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Production of Flexible Transparent Conducting Films of Self-Fused Nanowires via One-Step Supersonic Spraying

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posted on 03.12.2017 by J.G. Lee, D.Y. Kim, J.H. Lee, S. Sinha-Ray, A.L. Yarin, M.T. Swihart, D. Kim, S.S. Yoon
Scalable and economical manufacturing of flexible transparent conducting films (TCF) is a key barrier to widespread adoption of low-cost flexible electronics. Here, a simple, robust, and scalable method of flexible TCF formation using supersonic kinetic spraying is demonstrated. Silver nanowire (AgNW) suspensions are sprayed at supersonic speed to produce self-sintered films of AgNWs on flexible substrates. These films display remarkably low sheet resistance, <10 Ω sq−1, combined with high transmittance, >90%. These electrically conducting, transparent, and flexible coatings can be deposited over a 100 cm2 area in ≈30 s. Theoretical analysis reveals the underlying physical mechanism behind self-sintering, showing that self-sintering is enabled by the high velocity of impact in supersonic spraying.

Funding

This research was supported by the National Research Foundation GFHIM-2013M3A6B1078879 and the Industrial Strategic Technology Development Program (10045221) funded by the Ministry of Knowledge Economy (MKE, Korea).

History

Publisher Statement

This is the pre-peer reviewed version of the following article: Lee, J. G., Kim, D. Y., Lee, J. H., Sinha-Ray, S., Yarin, A. L., Swihart, M. T., Kim, D. and Yoon, S. S. Production of Flexible Transparent Conducting Films of Self-Fused Nanowires via One-Step Supersonic Spraying. Advanced Functional Materials. 2017. 27(1)., which has been published in final form at DOI: 10.1002/adfm.201602548.

Publisher

Wiley

issn

1616-301X

Issue date

11/11/2016

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