| abstract |
The invention discloses an organic light-emitting material with high exciton utilization rate and a preparation method and application thereof. The material has an enol resonance structure, and its structure is shown in the following formula (I) or (II): The organic light-emitting material contains a strong electron-deficient unit squaraine, has a large degree of structural conjugation, strong rigidity, and has the characteristics of localized hybrid charge transfer state luminescence, and can effectively utilize triplet excitons through anti-gap jumping to improve. The utilization rate of excitons can improve the electroluminescence performance of the device; it has a large molecular weight and good solubility, and can use solution processing technology to prepare large-area flexible display devices, which has huge development potential and prospects in the field of organic electronic display. . |