Method for in-situ preparation of polymer-based micro-nano patterned light-emitting quantum dots by printing method

The invention discloses a method for in-situ preparation of macromolecule-based micro-nano patterned light-emitting quantum dots by a printing method, which comprises the following steps of: firstly, simultaneously dispersing two quantum dot precursors into a solution containing a polymer, and heating and stirring to blend the quantum dot precursors and the polymer in a molecular scale to form quantum dot precursor ink; the ink is printed on a substrate through ink-jet printing, and the size and spacing of dot matrixes or lines are controlled by controlling the ink concentration, the distance between a printing needle and the substrate, the moving speed of the substrate, the magnitude of voltage, the magnitude of air pressure and the printing speed. And after the solvent in the pattern is completely volatilized, carrying out heat treatment on the pattern. After heat treatment, the quantum dots are formed in situ in the micro-nano patterned polymer matrix. According to the method, the micro-nano patterned quan