Аннотация
Abstract Fullerene coated \ITO\ electrodes were prepared by a vacuum thermal evaporation system where fullerene (C60) powders were used as a deposition source. The fullerene coated electrodes act as an ion storage layer for electrochromic devices (ECDs). The \ECDs\ are comprised of Prussian blue (PB) electrodes as the \EC\ electrode, fullerene coated \ITO\ electrodes as the counter electrode, and an electrolyte containing LiClO4 salt. By employing fullerene coated \ITO\ electrodes, the lower transmittance in the colored state (Tc) was achieved because of the lower transmittance of fullerene coated ITO. It led to an increase in the change in optical density (ΔOD) according to the increase in the thickness of the fullerene films. Also, the charge density per electrode area (Qd) of the \ECDs\ increased with the increase in the thickness of the fullerene films. This result indicates that the amounts of lithium ions and \PB\ molecules, which are used for the \EC\ phenomenon, were increased. As a result, \EC\ properties such as the ΔOD and response time were enhanced by employing fullerene coated \ITO\ electrodes because fullerene films provided the ion storage layer as the counter electrode of the \PB\ electrode.
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