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Graphene transparent conductive electrode and preparation method and device thereof

A technology for transparent conductive electrodes and preparation devices, which is applied in the field of solar cells and can solve problems such as poor light transmission and conductivity

Pending Publication Date: 2020-10-23
紫石能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a graphene transparent conductive electrode and its preparation method and device, to solve the problem of poor light transmittance and conductivity of the graphene transparent conductive electrode prepared in the prior art

Method used

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  • Graphene transparent conductive electrode and preparation method and device thereof

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preparation example Construction

[0023] In order to solve the above problems, the invention provides a method for preparing a graphene transparent conductive electrode, which includes the following steps: S1, using CVD to deposit a graphene film on the surface of a metal foil to form a preliminary film; S2, using a hot roller to roll The transparent flexible substrate is attached to the surface of the graphene film in the preparation film to form an intermediate film; S3, the intermediate film is transported to the alcohol / water mixed solution by the feeding roller, and then the graphene film in the intermediate film is separated by the separation roller. The combination with the transparent flexible substrate is peeled off from the surface of the metal foil to obtain the combination; S4, drying the combination to obtain the graphene transparent conductive electrode.

[0024] The preparation method of the graphene transparent conductive electrode provided by the present invention first adopts the CVD method to...

Embodiment 1

[0044] use figure 1 The device in prepares graphene transparent conductive electrode, specifically as follows:

[0045] (1) Graphene film was prepared by CVD method. Put the quartz tank with Cu foil in the reactor, feed hydrogen gas at 10Pa, heat to 1000°C, keep it for 40 minutes, then let methane gas at 100Pa, keep it for 30 minutes, and then at a speed of 80°C / min Cool down to room temperature, turn off the hydrogen and methane gas, and obtain a graphene film on the Cu foil.

[0046] (2) Transfer graphene film to transparent insulating substrate

[0047] A. Lay the transparent flexible substrate on the surface of the graphene film prepared by the above-mentioned CVD method by hot roller pressing to form a transparent flexible substrate / graphene film / metal foil combination, which passes through the feeding ravioli, separation ravioli, and separation rolls, and respectively wind the copper foil and the graphene / PET film on the surface of the first receiving roller and the s...

Embodiment 2

[0056] The difference with the embodiment is that step (2) is different, specifically as follows:

[0057] A. Lay the transparent flexible substrate on the surface of the graphene film prepared by the above-mentioned CVD method by hot roller pressing to form a transparent flexible substrate / graphene film / metal foil combination, which passes through the feeding ravioli, separation ravioli, and separation rolls, and respectively wind the copper foil and the graphene / PET film on the surface of the first receiving roller and the second receiving roller. The above-mentioned transparent and flexible substrate is a plasma surface-treated polyethylene terephthalate (PET) film, and the plasma surface treatment is used to enhance the interaction between graphene and PET. The specific treatment process is as follows: the PET film is cleaned with ethanol and deionized water in order to remove surface impurities, and dried at 50°C; the dried PET film is subjected to plasma treatment, and t...

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Abstract

The invention provides a graphene transparent conductive electrode and a preparation method and device thereof. The preparation method comprises the following steps: S1, depositing a graphene film onthe surface of a metal foil by adopting a CVD method to form a preparation film; S2, attaching a transparent flexible substrate to the surface of the graphene film in the preparation film in a hot roller rolling mode, and forming an intermediate film; S3, conveying the intermediate film into an alcohol / water mixed solution by adopting a feeding roller, and then stripping a combined body of the graphene film and the transparent flexible substrate in the intermediate film from the surface of the metal foil by utilizing a separation roller to obtain a combined body; and S4, drying the combined body to obtain the graphene transparent conductive electrode. By utilizing the method provided by the invention, the high-performance graphene transparent conductive film electrode can be prepared in alarge area at low cost.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a graphene transparent conductive electrode and a preparation method and device thereof. Background technique [0002] Transparent conductive electrodes have a crucial impact on the energy conversion efficiency of thin-film solar cells. Generally, a good battery transparent anode must meet the following conditions: 1. Good electrical characteristics, high work function, and efficient hole collection; 2. Good optical characteristics, and the transparent anode should be as transparent as possible to the solar spectrum , so that more sunlight can enter the battery; 3. Good mechanical properties; 4. Simple preparation process and high yield. At present, the materials used in transparent conductive electrodes are metal oxides, such as indium tin oxide (ITO) and fluorine tin oxide (FTO), commonly known as conductive glass. Although conductive glass is widely used in the field of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/44H01L51/48C01B32/186C01B32/194
CPCC01B32/186C01B32/194H10K71/60H10K30/82Y02E10/549
Inventor 李静文刘琦
Owner 紫石能源有限公司
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