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자료유형
학술저널
저자정보
Jae‑Chan Lee (Seoul National University) Jong‑Sung Lee (Seoul National University) Phillip Won (Seoul National University) Jung Jae Park (Seoul National University) Seok Hwan Choi (Seoul National University) Seung Hwan Ko (Seoul National University) Byoung‑Joon Kim (Andong National University) 이소연 (서울대학교) Young‑Chang Joo (Seoul National University)
저널정보
대한금속·재료학회 Electronic Materials Letters Electronic Materials Letters Vol.16 No.5
발행연도
2020.1
수록면
491 - 497 (7page)

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In past decades, stretchable conductors have been investigated for a wide range of applications, and the operation strain rangeof such devices varies by application. To commercialize stretchable devices, it is necessary to optimize the deformation ofstretchable electrodes based on a given device elongation range. Therefore, we investigated the deformation mechanics ofa silver nanowire (AgNW) electrode on an elastomeric substrate depending on its junction treatment method. At low-strain(< 15%), a thermally annealed AgNW electrode showed more stable resistance than a laser-welded AgNW electrode. Conversely,at high strain (> 20%), the thermally annealed AgNW electrode rapidly increased in resistance, while the laser-weldedAgNW electrode showed lower resistivity change. By in situ surface analysis and a repetitive tensile test, we observed thatthe thermally annealed AgNW electrode shows less cracking at low strain but the laser-welded AgNW electrode exhibitsfracturing of individual nanowires at low strain. Furthermore, at high strain, laser-welded AgNWs could slide to reducestress during elongation, resulting in a smaller change in resistance compared to that of thermally annealed AgNW electrode. These results indicate that optimization of adhesion is necessary to fabricate stretchable devices based on deformation range.

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