Nondestructive transferring method of graphene film

Abstract

The invention belongs to the technical field of materials science, and relates to an environment-friendly, efficient and convenient nondestructive transferring method of a graphene film. The nondestructive transferring method comprises the following steps: a metal foil on which the graphene film grows is put on a glass slide flatwise, and an adhesive tape is affixed to the graphene film; the metal foil of which the surface is attached with the adhesive tape is put into a corrosion solution, is corroded for 2-10 hours, and is removed to obtain an adhesive tape/graphene film structure; the adhesive tape/graphene film structure is picked up, is affixed to a target substrate after hydrophilic treatment by using a 10-50W plasma cleaning machine, and is naturally placed at room temperature for 3-6 hours to obtain an adhesive tape/graphene film/target substrate structure; finally, the adhesive tape on the surface of the adhesive tape/graphene film/target substrate structure is slowly torn in the parallel direction to realize the nondestructive transferring. The nondestructive transferring method is novel in design, scientific in principle, simple in process, easy to operate, and relatively good in transferring effect.

Description

Technical field: [0001] The invention belongs to the technical field of material science and relates to an environmentally friendly, efficient and convenient non-destructive transfer method for graphene films, which can transfer graphene prepared by chemical vapor deposition with high quality. Background technique: [0002] Graphene is a two-dimensional carbon material, which is a general term for single-layer graphene, double-layer graphene and few-layer graphene. Graphene has always been considered as a hypothetical structure and cannot exist stably alone. Until 2004, physicists Andre Geim and Konstantin Novoselov of the University of Manchester in the United Kingdom succeeded in experimenting from graphite Graphene, a honeycomb-like two-dimensional structure composed of a single layer of carbon atoms, was isolated in the study and proved that it can exist alone. Graphene is currently known as the thinnest and hardest nanomaterial in the world, it is almost completely tra...

AI Technical Summary

Problems solved by technology

[0003] In practice, since the chemical vapor deposition method can prepare large-area, continuous, transparent, and high-conductivity few-layer graphene films, it has become a more effective method for preparing graphene, but the graphene prepared by this method usually adheres to On the surface of metal foil, how to transfer the graphene film to a suitable substrate in a non-destructive, efficient, simple and environmentally friendly manner has become an urgent problem to be solved, and it has also become the key to realizing the industrialization of graphene film.

Currently commonly used transfer methods usually require colloid and sol treatment, but these methods have many colloid residues, complicated processes, large use of organic solvents, heating, and unstable processes; for example, a graphene or oxidized The graphene transfer method, which processes the target substrate and then uses an extruder to extrude the graphene or graphene oxide film on the flexible substrate and the target substrate together so that the film and the target substrate are in full contact, and then The flexible substrate is slowly peeled off, that is, the film is transferred from the flexible substrate to the target substrate; Chinese patent 201310143181.9 discloses a graphene film transfer method, which prepares graphene with defects on the surface of the metal film, and then Put the metal film structure with graphene in an acidic solution to separate the graphene on the upper and lower surfaces of the metal film from the metal film at the same time, then pick up the graphene from the solution and place it in deionized water, wash it and dry it directly Dry and transfer to various substrates; Chinese patent 201410111360.9 discloses a transfer method of a graphene film, which firstly deposits a metal substrate with a graphene film by chemical vapor deposition and a process transfer base with a thermal release adhesive The materials are flatly bonded together, the metal substrate is etched away, and the process transfer substrate / heat release adhesive / graphene film semi-finished product is obtained, and then the semi-finished graphene film surface is bonded to the target substrate and then subjected to high temperature and high pressure treatment. Make the two fit evenly and make the heat-peeling adhesive lose its viscosity, tear off the transfer substrate in the process, and obtain the target substrate / graphene film product; the above-mentioned methods are all cumbersome in procedure, high in condition requirements, and difficult to operate and realize. Therefore, the present invention has developed a simple, easy-to-operate non-destructive transfer method for graphene films, which can easily, easily and non-destructively realize the transfer of graphene films, and has good application value

Images