Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Viologen-based All-in-one Electrochromic Devices with a Lateral Electrode Structure

평면전극구조를 갖는 바이올로진 기반의 일체형 전기변색소자

  • Kim, Hyun-Jeong (School of Energy, Materials, and Chemical Engineering, Korea University of Technology and Education) ;
  • Lee, Sang-Rae (School of Energy, Materials, and Chemical Engineering, Korea University of Technology and Education) ;
  • Choi, Jin-Hee (School of Energy, Materials, and Chemical Engineering, Korea University of Technology and Education) ;
  • Nah, Yoon-Chae (School of Energy, Materials, and Chemical Engineering, Korea University of Technology and Education)
  • 김현정 (한국기술교육대학교 에너지신소재화학공학부) ;
  • 이상래 (한국기술교육대학교 에너지신소재화학공학부) ;
  • 최진희 (한국기술교육대학교 에너지신소재화학공학부) ;
  • 나윤채 (한국기술교육대학교 에너지신소재화학공학부)
  • Received : 2020.02.13
  • Accepted : 2020.02.22
  • Published : 2020.02.28
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Abstract

Recently, electrochromic devices (ECDs) have gathered increasing attention owing to their high color contrast and memory effect, which make them highly applicable to smart windows, auto-dimming mirrors, sensors, etc. Traditional ECDs have a sandwich structure that contains an electrochromic layer between two ITO substrates. These sandwich-type devices are usually fabricated through the lamination of two electrodes and followed by the injection of a liquid electrolyte in the inner space. However, this process is sometimes complex and time consuming. In this study, we fabricated ECDs with a lateral electrode structure that uses only an ITO substrate and an all-in-one electrochromic gel, which is a mixture of electrolyte and electrochromic material. Furthermore, we investigated the EC properties of the lateral-type device by comparing it with a sandwich-type device. The lateral-type ECD shows strong blue absorption as the applied voltage increases and has a competitive coloration efficiency compared to the sandwich-type device.

Keywords

References

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