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

Jong Gun Lee, Do Yeon Kim, Jong Hyuk Lee, Suman Sinha-Ray, Alexander Yarin, Mark T. Swihart, Donghwan Kim, Suk Goo Yoon

Research output: Contribution to journalArticle

34 Citations (Scopus)

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 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.

Original languageEnglish
Article number1602548
JournalAdvanced Functional Materials
Volume27
Issue number1
DOIs
Publication statusPublished - 2017 Jan 5

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Keywords

  • self-fusion
  • silver nanowires
  • supersonic kinetic spraying
  • transparent conducting films

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Condensed Matter Physics
  • Electrochemistry

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