▎ 摘　　要

NOVELTY - Forming graphene material on surface involves depositing metal material layer on material substrate; forming a desired concentration of carbon in the metal material layer to form carbon-containing metal material; applying heating/cooling cycle to the carbon-containing metal material layer; cooling the annealed carbon-containing metal material layer to precipitate graphene material; removing graphene material from top surface of the metal material layer; and removing the metal material layer without removing the graphene material. USE - For forming graphene material on a surface (claimed) used, as gate materials in a transistor or vertical conducting channels in a vertical transistor. ADVANTAGE - The method forms graphene directly on a surface without having to use the conventional approach of forming a graphene material layer on a second substrate and then transferring the graphene from the second substrate to a first substrate. DETAILED DESCRIPTION - Forming graphene material on a surface, involves forming a material substrate; depositing a metal material layer on the material substrate, the metal material layer having a bottom surface in contact with the material substrate and further having top surface not in contact with the material substrate; forming a desired concentration of carbon in the metal material layer to form a carbon-containing metal material; applying a heating/cooling cycle to the carbon-containing metal material layer to diffuse the carbon within the metal material; cooling the annealed carbon-containing metal material layer to precipitate a first graphene material (GM) onto the bottom surface of the metal material and further to precipitate a second graphene material (GM2) onto the top surface of the metal material; removing GM2 from the top surface of the metal material layer; and removing the metal material layer without removing the GM; where the GM remains on the surface of the material substrate. DESCRIPTION OF DRAWING(S) - The figure shows method for forming a vertical graphene material structure.