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Proceedings Paper

W oxide/polymer laminate/V oxide electrochromic smart windows: recent advances
Author(s): Andris Azens; A. Talledo; Anne M. Andersson; Gunnar A. Niklasson; B. A. Stjerna; Claes-Goeran Granqvist; James R. Stevens
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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 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).

Paper Details

Date Published: 25 November 1992
PDF: 15 pages
Proc. SPIE 1728, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XI: Chromogenics for Smart Windows, (25 November 1992); doi: 10.1117/12.130551
Show Author Affiliations
Andris Azens, Chalmers Univ. of Technology and Univ. of Gothenburg (Sweden)
A. Talledo, Chalmers Univ. of Technology and Univ. of Gothenburg (Sweden)
Anne M. Andersson, Chalmers Univ. of Technology and Univ. of Gothenburg (Sweden)
Gunnar A. Niklasson, Chalmers Univ. of Technology and Univ. of Gothenburg (Sweden)
B. A. Stjerna, Chalmers Univ. of Technology and Univ. of Gothenburg (Sweden)
Claes-Goeran Granqvist, Chalmers Univ. of Technology and Univ. of Gothenburg (Sweden)
James R. Stevens, Univ. of Guelph (Canada)


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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