Preparation method of PEDOT: PSS composite copper grid flexible transparent conductive film

By using the PEDOT:PSS composite copper grid preparation method in the flexible transparent conductive film, the scarcity and fragility of the traditional ITO transparent conductive film is solved, and a high-performance and low-cost flexible transparent conductive film is achieved.

CN119694663AActive Publication Date: 2025-03-25HARBIN INST OF TECH AT WEIHAI
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Patent Information

Application Number
CN202411856994.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-17
Publication Date
2025-03-25
Estimated Expiration
2044-12-17

AI Technical Summary

Technical Problem

Due to the scarcity and fragility of indium elements, the traditional ITO transparent conductive film has high preparation cost and is prone to cracks, resulting in a decrease in conductivity, making it difficult to meet the needs of the future market.

Method used

A high-performance transparent conductive film with PEDOT:PSS composite copper mesh is prepared by using PEDOT:PSS as the seed layer and conductive layer, combined with the copper mesh, and spin coating and magnetron sputtering technology are used to prepare high-performance transparent conductive films.

Benefits of technology

It achieves efficient conductivity and good flexibility, reduces preparation costs, simplifies the process flow, improves the smoothness and adhesion of the film, and avoids cracks and peeling problems.

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Abstract

The invention discloses a preparation method of a PEDOT: PSS composite copper grid flexible transparent conductive film. The preparation method comprises the following steps: S1, cleaning a PET substrate; s2, a PEDOT: PSS solution is adjusted; s3, PEDOT: PSS is subjected to spin coating; s4, annealing: taking out the spin-coated PEDOT: PSS seed layer, and placing the spin-coated PEDOT: PSS seed layer in a vacuum drying oven for annealing to obtain a PEDOT: PSS film; s5, pre-sputtering of a target material; s6, a Cu film is sputtered on the PEDOT: PSS / PET substrate; and S7, preparing the copper grid composite conductive film. PEDOT: PSS / PET is adopted to replace PET to serve as the substrate, PEDOT: PSS serves as the seed layer, a good wetting effect can be provided for growth of the Cu layer, on the other hand, the Cu layer and the PEDOT: PSS layer can be compounded to give play to more excellent photoelectric performance by means of the conductivity of the PEDOT: PSS, the whole process is simple, complex operation is not needed, the laser direct writing speed is high, the pattern flexibility is high, and the method is suitable for large-scale production. And pattern parameters can be adjusted at will without being limited by masks, so that the preparation cost is relatively low.
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