Current state of the art for NOC-AGC electrochromic windows for architectural and automotive applications

T. Kubo*, T. Shinada, Y. Kobayashi, H. Imafuku, T. Toya, S. Akita, Yoshinori Nishikitani, H. Watanabe

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


We have designed and synthesized a large number of donor-acceptor type organic electrochromic (EC) materials to increase the resistance to ultraviolet irradiation. The guiding principle for the molecular design is given briefly. One of the materials is a viologen-ferrocene EC material. In this paper, we report two different types of electrochromic windows (ECWs): one is fabricated with a viologen-ferrocene EC material, and the other with a carbon-based electrode. The coloration process of the viologen-based ECW is also discussed with reference to the driving voltage dependence. Outdoor weathering tests were carried out on ECWs designed for automotive applications. The 2-year outdoor weathering tests suggest a potentially high durability.

Original languageEnglish
Pages (from-to)209-216
Number of pages8
JournalSolid State Ionics
Issue number1-4
Publication statusPublished - 2003 Dec
Externally publishedYes


  • Carbon-based counter electrode
  • Donor-acceptor type organic electrochromic material
  • Electrochromic window
  • Outdoor weathering tests
  • Ultraviolet irradiation

ASJC Scopus subject areas

  • Electrochemistry
  • Physical and Theoretical Chemistry
  • Energy Engineering and Power Technology
  • Materials Chemistry
  • Condensed Matter Physics


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