W oxide/polymer laminate/V oxide electrochromic smart windows: recent advances

Andris Azens; A. Talledo; Anne M. Andersson; Gunnar A. Niklasson; B. A. Stjerna; Claes-Goeran Granqvist; James R. Stevens

doi:10.1117/12.130551

25 November 1992 W oxide/polymer laminate/V oxide electrochromic smart windows: recent advances

Andris Azens, A. Talledo, Anne M. Andersson, Gunnar A. Niklasson, B. A. Stjerna, Claes-Goeran Granqvist, James R. Stevens

Author Affiliations +

Proceedings Volume 1728, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XI: Chromogenics for Smart Windows; (1992) https://doi.org/10.1117/12.130551
Event: Optical Materials Technology for Energy Efficiency and Solar Energy, 1992, Toulouse-Labege, France

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 color in their dark state. Transparent vanadium oxyfluoride films were made analogously; they were annealing post-treated in Ar+O₂+CF₄. By fluorination it was possible to avoid the short-wavelength absorption that otherwise limits the usefulness of V₂O₅ 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 degree(s)C) to 10^-3 S/cm (80 degree(s)C).

Citation Download Citation

Andris Azens, A. Talledo, Anne M. Andersson, Gunnar A. Niklasson, B. A. Stjerna, Claes-Goeran Granqvist, and James R. Stevens "W oxide/polymer laminate/V oxide electrochromic smart windows: recent advances", Proc. SPIE 1728, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XI: Chromogenics for Smart Windows, (25 November 1992); https://doi.org/10.1117/12.130551

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