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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  • Abstract
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  • 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

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

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Example Embodiment

[0074] Example 1. Preparation of graphene and silver nanowire composite transparent conductive plastic film

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

[0076] The typical electron micro...

Example Embodiment

[0108] Example 2: Preparation of graphene and copper nanowire composite transparent conductive plastic film

[0109] 1) Single-layer graphene film / copper foil: the steps are the same as those in Example 1 step 1);

[0110] 2) Preparation of PET / EVA / Cu NWs composite plastic film: use commercial heat-laminated film PET / EVA, clean the PET / EVA film with isopropanol, blow dry, and then treat it with 90W air plasma for 2 minutes to improve the EVA surface Hydrophilicity;

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

[0112] The following process 1 or process 2 can be used to form the metal copper nanowire layer on the PET / EVA film:

[0113] Process 1: The spin coating process of the homogenizer is to adjust the concentration of differ...

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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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