Abstract
Abstract The CeO2-V2O5 mixed oxides thin films have been deposited by spray pyrolysis technique (SPT) onto a glass and fluorine doped tin oxide (FTO) coated glass substrates. The precursor solution containing cerium nitrate hexahydrate [Ce(NO3)2·6H2O] and vanadium trichloride (VCl3) having different volumetric proportions (0–5 vol% of Vanadium) in methanol. These films were characterized for their structural, morphological, compositional, optical, electrochromic and colorimetric analysis. The deposited films were polycrystalline with cubic fluorite crystal structure of CeO2. The band at 539 cm−1 is assigned to Ce–O stretching vibration and band at 1020 for crystalline V2O5. Hence, CeO2 and V2O5 phases for all the samples (V2-V5) were confirmed from IR study, and thereby samples acquire CeO2/V2O5 mixed composition. The ion storage capacity (ISC) of CeO2-V2O5 thin film with 4 vol% Vanadium was found to be maximum at 14 mC cm−2 in 0.5 M LiClO4 + PC electrolyte. The optically passive behavior of CeO2-V2O5 thin film was confirmed by its negligible transmission modulation (ΔT ∼ 6%) upon Li+ ion insertion/de-insertion, irrespective of the extent of Li+ ion intercalation. The optical modulation of sputter deposited electrochromic WO3 was found to be enhanced from 52 to 60% with rapid increase in coloration efficiency from 47 to 76 cm2C−1 was observed when CeO2-V2O5 is coupled as a counter electrode with WO3 in an electrochromic device (ECD).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
