| abstract |
The present invention relates to an organic host material, which has the structure shown in general formula I. The novel organic host material provided by the present invention is centered on dibenzofuran. Since dibenzofuran is a better electron transport unit, the material has both hole transport properties and electron transport properties, and can effectively transport holes in the light-emitting layer. It also has a high triplet energy level, which can effectively prevent the energy from returning to the host material during the luminescence process, thereby improving its luminous efficiency. |