Improvement of Conductivity and Adhesion of AgNW Flexible Transparent Conductive Coatings by the Capillary Forces Effect and Polyvinyl Alcohol

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Advanced Electronic Materials Pub Date : 2024-06-28 DOI:10.1002/aelm.202300876

Marat Kaikanov, Alshyn Abduvalov

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Abstract

Silver nanowires (AgNW) are prospective for the fabrication of flexible transparent conductive coatings. The main challenge is to ensure low sheet resistance of AgNW coatings at flexible substrates. Herein, a simple low-temperature post-treatment method is proposed for improving the conductivity and adhesion of AgNW coatings which is based on the deposition of distilled water (DI) with a small amount of dissolved polyvinyl alcohol (PVA). Capillary forces cause a decrease in the sheet resistance of AgNW coatings while the presence of PVA significantly improves the adhesion of nanowires to the flexible polyethylene terephthalate (PET) substrates. As a result, coatings with a transparency of 91% and a sheet resistance of 20 Ω sq^‒1 are fabricated. The storage time of coatings in air is increased due to the presence of a thin layer of PVA on AgNW. After 90 days, the sheet resistance of post-treated AgNW coatings is increased by 11 times, while the sheet resistance of untreated coatings is increased by more than 3000 times. The obtained AgNW coatings are utilized as flexible transparent heaters.

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利用毛细力效应和聚乙烯醇提高 AgNW 柔性透明导电涂层的导电性和附着力

银纳米线（AgNW）有望用于制造柔性透明导电涂层。主要的挑战在于如何确保 AgNW 涂层在柔性基底上具有较低的薄层电阻。本文提出了一种简单的低温后处理方法来提高 AgNW 涂层的导电性和附着力，该方法基于蒸馏水（DI）与少量溶解的聚乙烯醇（PVA）的沉积。毛细管力会降低银纳米线涂层的薄层电阻，而 PVA 的存在则会显著提高纳米线与柔性聚对苯二甲酸乙二醇酯（PET）基底的附着力。因此，涂层的透明度达到 91%，薄层电阻为 20 Ω sq-1。由于 AgNW 上有一薄层 PVA，涂层在空气中的储存时间延长了。90 天后，经过后处理的 AgNW 涂层的薄层电阻增加了 11 倍，而未经处理的涂层的薄层电阻增加了 3000 多倍。获得的 AgNW 涂层可用作柔性透明加热器。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advanced Electronic Materials NANOSCIENCE & NANOTECHNOLOGYMATERIALS SCIE-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

11.00

自引率

3.20%

发文量

433

期刊介绍： Advanced Electronic Materials is an interdisciplinary forum for peer-reviewed, high-quality, high-impact research in the fields of materials science, physics, and engineering of electronic and magnetic materials. It includes research on physics and physical properties of electronic and magnetic materials, spintronics, electronics, device physics and engineering, micro- and nano-electromechanical systems, and organic electronics, in addition to fundamental research.