상세정보
학술지
Long-lived Electrochromic Device with Multilevel Bistability based on Portable Film-type Polymer Electrolytes
- 발행일
- 202103
- 출처
- Solar Energy Materials & Solar Cells, v.221, pp.1-7
- ISSN
- 0927-0248
- 출판사
- Elsevier
- 협약과제
- 20JB3700, 전기변색 기술을 적용한 자동차용 투명디스플레이 소자 기술 개발, 류호준
- 초록
- Long-lived electrochromic devices (ECDs) with multilevel bistability based on a portable film-type polymer electrolyte (PFPE) were fabricated and their optical and electrical properties were characterized. WO3 and NiOx, deposited via a vacuum method, were used as electrochromic materials, and PFPEs were assembled in ECDs by a transfer method. The PFPEs were fabricated by inserting a polyvinyl acetal (PVA) based gel electrolyte between a light and a tight release films. The PFPE-based ECD operated reliably for at least 109,000 cycles and showed excellent bistability in multilevel open circuits. For 30 min after removing the applied operating voltage, the ECD maintained 90% and 99% of the original coloration and decoloration transmittance at 550 nm, respectively. The average coloration and decoloration consumed charge and efficiency over 109,000 operation cycles were 4.2 and ?닋4.5 mC/cm2 and 81.4 and ?닋74.8 cm2/C, respectively.
- KSP 제안 키워드
- Electrochromic device(ECD), Optical and electrical properties, Polymer electrolytes, Polyvinyl acetal, Transfer method, electrical properties(I-V curve), electrochromic materials, film-type, gel electrolyte, operating voltage