| abstract |
The invention provides a material for an organic electroluminescence device and an organic electroluminescence device comprising the same, belonging to the technical field of organic electroluminescence. The material for an organic electroluminescent device provided by the present invention includes a host material and a dopant material, and the dopant material is increased by connecting groups such as aryl, heteroaryl or fluorene in the host structure of cyclopropane, on the one hand. The molecular weight of the compound is increased, so that it has a high glass transition temperature, and on the other hand, the conductivity of the compound is increased, and the migration rate of carriers is increased, thereby reducing the driving voltage of the organic electroluminescent device and increasing its life. The combination of the dopant material of the present invention and the benzidine host material with a specific structure can improve the overall electrical conductivity and the overall thermal stability, reduce the driving voltage of the organic electroluminescence device, and further improve the luminescence of the organic electroluminescence device. performance. |