申请人:Wuhan China Star Optoelectronics Technology Co., Ltd.
公开号:US20180331302A1
公开(公告)日:2018-11-15
The present invention relates to a display technical field, especially to an organic light emitting device which includes from the bottom to the top: a substrate, an anode layer, a hole injection layer, a hole transport layer, an exciton blocking layer, an organic light emitting layer, an electron transport layer, an electron injection layer and a cathode layer; the material of the organic light emitting layer includes benzimidazole derivative as illustrated in Formula 1,
wherein P1, P2 and P3 are benzene rings, and at least one of R
1
˜R
12
is a substituent having hole transport ability. The present invention further provides preparing methods for the organic light emitting layer and device.
本发明涉及显示技术领域,特别是一种有机发光器件,其从底部到顶部包括:基板、阳极层、空穴注入层、空穴传输层、激子阻挡层、有机发光层、电子传输层、电子注入层和阴极层;有机发光层的材料包括如图1所示的苯并咪唑衍生物,
其中P1、P2和P3为苯环,R1~R12中至少一个是具有空穴传输能力的取代基。本发明还提供了有机发光层和器件的制备方法。