申请人:Fukumatsu Takayuki
公开号:US20110037062A1
公开(公告)日:2011-02-17
Disclosed is an organic electroluminescent device (organic EL device) which can achieve high efficiency and long lifetime even when driven at low voltage. The organic El device comprises at least a light-emitting layer and an electron-transporting layer between an anode and a cathode facing each other. The electron-transporting layer consists of two layers, namely, a first electron-transporting layer and a second electron-transporting layer and the first electron-transporting layer and the second electron-transporting layer are arranged sequentially in this order from the light-emitting layer side to the cathode side. The first electron-transporting layer contains an indole derivative in which the ring nitrogen atom is substituted with an aromatic group and an aromatic ring is fused to the indole ring.
本发明公开了一种有机电致发光器件(有机EL器件),即使在低电压驱动下也能实现高效率和长寿命。该有机EL器件包括至少一个发光层和一个电子传输层,位于彼此对面的阳极和阴极之间。电子传输层由两层组成,即第一电子传输层和第二电子传输层,第一电子传输层和第二电子传输层按照从发光层侧到阴极侧的顺序依次排列。第一电子传输层包含一种吲哚衍生物,其中环氮原子被芳香基取代,芳香环融合到吲哚环中。