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

Y. Sone; A. Kishimoto; T. Kudo

doi:10.1016/0167-2738(93)90028-2

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

Y. Sone, A. Kishimoto, T. Kudo

Research output: Contribution to journal › Article › peer-review

31 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 language	English
Pages (from-to)	53-59
Number of pages	7
Journal	Solid State Ionics
Volume	66
Issue number	1-2
DOIs	https://doi.org/10.1016/0167-2738(93)90028-2
Publication status	Published - Oct 1993
Externally published	Yes

ASJC Scopus subject areas

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

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

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.",

author = "Y. Sone and A. Kishimoto and T. Kudo",

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T1 - Proton conductivity of spin-coated Ta2O5·nH2O amorphous thin films from peroxo-polytantalate solution

AU - Sone, Y.

AU - Kishimoto, A.

AU - Kudo, T.

PY - 1993/10

Y1 - 1993/10

N2 - 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.

AB - 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.

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

Abstract

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