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Scalable Fabrication of Metallic Nanofiber Network via Templated Electrodeposition for Flexible Electronics

机译：柔性电子模板电子沉积技术可扩展地制造金属纳米纤维网络

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摘要

Metallic nanofiber networks (MNFNs) are very promising for next-generation flexible transparent electrodes (TEs) since they can retain outstanding optical and electrical properties during bending due to their ultralong and submicron profile. However, it is still challenging to achieve cost-effective and high-throughput fabrication of MNFNs with reliable and consistent performance. Here, a cost-effective method is reported to fabricate high-performance MNFN-TEs via templated electrodeposition and imprint transfer. The fabricated electrodeposition template has a trilayer structure of glass/indium tin oxide/SiO2 with nanotrenches in the insulating SiO2 that can be utilized for repeated electrodeposition of the MNFNs, which are then transferred to flexible substrates. The fabricated TEs exhibit excellent optical transmittance (84%) and electrical conductivity (0.9 omega sq(-1)) and show desirable mechanical flexibility with a sheet resistance 2 omega sq(-1) under a bending radius of 3 mm. Meanwhile, the MNFN-TEs reproduced from the reusable template show consistent and reliable performance. Additionally, this template-based method can realize the direct patterning of MNFN-TEs with arbitrary conductive patterns by selective masking of the template. As a demonstration, a flexible dynamic electroluminescent display is fabricated using TEs made by this method, and the light-emitting pattern is observable from both sides.
机译：金属纳米纤维网络（MNFN）对于下一代柔性透明电极（TE）非常有前途，因为它们具有超长和亚微米的外形，因此在弯曲过程中可以保持出色的光学和电学性能。然而，实现具有可靠且一致的性能的低成本，高吞吐量的MNFN制造仍然具有挑战性。在这里，据报道，一种经济有效的方法是通过模板电沉积和压印转移来制造高性能MNFN-TE。制成的电沉积模板具有玻璃/氧化铟锡/ SiO2的三层结构，绝缘SiO2中具有纳米沟槽，可用于重复电沉积MNFN，然后将其转移到柔性基板上。制成的TE表现出出色的光学透射率（> 84％）和电导率（<0.9 omega sq（-1）），并且在3 mm的弯曲半径下显示出理想的机械柔韧性，薄层电阻小于2 omega sq（-1）。同时，从可重用模板复制的MNFN-TE显示出一致且可靠的性能。另外，这种基于模板的方法可以通过模板的选择性掩膜来实现具有任意导电图案的MNFN-TE的直接图案化。作为演示，使用通过该方法制造的TE制造柔性动态电致发光显示器，并且可以从两侧观察发光图案。

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  • 来源
    《Advanced Functional Materials》 |2019年第35期|1903123.1-1903123.10|共10页
  • 作者

    Zhang Cuiping; Cai Jingxuan; Liang Chuwei; Khan Arshad; Li Wen-Di;

  • 作者单位

    Univ Hong Kong, Dept Mech Engn, Pokfulam, Hong Kong, Peoples R China|HKU Zhejiang Inst Res & Innovat HKU ZIRI, Hangzhou 311300, Zhejiang, Peoples R China;

    Univ Hong Kong, Dept Mech Engn, Pokfulam, Hong Kong, Peoples R China|HKU Zhejiang Inst Res & Innovat HKU ZIRI, Hangzhou 311300, Zhejiang, Peoples R China;

    Univ Hong Kong, Dept Mech Engn, Pokfulam, Hong Kong, Peoples R China;

    Univ Hong Kong, Dept Mech Engn, Pokfulam, Hong Kong, Peoples R China|HKU Zhejiang Inst Res & Innovat HKU ZIRI, Hangzhou 311300, Zhejiang, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    flexible transparent electrode; metallic nanofiber; scalable fabrication; templated electrodeposition;

    机译：柔性透明电极;金属纳米纤维;可伸缩制造;模板电沉积;

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