Method for preparing graphene conductive thin film by using ink jet printing

Abstract

The invention discloses a method for preparing a graphene conductive thin film by using ink jet printing. According to the method, the patterns and components of film layers are controlled one point by one point simply and conveniently by means of the characteristic of high printing precision of the ink jet printing technology, and therefore, the precision of the patterns is high, the boundaries of the patterns are clear, the patterns are uniformly distributed, and complex techniques such as film plating and etching are not required. With the method adopted, thin films with complex patterns can be prepared on a variety of kinds of flexible substrates. The method has the advantages of short cycle, low cost and simple process.

Description

technical field [0001] The invention mainly relates to the field of inkjet printing, in particular to a method for preparing a graphene conductive film by inkjet printing. Background technique [0002] Inkjet printing technology has been applied for many years. As one of the main methods of flat printing, it is an indispensable part of daily office. Inkjet printing technology can directly deposit materials on the substrate, and through computer-aided design, it can be convenient Realize the production of patterning. At present, the production of electronic devices by inkjet printing is also a very novel subject. Inkjet printing has a good application prospect in layer-by-layer assembly technology. As a manufacturing process, inkjet printing Printing technology has the following advantages: (1) It can be applied to the manufacture of both large-scale devices and micro-devices; (2) It is a computer-aided printing process and is easy to pattern. Through computer-aided design, i...

AI Technical Summary

Problems solved by technology

The preparation methods of graphene include chemical vapor deposition method, redox method, liquid phase exfoliation method, etc., and inkjet printing method has been reported to use reduced graphene oxide for organic thin film transistor electrodes, temperature and chemical sensors, etc., but due to The reduction of graphene oxide cannot completely restore the electronic structure of graphene, and the electrical conductivity drops significantly. However, the liquid phase exfoliation method has the advantages of low raw material cost, macro preparation, low energy consumption, high purity, and low defect. The prepared graphene It has obvious advantages in the application of electronic devices