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SCI Article

Plasmonic-Tuned Flash Cu Nanowelding with Ultrafast Photochemical-Reducing and Interlocking on Flexi
Author Hong, Sukjoon (Dept Mech Engn);
Corresponding Author Info Lee, KJ (reprint author), Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, 291 Daehak Ro, Daejeon 34141, South Korea.; Ko, SH (reprint author), Seoul Natl Univ, Dept Mech Engn, Ansan 15588, Gyeonggi Do, South Korea.
E-mail 메일maxko@snu.ac.kr 메일 keonlee@kaist.ac.kr
Document Type Article
Source ADVANCED FUNCTIONAL MATERIALS Volume:27 Issue:29 Pages:- Published:2017
Times Cited 0
External Information pdfhttp://dx.doi.org/10.1002/adfm.201701138
Abstract Herein, a high-performance copper nanowire (Cu NW) network (sheet resistance approximate to 17 Omega sq(-1), transmittance 88%) fabricated by plasmonic-tuned flash welding (PFW) with ultrafast interlocking and photochemical reducing is reported, which greatly enhance the mechanical and chemical stability of Cu NWs. Xenon flash spectrum is tuned in an optimized distribution (maximized light intensity at 600 nm wavelength) through modulation of electron kinetic energy in the lamp by generating drift potential for preferential photothermal interactions. High-intensity visible light is emitted by the plasmonic-tuned flash, which strongly improves Cu nanowelding without oxidation. Near-infrared spectrum of the flash induced an interlocking structure of NW/polyethylene terephthalate interface by exciting Cu NW surface plasmon polaritons (SPPs), increasing adhesion of the Cu nanonetwork by 208%. In addition, ultrafast photochemical reduction of Cu NWs is accomplished in air by flash-induced electron excitations and relevant chemical reactions. The PFW effects of localized surface plasmons and SPPs on junction welding and adhesion strengthening of Cu network are theoretically studied as physical behaviors by finite-difference time-domain simulations. Finally, a transparent resistive memory and a touch screen panel are demonstrated by using the flash-induced Cu NWs, showing versatile and practical uses of PFW-treated Cu NW electrodes for transparent flexible electronics.
Web of Science Categories Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter
Funding Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [NRF-2016M3D1A1900035]; National Research Foundation of Korea (NRF) - Korean Government (MSIP) [NRF-2016R1A5A100992
Language English
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