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Graphene composite transparent electrode and preparation method and application thereof

A technology of transparent electrodes and composite materials, applied in cable/conductor manufacturing, circuits, electrical components, etc., can solve problems affecting optoelectronic properties, multiple defects and grain boundaries, etc., to improve electrical conductivity and stability, low cost, excellent The effect of optoelectronic properties and flexibility

Active Publication Date: 2013-10-09
CHONGQING GRAPHENE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Graphene grown by CVD method can be transferred on any desired substrate. However, the large-area graphene that can be prepared at present is a polycrystalline structure with many defects and grain boundaries, which greatly affects its photoelectric performance.

Method used

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  • Graphene composite transparent electrode and preparation method and application thereof
  • Graphene composite transparent electrode and preparation method and application thereof
  • Graphene composite transparent electrode and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0046] Such as figure 1 As shown, the preparation method of the graphene composite material transparent electrode of the present embodiment comprises the following steps:

[0047] 1) Using ordinary thermocouple heating chemical vapor deposition method, using copper foil as substrate and catalyst, CH 4 Under the condition of gaseous carbon source, the growth of graphene is carried out, the growth temperature is 800°C, and the growth time is 100min;

[0048] 2) The graphene grown on the substrate was peeled off and transferred to the flexible transparent substrate of polyethylene terephthalate by using the method of thermal release tape-etching;

[0049] 3) Coating conductive polymer material polythiophene (Polythienylene, PT) on the surface of graphene by spraying method to form a conductive polymer layer and obtain a transparent electrode of graphene composite material.

[0050] The structure of the graphene composite transparent electrode prepared in this embodiment is as f...

Embodiment 2

[0054] Such as figure 1 As shown, the preparation method of the graphene composite material transparent electrode of the present embodiment comprises the following steps:

[0055] 1) Using radio frequency plasma assisted chemical vapor deposition method, on nickel foil as substrate and catalyst, C 2 h 4 Under the condition of gaseous carbon source, the growth of graphene is carried out, the growth temperature is 1000°C, and the growth time is 200min;

[0056] 2) The graphene grown on the substrate is peeled off by electrolytic bubbling stripping method, and transferred to a flexible transparent polycarbonate substrate;

[0057] 3) The conductive polymer material polypyrrole (Polypyrol, PPY) is coated on the surface of graphene by spin coating method to form a conductive polymer layer and obtain a transparent electrode of graphene composite material.

[0058] The structure of the graphene composite transparent electrode prepared in this embodiment is as follows Figure 5 As...

Embodiment 3

[0061] Such as figure 2 As shown, the preparation method of the graphene composite material transparent electrode of the present embodiment comprises the following steps:

[0062] 1) The remote plasma-assisted chemical vapor deposition method was used to grow graphene under the conditions of gold foil as the substrate and catalyst, and benzene as the liquid carbon source. The growth temperature was 500°C and the growth time was 20 minutes;

[0063] 2) The graphene grown on the substrate is peeled off by UV curing-etching method, and transferred to the flexible transparent substrate of polyethylene; then the graphene is doped, and the doping method is HNO 3 The solution is soaked as a doping reagent;

[0064] 3) The conductive polymer material polyphenylene vinylene (PPV) is coated on the surface of graphene by bar coating method to form a conductive polymer layer and obtain a transparent electrode of graphene composite material.

[0065] The structure of the graphene compos...

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Abstract

The invention discloses a graphene composite transparent electrode and a preparation method of the graphene composite transparent electrode and application of the graphene composite transparent electrode. The graphene composite transparent electrode comprises a flexible transparent base plate. A graphene layer and a conductive macromolecule layer are arranged on the flexible transparent base plate. The preparation method of the graphene composite transparent electrode can be achieved by two ways, one way includes the steps that graphene is transferred to the flexible transparent base plate, and then conductive macromolecule materials coat the surface of graphene, and the other way includes the steps that firstly the conductive macromolecule materials coat the surface of the flexible transparent base plate, and then the graphene is transferred to the conductive macromolecule layer of the flexible transparent base plate. The graphene composite transparent electrode can be applied to manufacturing touch screens, solar cells, organic light emitting diodes, liquid crystal display screens, thin film transistors, flexible electronic products or wearable electronic products. The graphene composite transparent electrode takes the performance of electrical conductivity, light transmittance and flexibility into account and has the excellent photoelectric property and flexibility.

Description

technical field [0001] The invention relates to the technical field of flexible transparent electrode materials, in particular to a graphene composite material transparent electrode and its preparation method and application. Background technique [0002] Transparent conductive film materials and devices are widely used in military, aerospace, industrial, civil and many other optoelectronic system equipment. At present, indium tin oxide (ITO) transparent electrodes are widely used because of their good optoelectronic properties, but with the modern optoelectronic With the continuous development of devices and the extensive use of transparent electrodes, more and more problems have been exposed to traditional ITO transparent electrodes, such as: (1) The chemical and thermal properties of ITO are unstable; (2) In is a rare metal and Toxic; (3) ITO film has ceramic properties. Therefore, it is urgent to find a new type of electrode with high transmittance, low resistance, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/14H01B13/00
Inventor 史浩飞黄德萍李占成刘海燕李朝龙魏大鹏杜春雷
Owner CHONGQING GRAPHENE TECH
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