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A kind of graphene and metal nanowire composite transparent conductive plastic film and its preparation method and application

A technology of metal nanowires and graphene films, which is applied in the direction of cable/conductor manufacturing, conductive layers on insulating carriers, circuits, etc., can solve problems such as unsuitable for long-term applications, large surface resistance, instability, etc., and achieve excellent transparency. Optical and electrical conductivity, resistance to aging effects, excellent flexibility

Active Publication Date: 2017-07-21
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of graphene as a transparent conductive material is that its surface resistance is large. Although its conductivity can be improved by chemical doping, it is very unstable and not suitable for long-term applications.

Method used

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  • A kind of graphene and metal nanowire composite transparent conductive plastic film and its preparation method and application
  • A kind of graphene and metal nanowire composite transparent conductive plastic film and its preparation method and application
  • A kind of graphene and metal nanowire composite transparent conductive plastic film and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Embodiment 1, preparation graphene and silver nanowire composite transparent conductive plastic film

[0075] 1) Single-layer graphene film / copper foil: use industrial electrolytic copper foil, cut the copper foil into 10cm x 5m (width x length), place it in the operating system of the continuous production system, and under the hydrogen atmosphere with a flow rate of 50sccm, Raise the temperature of the furnace body to 1000°C, the system pressure is about 50Pa, then change the hydrogen flow rate to 2sccm, feed 36sccm methane gas, keep at 1000°C, and use a stepping motor to control the running speed of the copper foil to 1r / min. The foil is attached to the wall of the quartz tube. After the operation, the hydrogen and methane are turned off to obtain a large area of ​​single-layer graphene deposited on the surface of the copper foil. After the copper foil is lowered to room temperature, the furnace is opened and the copper foil is taken out;

[0076] The typical electro...

Embodiment 2

[0108] Embodiment 2, preparation graphene and copper nanowire composite transparent conductive plastic film

[0109] 1) single-layer graphene film / copper foil: step is with embodiment 1 step 1);

[0110] 2) Preparation of PET / EVA / Cu NWs composite plastic film: use commercial thermal lamination film PET / EVA, clean the PET / EVA film with isopropanol, dry it, and then treat it with 90W air plasma for 2min to improve the EVA surface hydrophilicity;

[0111] Disperse metallic copper nanowires in ethanol to a concentration of 10 mg / mL. Before use, dilute the Cu NWs suspension to 1 mg / mL with ethanol, and ultrasonically disperse in an ultrasonic cleaner with a power of 99W for 1 min to obtain a dispersed Uniform suspension of metallic copper nanowires;

[0112] Forming the metal copper nanowire layer on the PET / EVA film can adopt the following process 1 or process 2:

[0113] Process 1: Spin-coating process of the homogenizer, adjust the concentration of copper nanowires of differe...

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Abstract

The invention discloses a graphene and metal nanowire composite transparent conductive plastic film and its preparation method and application, comprising the following steps: 1) depositing graphene on a copper substrate by chemical vapor deposition to obtain a copper substrate / graphene film Composite structure; 2) coating metal nanowires on the surface of a plastic substrate to obtain a metal nanowire / plastic substrate composite plastic film; 3) combining the copper substrate / graphene film composite structure with the metal nanowire / Plastic substrate composite plastic film lamination, heat embossing, obtain copper substrate / graphene film / metal nanowire / plastic substrate composite structure; 4) adopt electrochemical bubbling method to remove copper substrate, promptly obtain described graphene and Metal nanowire composite transparent conductive plastic film. It has high light transmission and conductivity, excellent environmental stability, chemical corrosion resistance and good flexibility, and can be used in various electronic devices, such as: electrochromic devices and touch screens.

Description

technical field [0001] The invention belongs to the field of composite films of graphene and nanomaterials, and in particular relates to a composite transparent conductive plastic film of graphene and metal nanowires and a preparation method and application thereof. Background technique [0002] Transparent conductive films are important components of various optoelectronic devices such as touch screens, organic solar cells, and organic light-emitting diodes. Indium tin oxide (ITO) has good light transmission and conductivity, and is the most widely used transparent conductive film material in industry. However, some defects of ITO, such as its own brittleness, low abundance of metal indium, low infrared transmittance, and expensive preparation process, limit the wider application of ITO. Conductive films of metal nanowires (MNWs, such as silver nanowires AgNWs and copper nanowires Cu NWs), are expected to be an alternative to ITO due to their good light transmittance and e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B5/14H01B13/00
Inventor 彭海琳邓兵刘忠范
Owner PEKING UNIV
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