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ISSN : 1225-0562(Print)
ISSN : 2287-7258(Online)
Korean Journal of Materials Research Vol.29 No.2 pp.87-91
DOI : https://doi.org/10.3740/MRSK.2019.29.2.87

Fabrication of Stretchable Ag Nanowire Electrode and its Electrochromic Application

Jin-Young Lee1,Song-Yi Han2,Yoon-Chae Nah2†,Jongwoon Park1†
1School of Electrical, Electronic, and Communication Engineering, Korea University of Technology and Education, Cheonan, Chungnam 31253, Republic of Korea
2School of Energy, Materials, and Chemical Engineering, Korea University of Technology and Education, Cheonan, Chungnam 31253, Republic of Korea
†Corresponding author E-Mail : ycnah@koreatech.ac.kr (Y.-C. Nah, Koreatech) pjwup@koreatech.ac.kr (J. Park, Koreatech)

Abstract

We report on stretchable electrochromic films of poly(3-hexylthiophene) (P3HT) fabricated on silver nanowire (AgNW) electrodes. AgNWs electrodes are prepared on polydimethylsiloxane (PDMS) substrates using a spray coater for stretchable electrochromic applications. On top of the AgNW electrode, poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is introduced to ensure a stable resistance over the electrode under broad strain range by effectively suppressing the protrusion of AgNWs from PDMS. This bilayer electrode exhibits a high performance as a stretchable substrate in terms of sheet resistance increment by a factor of 1.6, tensile strain change to 40%, and stretching cycles to 100 cycles. Furthermore, P3HT film spin-coated on the bilayer electrode shows a stable electrochromic coloration within an applied voltage, with a color contrast of 28.6%, response time of 4-5 sec, and a coloration efficiency of 91.0 cm2/C. These findings indicate that AgNWs/PEDOT:PSS bilayer on PDMS substrate electrode is highly suitable for transparent and stretchable electrochromic devices.

신축성있는 Ag 나노와이어 전극의 제조 및 전기변색 응용

이진영1,한송이2,나윤채2†,박종운1†
1한국기술교육대학교 전기·전자·통신공학부, 2한국기술교육대학교 에너지신소재화학공학부

초록

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