| abstract |
The invention belongs to the technical field of organic synthesis, and particularly relates to a phenyl branched light-emitting material and an organic electroluminescent device thereof. In the present invention, through the fine design of branched and twisted hole transport materials, and further through the selection of core light-emitting layer materials, and the introduction of high-refractive, low-absorption cover layer materials, the device can be improved in startup voltage, luminous brightness, current efficiency, In terms of comprehensive performance such as light color and thermal stability, as well as the performance stability in the state of device operation and heat accumulation, there is a significant improvement compared to the existing technology. |