▎ 摘　　要

NOVELTY - The method involves mixing (S10) the pyrrole with the cationic surfactant to obtain a first mixed solution. The basic compound is dispersed (S20) in an organic alcohol solvent to obtain lye. The lye solution is added (S30) to the zinc salt solution and mixed. The first mixed solution is added (S40) to mix, and finally an oxidant is added to mix, and the composite material is prepared by reaction. USE - Method for preparing composite material of quantum dot light emitting diode (all claimed). ADVANTAGE - The composite material provides quantum dot light emitting diode with high efficiency, high color purity and luminous intensity, and excellent performance. The coating of polypyrrole can effectively increase the interval of zinc oxide nano particles, and passivate the surface of the particles, reduce the generation of oxygen vacancy, and reduce the surface energy of the nano particles to protect the particles without agglomeration. The surface of pyrrole is provided with N,C atoms to effectively provide electronic transmission path, thus improving the electronic transmission capability. The polypolymer can effectively isolate the erosion of the water oxygen to the particles compared with the common ligand, and the compactness of the polypolymers is higher. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a composite material; and (2) a quantum dot light emitting diode. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart illustrating the method for preparing composite material. (Drawing includes non-English language text) Step for mixing the pyrrole with the cationic surfactant to obtain a first mixed solution (S10) Step for dispersing basic compound in an organic alcohol solvent to obtain lye (S20) Step for adding lye solution to the zinc salt solution (S30) Step for adding first mixed solution (S40)