申请人:Hodogaya Chemical Co., Ltd.
公开号:US20140039221A1
公开(公告)日:2014-02-06
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.
本发明的问题是通过组合对有机EL器件具有注入或输运电子空穴的优异材料,以及在薄膜中稳定耐久的材料,从而使各种材料有效地展现其特性,提供一种具有高效率、低驱动电压和长寿命的有机EL器件。本发明涉及一种有机电致发光器件,包括至少依次设置的阳极电极、注入空穴层、输运空穴层、发射层、输运电子层和阴极电极,其中注入空穴层包含一种芳基胺化合物,其分子中通过单键或无杂原子双价基团连接三个或更多个三苯胺结构,而输运空穴层包含一种芳基胺化合物,其分子中有两个三苯胺结构。