Proton conductivity of spin-coated Ta2O5·nH2O amorphous thin films from peroxo-polytantalate solution

Y. Sone, Akira Kishimoto, T. Kudo

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Peroxo-polytantalic acid (Ta-IPA) was obtained by a direct reaction of Ta(OC2H5) with H2O2. Using its water-based solution, amorphous thin films with excellent homogeneity could easily be fabricated on ITO-glass substrates by a conventional spin-coating technique. Electrical conductivity of this sample was measured with an ac impedance method, revealing that both temperature and humidity dependences of ionic conductivity (ca. 4.0×10-1 S cm-1 at 20°C) were quite small. Furthermore, all solid state ECD prototype was fabricated by combining this film electrolyte with electrochromic film (hydrous tungsten oxide film derived from peroxo-polytungstic acid). Electrochromic characteristics of this all solid state device were favorable.

Original languageEnglish
Pages (from-to)53-59
Number of pages7
JournalSolid State Ionics
Volume66
Issue number1-2
DOIs
Publication statusPublished - 1993
Externally publishedYes

Fingerprint

Proton conductivity
Amorphous films
Solid state devices
solid state devices
ITO glass
Thin films
conductivity
acids
Acids
tungsten oxides
Coating techniques
protons
Spin coating
Ionic conductivity
thin films
ITO (semiconductors)
ion currents
Electrolytes
Oxide films
homogeneity

ASJC Scopus subject areas

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

Cite this

Proton conductivity of spin-coated Ta2O5·nH2O amorphous thin films from peroxo-polytantalate solution. / Sone, Y.; Kishimoto, Akira; Kudo, T.

In: Solid State Ionics, Vol. 66, No. 1-2, 1993, p. 53-59.

Research output: Contribution to journalArticle

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