| abstract |
The invention discloses a compound and an organic electroluminescence device, the structural formula of which is shown in the following formula 1: Wherein, m and n are the same or different, each independently is 0 or 1, and m and n are not 0 at the same time; A is a benzene ring or a naphthalene ring fused with a five-membered ring; X is O or S; R is hydrogen, Phenyl or deuterated phenyl; L1, L2 are the same or different, each independently is a single bond, phenylene or naphthylene; Ar1, Ar2 are the same or different, each independently is diarylamine, diheteroaryl amine group or aryl heteroaryl amine group, the compound of the present invention is used in organic electroluminescent devices, under the same current density, the luminous efficiency of the device is greatly improved, the start-up voltage is decreased, and the power consumption is reduced. Relatively reduced, life expectancy increased accordingly. |