| abstract |
A compound containing a benzoheterocyclic structure, an electroluminescent device and a display device, the general structural formula of the compound containing a benzoheterocyclic structure is formula I; wherein, the meanings of each group and substituent are the same as those in the description same. The compound containing a benzoheterocyclic structure provided by the embodiment of the present disclosure has a relatively high refractive index, and can be used as a light extraction material to improve the luminous efficiency of the device; The absorption of ultraviolet light is strong, but it does not absorb the light of the device itself. When used as a light extraction material, it can effectively protect the device from damage to the internal device caused by ultraviolet light; The thermal stability is good, and the vapor deposition process is used to form the light extraction layer with good stability, which can avoid the problem of shortening the life of the device due to the instability of the material and the generation of impurities in the vapor deposition. |