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2021 Vol.31, Issue 3 Preview Page
Viologen Based All-in-one Flexible Electrochromic Devices

바이올로진 기반의 일체형 유연 전기변색소자

Bo-Seong Park*
,
Hyun-Jeong Kim*
,
Hyeonho Shin
,
Seongmin Park
,
Jaeun Lee
,
Sunggun Jeon
,
Yoon-Chae Nah†
박 보성*
,
김 현정*
,
신 현호
,
박 성민
,
이 재운
,
전 성건
,
나 윤채†
School of Energy, Materials, and Chemical Engineering, Korea University of Technology and Education, Cheonan, Chungnam 31253, Republic of Korea
한국기술교육대학교 에너지신소재화학공학부

* These authors contributed equally to his work.

†Corresponding author E-Mail : ycnah@koreatech.ac.kr (Y.-C. Nah, Korea Univ. Technol. Education)
March 2021. pp. 132-138
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Abstract

Electrochromic devices (ECDs) have been drawing great attention due to their high color contrast, low power consumption, and memory effect, and can be used in smart windows, automatic dimming mirrors, and information display devices. As with other electronic devices such as LEDs (light emitting diodes), solar cells, and transistors, the mechanical flexibility of ECDs is one of the most important issue for their potential applications. In this paper, we report on flexible ECDs (f-ECDs) fabricated using an all-in-one EC gel, which is a mixture of electrolyte and EC material. The f-ECDs are compared with rigid ECDs (r-ECDs) on ITO glass substrate in terms of color contrast, coloration efficiency, and switching speed. It is confirmed that the f-ECDs embedding all-in-one gel show strong blue absorption and have competitive EC performance. Repetitive bending tests show a degradation of electrochromic performance, which must be improved using an optimized device fabrication process.

Keywords
electrochromic device
all-in-one gel
viologen
flexible
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Information
  • Publisher :Materials Research Society of Korea
  • Publisher(Ko) :한국재료학회
  • Journal Title :Korean Journal of Materials Research
  • Journal Title(Ko) :한국재료학회지
  • Volume : 31
  • No :3
  • Pages :132-138
  • Received Date : 2021-01-28
  • Revised Date : 2021-02-04
  • Accepted Date : 2021-02-04
  • DOI :https://doi.org/10.3740/MRSK.2021.31.3.132
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