Preparation method for graphene material and preparation method for component

Abstract

The invention belongs to the technical field of materials and discloses a preparation method for a graphene material. The method comprises the following steps: placing a carbon-containing compound material into a high-vacuum environment, and then adopting two beams of laser lights in different wavelengths for irradiating a same area of the carbon-containing compound material. The preparation and transferring processes of the method provided by the invention are simple; compared with common methods for preparing graphene (such as, a mechanical stripping method, an ultrasonic liquid-phase stripping method and an electrochemical stripping method), the method provided by the invention has the advantages that the transferring process after the graphene growth can be avoided and the damage to the graphene in the transferring process can be avoided; the method can be used for directly preparing a graphene device; the photolithography technique required by the preparation of the graphene device can be simplified, so that the cost can be lowered.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a method for preparing a graphene material and a method for preparing a device. Background technique [0002] Graphene is a material in which carbon atoms of graphite, which is a three-dimensional structural carbon allotrope naturally occurring in nature, are arranged in a hexagonal planar structure in the form of a two-dimensional sheet. Carbon atoms of graphene form SP 2 bonds, and has the form of a planar sheet with a thickness of one atom. [0003] Graphene has remarkably excellent electrical and thermal conductivity, and physical properties (such as excellent mechanical strength, softness, elasticity, quantized transparency depending on thickness, high specific surface area, etc.) specific bonding structure to explain. Three of the four peripheral electrons of the carbon that make up graphene form sp 2 The hybrid orbital thus has a σ bond, while the remaining one elect...

AI Technical Summary

Problems solved by technology

But in this method, need to use reducing agent (such as hydrazine etc.) to be used for the deoxygenation reaction of graphene oxide, wherein the great majority of these reducing agents are dangerous because of highly corrosive, explosive, human body toxicity etc., and the prepared The graphene may include impurities, etc., so that the electrical conductivity may decrease