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Graphene and metal nanowire composite transparent and conductive plastic film, manufacturing method and application thereof

A technology of metal nanowires and graphene films, which is applied in cable/conductor manufacturing, conductive layers on insulating carriers, circuits, etc., can solve problems such as instability, inapplicability for long-term applications, and large surface resistance, so as to resist aging impact, excellent light transmittance and electrical conductivity, good effect of anti-peeling performance

Active Publication Date: 2016-10-05
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Graphene and metal nanowire composite transparent and conductive plastic film, manufacturing method and application thereof
  • Graphene and metal nanowire composite transparent and conductive plastic film, manufacturing method and application thereof
  • Graphene and metal nanowire composite transparent and conductive plastic film, manufacturing method and application thereof

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 and conductive plastic film, a manufacturing method and an application thereof. The method comprises the following steps of 1) using a chemical vapor deposition method to deposit graphene on a copper substrate so as to acquire a copper substrate / graphene film composite structure; 2) coating a plastic substrate surface with metal nanowires so as to acquire a metal nanowire / plastic substrate composite plastic film; 3) pasting the copper substrate / graphene film composite structure and the metal nanowire / plastic substrate composite plastic film and carrying out hot padding so as to acquire a copper substrate / graphene film / metal nanowire / plastic substrate composite structure; and 4) using an electrochemical bubbling method to remove the copper substrate so as to acquire a graphene and metal nanowire composite transparent and conductive plastic film. The film possesses high light transmission and conductivity, good environment stability, a good chemical attack resistance ability and good flexibility. The film can be used for various kinds of electronic devices, such as an electrochromic device, a touch screen and the like.

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 thin films of metal nanowires (MNWs, such as silver nanowires Ag NWs and copper nanowires Cu NWs), are expected to be an alternative to ITO due to their good light transmittance...

Claims

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Application Information

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IPC IPC(8): H01B5/14H01B13/00
Inventor 彭海琳邓兵刘忠范
Owner PEKING UNIV
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