Method for preparing graphene and fluorine co-doped tin oxide transparent conductive film

Abstract

The invention relates to a method for preparing a graphene and fluorine co-doped tin oxide transparent conductive film. The method is characterized in that the chemical composition of the graphene andfluorine co-doped tin oxide transparent conductive film is SnO2-x+zFxCy, wherein x=0.1 to 0.5, y=0.2 to 1, z=0.05y to 0.1y, the preparation process includes in-situ reduction of graphene oxide, hybrid sol formulation, hybrid film formation and hybrid film postprocessing, and transparent conductive film glass has the film thickness of 500 to 1200 nm, the visible light transmittance of 82% to 88% and the square resistance of 5 to 20 Omega / square. According to the method, the electrical conductivity, stability, toughness and hydrophobicity of the tin oxide transparent conductive film are improved. The transparent conductive film prepared by using a sol-gel method has the advantages of simple process and equipment, safety and environmental protection, and easy realization of industrialization.

Description

technical field [0001] The invention relates to a preparation method of a graphene and fluorine co-doped tin oxide transparent conductive film, especially the conductivity, stability, toughness and hydrophobicity of the tin oxide transparent conductive film are improved through nano-graphene and fluorine co-doping, It belongs to the fields of new materials, energy saving and environmental protection. technical background [0002] Transparent conductive film (TCF) is an optoelectronic material with optical transparency and conductivity. Supporting it on glass or transparent resin can be used as transparent electrodes for thin-film solar cells, electrodes for liquid crystal displays, electrodes for gas sensors, and anti-fog electrodes for car windows. and photocatalytic materials. [0003] The commercialized fluorine-doped tin oxide conductive film (FTO) has a light transmittance of more than 80% and good conductivity, but the light transmittance and conductivity are negative...

AI Technical Summary

Problems solved by technology

Chinese patent CN106517812A (2017-03-22) discloses a method of preparing graphene and carbon nanotubes doped FTO conductive film by spray pyrolysis, and the three-dimensional composite of graphene and carbon nanotubes can bridge the gap between FTO grains The pores between them can increase the migration rate of electrons and enhance the electrical conductivity, but the spray pyrolysis method is more complicated, and the process and equipment control are more difficult

[0006] Due to the anisotropy of graphene, the resistivity of graphene sheets in the normal direction is high, and the existing graphene doping technology has not achieved the effect of greatly improving the conductivity of FTO conductive films, but graphene doping is expected to be Improve the conductivity, stability, toughness and hydrophobicity of FTO conductive film while maintaining good light transmission