| abstract |
An organic electroluminescent material and an organic electroluminescent device comprising the material, a novel aryl group-dihydrophenanthrene is introduced as one of the core groups, and a dihydrophenanthrene derivative is obtained, and the dihydrophenanthrene derivative has relatively The large molecular weight can increase the glass transition temperature and decomposition temperature of the material, thereby enhancing the thermal stability of the material and prolonging the life of the device; the compound containing dihydrophenanthrene group has excellent hole transport properties and can be used to make organic electroluminescent devices. , can be used as a hole injection layer, hole transport layer, etc. in organic electroluminescent devices, especially as a hole transport layer material in organic electroluminescent devices, to improve the recycling of electrons and holes in OLED devices. Therefore, the driving voltage can be effectively reduced, and the luminous efficiency and service life of the organic light-emitting device can be improved. |