Electrochromic thin films coated from peroxo-polymolybdotungstate solutions

Sanae Takano, Akira Kishimoto, Koichiro Hinokuma, Tetsuichi Kudo

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Peroxo-polymolybdotungstates are formed by the direct reaction of a mixture of metallic Mo and W (for example, 5:5 mixture) with hydrogen peroxide solution. A homogeneous and amorphous thin film (0.4 microm, typically) is fabricated on an ITO glass substrate by spin-coating using such a solution. After heat-treatment at 120°C, it exhibits electrochromism excellent in both reversibility and response time in an organic Li-electrolyte. The film colored at -1 V (versus Ag/AgCl) shows rather flat absorption spectrum. Its color is dark grayish blue and the ΔOD between -1 and +0.5 V reaches 0.7 at 670 nm (λmax). Kinetic aspect of such electrochromic films will also be dicussed.

Original languageEnglish
Pages (from-to)636-641
Number of pages6
JournalSolid State Ionics
Issue numberPART 1
Publication statusPublished - 1994
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics


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