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.

Abstracts
 1. 서 론
 2. 실험 방법
  2.1 PDMS 기판 제작
  2.2 AgNWs 전극 제작
  2.3 AgNWs 평탄화 및 이중층 전극 제작
  2.4 전기변색 박막의 제조 및 특성 평가
 3. 결과 및 고찰
 4. 결 론
 References

• 이진영(한국기술교육대학교 전기·전자·통신공학부) | Jin-Young Lee (School of Electrical, Electronic, and Communication Engineering, Korea University of Technology and Education)
• 박종운(한국기술교육대학교 전기·전자·통신공학부) | Jongwoon Park (School of Electrical, Electronic, and Communication Engineering, Korea University of Technology and Education) Corresponding author
• 한송이(한국기술교육대학교 에너지신소재화학공학부) | Song-Yi Han (School of Energy, Materials, and Chemical Engineering, Korea University of Technology and Education)
• 나윤채(한국기술교육대학교 에너지신소재화학공학부) | Yoon-Chae Nah (School of Energy, Materials, and Chemical Engineering, Korea University of Technology and Education) Corresponding author