Quantum dot-MOF composite color filter film and preparation method thereof

The invention discloses a preparation method of a quantum dot-MOF composite color filter film. The preparation method comprises the following steps: synthesizing quantum dots; quantum dot surface modification; synthesizing a nano MOF (Metal Organic Framework); compounding the modified quantum dots and MOF to form a solution containing a quantum dot-MOF composite material; adding a solution containing the quantum dot-MOF composite material on the substrate; performing optical/thermal curing on the solution containing the quantum dot-MOF composite material on the substrate to form a prefabricated film; and performing optical/thermal treatment on the prefabricated film to form the color filter film. Effective transfer of excitation energy from the MOF to the quantum dots is realized, and the fluorescence efficiency of the quantum dots is remarkably improved; holes of the MOF material increase steric hindrance among the quantum dots, so that the possibility of quantum dot agglomeration and ion exchange is avoided