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신축성 유기발광다이오드를 위한 은 나노와이어 기반의 신축성 투명 전극 기판 연구
정현수,고혁,박계춘,윤창훈,Jung, Hyunsu,Go, Hyeck,Park, Gye-Choon,Yun, Changhun 한국전기전자재료학회 2017 전기전자재료학회논문지 Vol.30 No.10
The proposed stretchable transparent electrodes based on silver nanowires (AgNWs) were prepared on a polyurethane (PU) substrate. In order toavoid the surface roughness caused by the silver nanowires, a titanium oxide ($TiO_2$) buffer layer was addedby coating and heating the organometallic sol-gel solution. The fabricated stretchable electrodes showedan electrical sheet resistance of $24{\Omega}sq^{-1}$, 78% transmittance at 550 nm, and an average surface roughness below 5 nm. Furthermore, the AgNW-based electrode maintained its initial electrical resistance under 130% strain testing conditions, without the assistance of additional conductive polymer layers. In this paper, the critical role of the $TiO_2$ buffer layer between the AgNW network and the PU substrate has been discussed.