Thermochromic VO[sub]2[/sub] Films for Energy-Efficient Windows

S. M. Babulanam; T. S. Eriksson; G. A. Niklasson; C. G. Granqvist

doi:10.1117/12.936660

23 February 1987 Thermochromic VO₂ Films for Energy-Efficient Windows

S. M. Babulanam, T. S. Eriksson, G. A. Niklasson, C. G. Granqvist

Proceedings Volume 0692, Materials and Optics for Solar Energy Conversion and Advanced Lightning Technology; (1987) https://doi.org/10.1117/12.936660
Event: 30th Annual Technical Symposium, 1986, San Diego, United States

Abstract

VO2 films were produced by reactive e-beam evaporation followed by annealing post-treatment. Electrical measurements demonstrated a semiconductor-metal transition at Tc ~ 60°C. Spectrophotometry showed that the near-infrared solar transmittance was reduced when Tc was exceeded while the luminous transmittance remained relatively unchanged. This thermochromism may be utilized for regulating the energy throughput of windows. Practical application hinges on improved transmittance and on Tc-depression. These goals can be accomplished to some extent by dielectric overlayers, as verified by measurements on SiO2-coated VO2 films.

Citation Download Citation

S. M. Babulanam, T. S. Eriksson, G. A. Niklasson, and C. G. Granqvist "Thermochromic VO₂ Films for Energy-Efficient Windows", Proc. SPIE 0692, Materials and Optics for Solar Energy Conversion and Advanced Lightning Technology, (23 February 1987); https://doi.org/10.1117/12.936660

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