申请人:Wuhan China Star Optoelectronics Technology Co., Ltd.
公开号:US10825994B2
公开(公告)日:2020-11-03
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 R1˜R12 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,尤其涉及一种有机发光器件,该器件自下而上依次包括:基底、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;所述有机发光层的材料包括如式1所示的苯并咪唑衍生物、
其中 P1、P2 和 P3 是苯环,R1˜R12 中至少有一个是具有空穴传输能力的取代基。本发明进一步提供了有机发光层和器件的制备方法。