Organic compound and application thereof

Abstract

Provided are an organic compound and an application thereof. The organic compound has a structure as shown in Formula I. The overlap degree between HOMO and LUMO is effectively reduced through structural framework design and specific group introduction, thus the energy level difference between the triplet state and the singlet state is reduced to below 300 meV, the reverse crossing of the energy from the triplet to the singlet is satisfied. The organic compound obtains a relatively balanced radiative transition rate and good TADF characteristics, and has excellent carrier transport performance, balance and stability of electron mobility and hole mobility, low preparation cost, and environmental friendliness. The organic compound can be used as a light-emitting layer material of an OLED device, and the material has a TADF light-emitting mechanism and high light-emitting quantum efficiency, which can reduce the drive voltage and energy consumption, and improve luminous efficiency and working life.