| abstract |
The present invention discloses any one of the following compounds: When the compound of the present invention is applied to an organic electroluminescent device and used as a hole transport layer material, the luminous efficiency of the organic electroluminescent device can be improved to a certain extent, and the start-up voltage can be lowered, the power consumption of the device can be reduced, and the life of the device can be greatly improved. , as a buffer layer material, it can also reduce the startup voltage to a certain extent, improve the luminous efficiency, and prolong the life of the device. |