Plasma Polymerization of Organovanadium Oxides onto Flexible PET/ITO Substrates for Flexible Electrochromic Devices

The electrochromic properties of VOxCy films deposited onto 40 Ω · square−1 flexible PET/ITO substrates by low‐temperature plasma polymerization were investigated. The organic precursor was carried by Ar/O2 and polymerized by r.f. power at room temperature; the plasma‐polymerized films were proven to provide extraordinary electrochromic properties of light modulation with up to 35.8% of transmittance variance. Cyclic voltammetry and cyclic potentiostatic switching measurements demonstrated that only low driving voltages from −0.6 to 1 V were needed to provide reversible Li+ ion insertion and extraction. magnified image