| abstract |
The invention discloses a quantum dot-ligand complex, a preparation method thereof, and a QLED device. The quantum dot-ligand complex includes quantum dots, and mercapto multi-chain complexes that form surface coordination with the quantum dots. body. In the present invention, by performing ligand exchange on the quantum dot system or the solution system, the surface of the quantum dot has a thiol multi-chain ligand, which effectively passivates the surface defects of the quantum dot, enhances the luminous efficiency of the quantum dot, and improves the luminous efficiency of the quantum dot in an organic solvent. Solubility, taking into account the stability of quantum dots and the carrier transport performance in the device. |