| abstract |
The invention relates to an organic compound with triazine and benzimidazole as the core and its application on OLED devices. The compound of the invention has high glass transition temperature and molecular thermal stability; low absorption in the field of visible light, low refractive index High, after being applied to the CPL layer of the OLED device, it can effectively improve the light extraction efficiency of the OLED device; the compound of the present invention also has a deep HOMO energy level and high electron mobility, and can be used as a hole blocking/electron transport of the OLED device Layer materials can effectively block holes or energy from the light-emitting layer to the side of the electron layer, thereby improving the recombination efficiency of holes and electrons in the light-emitting layer, and improving the luminous efficiency and service life of OLED devices. |