Method for preparing and transferring graphene transparent film

Abstract

The invention discloses a method for preparing and transferring a graphene transparent film. The technical problem required be solved is that impurities, cracks and bumps after the graphene transparent film is transferred are required to be reduced. The preparing and transferring method disclosed by the invention comprises the steps of: carrying out chemical vapor deposition on the graphene film on a metal substrate, coating methyl methacrylate or photoresist to form a support layer; electrolyzing the graphene film and separating the metal substrate; and coating the methyl methacrylate or photoresist on the support layer, putting the support layer into acetone solution, and attaching the graphene film to an appointed substrate. Compared with the prior art, the film composed of the graphene film and the support layer is separated from the metal substrate by an electrochemical foaming method; the graphene film is transferred to an appointed substrate and then the graphene film well contacts the plane of the appointed substrate without the cracks by spin coating for second time; the metal substrate can be repeatedly used, and the cost of preparation of the graphene transparent film is reduced; the transferred graphene film is well contacted with the substrate, and the impurities are relatively few.

Description

technical field

[0001] The invention relates to a method for preparing and transferring a transparent conductive film, in particular to a method for preparing and transferring a transparent conductive film based on graphene. technical background

[0002] The mature process of making transparent conductive film in the prior art is obtained by physical vapor deposition using indium tin oxide ITO as the material. However, the content of indium on the earth is very small and extraction is difficult, and the annual output is less than 500 tons; and ITO is not resistant to acid Alkali, easy to fail in acid-base environment. Since its discovery in 2004, graphene has attracted widespread attention due to its advantages of the fastest electron migration, high hardness, and fast heat transfer. After the graphene film is prepared by the CVD method, the method for transferring the graphene film in the prior art is to spin-coat an organic colloid or a high molecular polymer on the graph...