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Proceedings Paper

Electrochromic properties of MnO2 thin films
Author(s): Susana Ines Cordoba de Torresi; Annette Gorenstein
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Paper Abstract

Electrochromic tungsten oxyfluoride thin films were made by reactive magnetron sputtering of W in Ar+O2+CF4. A moderate CF4 fraction led to deposition at enhanced rates and films with fairly neutral colour in their dark state. Transparent vanadium oxyfluoride films were made analogously; they were annealing posttreated in Ar+02+CF4. By fluorination it was possible to avoid the short-wavelength absorption that otherwise limits the usefulness of V205 in electrochromic smart windows. A transparent, adhesive, viscoelastic polymer electrolyte laminate was developed. It has good voltammetric cycling capability (106 times), good optical transmittance, and high conductivity, ranging from 10-6 S/cm (-10°C) to 10-3 S/cm (80°C).

Paper Details

Date Published: 25 November 1992
PDF: 11 pages
Proc. SPIE 1728, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XI: Chromogenics for Smart Windows, (25 November 1992); doi: 10.1117/12.130533
Show Author Affiliations
Susana Ines Cordoba de Torresi, UNICAMP (Brazil)
Annette Gorenstein, UNICAMP (Brazil)


Published in SPIE Proceedings Vol. 1728:
Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XI: Chromogenics for Smart Windows

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