Electrochromic phenomena in transition metal oxide thin films prepared by thermal evaporationElectrochromic phenomena in transition metal oxide thin films prepared by thermal evaporation Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2015-10-241998enWe present an experimental study on the electrochromic properties of MoO3, WO3 and mixed WO3-MoO3 thin films prepared by thermal evaporation. We have constructed symmetric and quasi-symmetric electrochromic cells incorporating the evaporated oxide films as electrochromic layers. Li+ doped V2O5 films served as ion storage layers. The symmetric cells were found to exhibit significantly improved optical properties compared to the quasi-symmetric ones, with very low luminous transmittance values in the colored state, which makes them suitable for large-area window applications.http://creativecommons.org/licenses/by/4.0/Ionics45321-329 Papaefthimiou Spiros Παπαευθυμιου Σπυριδων Leftheriotis G. Yianoulis P. Springer Verlag