| abstract |
The present invention provides a light-emitting auxiliary material, and the light-emitting auxiliary material has the structure of formula (I). The organic electroluminescence auxiliary material containing triarylamine functional groups provided by the present invention greatly improves hole transport efficiency and electron blocking ability, and the charge balance of holes and electrons in the light-emitting layer is increased, so that no holes The surface of the transport layer, but the inside of the light-emitting layer, is well formed to emit light, so as to maximize the efficiency and life. Introducing benzo five-membered (hetero) ring, six-membered heterocyclic ring and other structures, reducing molecular symmetry, increasing molecular conformation yield improved. Therefore, the use of the organic light-emitting compound of the present invention in an organic light-emitting device can improve characteristics such as luminous efficiency, driving voltage and service life. |