| abstract |
The invention discloses a compound containing triarylamine and its application in organic electroluminescent devices. The compound contains a triarylamine structure and has strong electron-rich properties. After connecting the long-chain branched structure of carbazole derivatives , so that the molecules are not easy to crystallize, not easy to aggregate, and have the characteristics of good film-forming properties; the compound of the present invention has electron-rich properties, and the branch chain is an electron-donating group. Because the electron-donating ability of the group is different, the HOMO energy of the material Levels are different, and can be used as materials for different functional layers; in addition, the compound of the present invention has a high triplet energy level, which can effectively block energy loss and facilitate energy transfer. Therefore, after the compound of the present invention is used as an organic electroluminescent functional layer material in an OLED device, the current efficiency, power efficiency and external quantum efficiency of the device are greatly improved; at the same time, the device life is significantly improved. |