公开(公告)号：US11424418B2

公开(公告)日：2022-08-23

申请号：US16848392

申请日：2020-04-14

申请人： SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.

发明人： Jianhua Cao ,  Zhe Shao ,  Yan Sui ,  Minhui Jia ,  Shibo Wang ,  Weizhuang He

IPC分类号： H01L51/00 ,  H01L51/50 ,  H01L51/56

摘要： The present invention relates to an organic electroluminescent material, an organic electroluminescent device, and a method for preparing the organic electroluminescent device. Due to comprising an organic compound A with 3.0 eV>ET≥2.0 eV and a compound B of M(LA)x(LB)y(LC)z, the organic electroluminescent material of the present invention has the advantages of an increased luminescence lifetime and/or a reduced operating voltage on the basis of maintaining other electronic properties at a certain level.