命的有机电致发光器件,从而使各种材料有效地显示出各自的特性。
有机电致发光器件至少具有阳极、空穴注入层、第一空穴传输层、第二空穴传输层、发光层、电子传输层和阴极,空穴注入层依次包括以下通式(1)的芳基胺化合物和电子受体。
式中,Ar1 至 Ar4 可以相同或不同,代表取代或未取代的芳香烃基团、取代或未取代的芳香杂环基团或取代或未取代的缩合多环芳香基团。