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Large-scale synthesis of AgNWs with ultra-high aspect ratio above 4000 and their application in conductive thin film

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Abstract

Large-scale, uniform silver nanowires (AgNWs) with diameter of 30 nm and ultra-high aspect ratio up to 4000 were obtained by adding Cu2+ and Fe3+ to the AgNWs synthesis. AgNWs were longer at higher concentration of Cu2+ and better uniformity in the presence of both Fe3+ and Cu2+. Finding indicate that by simply controlling Cu2+/Fe3+ molar ratios in the reaction process, the high yield (98%), ultra-high aspect ratio (over 4000) and large-scale (over 50 g per pot) production of AgNWs can be obtained. Additionally, embedding the ultra-high aspect ratio AgNWs into polyvinyl alcohol (PVA) matrices, novel AgNWs@PVA flexible transparent conductor films (TCFs) with high-electrical conductivity performance was fabricated. This method improved the production efficiency of ultra-high aspect ratio AgNWs and could be applied to high performance TCFs; thus having major commercial implications.

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Acknowledgements

This work is supported by the National Natural Science Foundation of China (Grant No. 61540074), the Basic Applied Research Foundation of Yunnan Province, China (Grant No. 2016FD126) and the fund of the State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals (No. SKL-SPM-201521).

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Authors and Affiliations

  1. State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming, China

    Yongyun Mao, Hongwei Yang, Changyi Hu, Junmei Guo, Xianwei Meng & Yuwen Yang

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  1. Yongyun Mao
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  2. Hongwei Yang
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  3. Changyi Hu
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  4. Junmei Guo
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Correspondence to Yongyun Mao.

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Mao, Y., Yang, H., Hu, C. et al. Large-scale synthesis of AgNWs with ultra-high aspect ratio above 4000 and their application in conductive thin film. J Mater Sci: Mater Electron 28, 5308–5314 (2017). https://doi.org/10.1007/s10854-016-6188-4

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