Green light thermally activated delayed fluorescence (TADF) material and application thereof

摘要

The present invention provides a green light thermal activation delayed fluorescent material, a synthesizing method thereof, and an electroluminescent device. The green light thermal activation delayed fluorescent material is a target compound having a molecular structure of D-A and synthesized by a reaction of an electron donor and an electron acceptor, wherein the electron acceptor being a planar electron acceptor in an ultra-low triplet energy state, and a triplet energy state of the target compound ranging from 2.0 to 3.0 eV. The method for synthesizing a green light thermal activation delayed fluorescent material includes the following steps: a reaction solution preparation step; a target compound synthesis step; an extraction step; and a target compound purification step. The electroluminescent device includes: a substrate layer; a hole transporting and injecting layer; a light emitting layer; an electron transporting layer; and a cathode layer.