The invention relates to a
fluorine-containing hole material of a spirobifluorene structure. The structure of the hole material is shown in the formula I. The hole material of the spirobifluorene structure is a novel
OLED material, the novel material takes spirobifluorene as a main body, and therefore the
glass transition temperature can be increased; the molecular
thermal stability is high, moderate HOMO and LUMO energy levels and higher Eg are achieved, the photoelectric performance can be effectively improved, and the service life of
OLED devices is prolonged. Arylamine groups are introduced, compared with single spirobifluorene, the better plane structure and the better
conjugated system are achieved, synthesis and purification are simple, and the cost is low;
benzene rings contain
fluorine atoms, therefore the intermolecular distance can be increased, association among compounds is avoided, and the
molecular stacking probability is reduced. In the
evaporation process, the
crystallization phenomenon cannot easily occur, the
fluorine-containing hole material can effectively increase the finished product rate of OLEDs when applied to the
OLED devices and effectively improve the luminous efficiency, and is good in film formation performance. The material can be used as a
luminescent material, and the service life of the
luminescent material can be effectively prolonged.