| abstract |
The invention provides a biscarbazole compound and an organic electroluminescence device thereof, belonging to the technical field of organic photoelectric materials. The compound has a structure shown in formula (I), and part A in the present invention has the ability to easily accept holes, and the introduction of a bridging structure can increase the molecular weight of the compound on the one hand, so that the obtained material has a high glass transition temperature and can The effect of preventing crystallization, on the other hand, makes this kind of compound have a certain distortion in the three-dimensional structure, and improves its film-forming property. The other end introduces a B-type structure that is easy to accept electrons at a specific position to increase the transport of carriers. The organic electroluminescence device made by using the compound as the host material in the light-emitting layer or the hole blocking layer material has the advantages of low driving voltage and high luminous efficiency, and is an organic light-emitting material with excellent performance. |