| abstract |
The present invention provides a light-emitting auxiliary material, a preparation method and application thereof, wherein the light-emitting auxiliary material has the structure shown in the following formula I. The light-emitting auxiliary material of the invention is matched with the red light dual-host material, and the prepared organic electroluminescent device has high turn-on voltage and lower driving voltage, and retains the device advantages of high efficiency and long life of the dual-host red light device . |