▎ 摘　　要

NOVELTY - Preparing quantum dots, comprises using two-dimensional materials to prepare two-dimensional material substrates, placing the two-dimensional material substrate in a growth chamber, and increasing the temperature of the growth chamber at a first preset temperature, spraying raw material on the surface of the two-dimensional material substrate with a preset density beam through a molecular beam epitaxy beam source furnace, and subjecting the raw material into kinetic reaction process of adsorption, desorption, migration, nucleation and growth on the surface of the two-dimensional material substrate in a Van der Waals epitaxy mode to growing quantum dots. USE - The method is useful in preparing quantum dots. ADVANTAGE - The method: utilizes two-dimensional material as a substrate, which does not require specific lattice matching conditions; and can achieve the growth of quantum dots even when the lattice symmetry is different.