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Method for improving mechanical performance of flexible device through graphene oxide self-assembled composite silver nano wire

A silver nanowire, flexible device technology, applied in electrical components, metal/alloy conductors, cable/conductor manufacturing, etc., can solve problems such as affecting the coating effect, achieve strong flexibility and mechanical stability, overall simple operation, and electrical conductivity good performance

Active Publication Date: 2018-04-13
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

However, graphene oxide is prone to large deformation under the action of ultrasound, and many tiny cracks will appear on the surface of the film, which seriously affects its coating effect.

Method used

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  • Method for improving mechanical performance of flexible device through graphene oxide self-assembled composite silver nano wire
  • Method for improving mechanical performance of flexible device through graphene oxide self-assembled composite silver nano wire
  • Method for improving mechanical performance of flexible device through graphene oxide self-assembled composite silver nano wire

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Embodiment 1

[0053] refer to figure 1 , 2 , 3, and 4: A method for improving the mechanical properties of flexible devices with graphene oxide self-assembled composite silver nanowires, the process flow comprising:

[0054] (1) Silver nanowires were prepared by the polyol reduction method, and the diameter of the prepared silver nanowires was 90 nm and the length was 50 μM;

[0055] (2) Preserve the silver nanowires (Ag NWs) after centrifugal cleaning with ethanol, the concentration is 20mg / ml;

[0056] (3) disperse the dry graphene oxide in deionized water, be mixed with aqueous solution, the volume of deionized water is 100ml;

[0057] (4) After ultrasonic dispersion for 60 minutes, centrifuge at a speed of 4000 r.p.m in a TDL-5-A centrifuge for 30 minutes to remove large precipitates;

[0058] (5) Take the supernatant and continue to centrifuge at 4000r.p.m for 30 minutes to remove small impurities;

[0059] (6) After (5) is processed, the obtained precipitate is redispersed in deio...

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Abstract

The invention provides a method for improving mechanical performance of a flexible device through a graphene oxide self-assembled composite silver nano wire, wherein the silver nano wire is prepared according to a polyol reduction method. The graphene oxide forms a film with a certain thickness through self-assembling, and then a flexible thin-film device is formed through transferring and combining with the silver nano wire. Simple operation in the whole process is realized. Uniform thickness of the graphene oxide film and remarkable integral combining effect are realized. The flexible transparent conductive film can be realized, and furthermore the method has advantages of high transparency, high conductivity and high stability. Furthermore the method has advantages of simple operation,low equipment requirement and high repeatability. The transparent conductive film prepared according to the method has advantages of high mechanical performance, high transmittance, high conductive performance, high flexibility and high wearing resistance. The transparent conductive film can be widely used in the fields such as solar cell, flexible liquid crystal display device and flexible touchscreen and satisfies a high-quality and high-precision production requirement of an enterprise.

Description

technical field [0001] The invention belongs to the technical field of transparent conductive films of self-assembled composite nanomaterials, and relates to a method for preparing a graphene oxide film by a self-assembly method and then compounding it with silver nanowires to improve the mechanical properties of flexible devices. Background technique [0002] With the development of science and technology, flexible transparent conductive films have been regarded as one of the important alternatives to traditional conductive glass indium tin oxide ITO, and have been widely used in the research of optoelectronic devices such as thin-film solar cells, flexible LCD screens, and flexible touch screens. For flexible transparent conductive films, in addition to conductivity and transmittance, their mechanical properties are also important parameters, especially flexibility and resistance to flexion become essential requirements for flexible devices. But generally speaking, there i...

Claims

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Application Information

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IPC IPC(8): H01B13/00H01B1/02
CPCH01B1/02H01B13/00
Inventor 计红军陆骅俊赵维巍李明雨
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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