Optical properties of thermochromic VO2 thin films on stainless steel: Experimental and theoretical studies

A. Lafort, H. Kebaili, S. Goumri-Said, O. Deparis, R. Cloots, J. De Coninck, M. Voué, F. Mirabella, F. Maseri, S. Lucas

Research output: Contribution to journalArticlepeer-review


Thermochromic films of VO were deposited by DC reactive magnetron sputtering on stainless steel substrate. Complex refractive indexes of VO were determined by ellipsometric spectroscopy (0.35-16.5 μm) for different film thicknesses. Optical simulations were performed to model the spectral reflectance of the film/substrate system for a film thickness of 100 nm and 200 nm and to monitor the optical contrast of the thermochromic layers by comparing the spectral reflectance at 25 °C and 100 °C. The good agreement observed between experimental and theoretical spectra demonstrates the adequacy of the model for predicting the optical properties of the samples.
Original languageEnglish
Pages (from-to)3283-3287
Number of pages5
JournalThin Solid Films
Issue number10
Publication statusPublished - 1 Mar 2011

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