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

Authors
Lee, Jong-GunKim, Do-YeonLee, Jong-HyukSinha-Ray, SumanYarin, Alexander L.Swihart, Mark T.Kim, DonghwanYoon, Sam S.
Issue Date
Jan-2017
Publisher
WILEY-V C H VERLAG GMBH
Keywords
self-fusion; silver nanowires; supersonic kinetic spraying; transparent conducting films
Citation
ADVANCED FUNCTIONAL MATERIALS, v.27, no.1
Indexed
SCI
SCIE
SCOPUS
Journal Title
ADVANCED FUNCTIONAL MATERIALS
Volume
27
Number
1
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/85033
DOI
10.1002/adfm.201602548
ISSN
1616-301X
1616-3028
Abstract
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 Omega sq(-1), combined with high transmittance, >90%. These electrically conducting, transparent, and flexible coatings can be deposited over a 100 cm(2) area in approximate to 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.
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