▎ 摘　　要

NOVELTY - Single-molecule field effect transistor based on a two-dimensional van der waals heterostructure includes a conductive two-dimensional material gate electrode layer (6), an insulating two-dimensional material dielectric layer (3), a graphene dot electrode-based monomolecular heterojunction (2) and a protective layer (4). USE - Single-molecule field effect transistor based on two-dimensional van-type hetero-structure. ADVANTAGE - The stability of the device is improved. The interference of the external environment to the device is greatly reduced. The precise control preparation of the single-molecule field effect crystal device is realized. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a single-molecule field effect transistor based on a two-dimensional van der waals heterostructure, which involves adopting van der waals assembly process, in which contacting the material by van der waals force, including performing two-dimensional laminated assembly, where two-dimensional material as each component of the device has atomic level controllable flatness and thickness, stability of van der waals heterostructure, and combination with graphene-based single-molecule. DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view of three-dimensional structure of a single-molecule field effect transistor based on a two-dimensional van der Waals heterostructure. Graphene electrode (1) Graphene dot electrode-based monomolecular heterojunction (2) Insulating two-dimensional material dielectric layer (3) Protective layer (4) Conductive two-dimensional material gate electrode layer (6)