Extremely long Ag nanowires synthesis and electromechanical characterization for transparent, flexible, stretchable electrode

IF 3.5 3区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Hyojin An, Nam Woon Kim, Kungshik Kim, Byeong-Kwon Ju, Shin Hur
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Abstract

The performance of Ag nanowire (NW) electrodes can be improved by reducing contact junction resistance between NWs during the post-treatment. Thin and long Ag NWs simplify this process by reducing the number of contact junctions, thereby enhancing performance. Through the polyol method with slow-dropwise addition of AgNO3, we synthesized Ag NWs with an average length of 480 µm, an average diameter of 150 nm, and an aspect ratio of 3,200. Using these long Ag NWs (L-Ag NWs), we fabricated a flexible transparent electrode with high transmittance (92.16%) and low sheet resistance (20 ohms/sq). After 100,000 bending tests, the resistance change was extremely stable (< 0.002). A stretchable transparent electrode was fabricated and subjected to a 1,600-cycle stretching test at 20% strain. The L-Ag NW electrode exhibited better optoelectrical properties than the short-Ag NW (S–Ag NW). The development of L-Ag NWs has the potential to revolutionize the fabrication of wearable sensors and transparent electrode materials.

Graphical Abstract

透明、柔性、可拉伸电极的超长银纳米线合成及机电特性研究
通过后处理降低银纳米线(NW)电极之间的接触结电阻,可以提高银纳米线电极的性能。薄而长的银纳米板通过减少接触结的数量来简化这一过程,从而提高了性能。通过多元醇法缓慢滴加AgNO3,我们合成了平均长度为480µm,平均直径为150 nm,长径比为3200的Ag NWs。利用这些长Ag NWs (L-Ag NWs),我们制备了具有高透射率(92.16%)和低片电阻(20欧姆/平方)的柔性透明电极。经过10万次弯曲试验,电阻变化极为稳定(< 0.002)。制备了一种可拉伸透明电极,并在20%应变下进行了1600次循环拉伸试验。L-Ag NW电极的光电性能优于短ag NW (S-Ag NW)。L-Ag NWs的发展有可能彻底改变可穿戴传感器和透明电极材料的制造。图形抽象
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来源期刊
Journal of Materials Science
Journal of Materials Science 工程技术-材料科学:综合
CiteScore
7.90
自引率
4.40%
发文量
1297
审稿时长
2.4 months
期刊介绍: The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.
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