Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/3911
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dc.contributor.authorRavi, R-
dc.contributor.authorSurendren, S-
dc.contributor.authorDeb, B-
dc.date.accessioned2021-11-18T15:58:22Z-
dc.date.available2021-11-18T15:58:22Z-
dc.date.issued2021-02-
dc.identifier.citationSurfaces and Interfaces; 22:100860en_US
dc.identifier.urihttps://doi.org/10.1016/j.surfin.2020.100860-
dc.identifier.urihttp://hdl.handle.net/123456789/3911-
dc.description.abstractVanadium pentoxide (V2O5) based electrochromic devices (ECD) are notable for electropolychromism owing to their adjacent multiple oxidation states in the energy space. V2O5 also exhibits high theoretical capacitance, therefore have excellent potential to be utilized in various multifunctional devices; although these devices suffer from poor electrochemical stability. Herein, we report electrodes fabricated by overcoating hydrated-V2O5 (HVO) films with a thin layer of PEDOT:PSS. The ECDs with lower thickness HVO coatings showed multiple color switching representing V5+(orange/yellow), intermediate (green) and V4+ (blue) states while only partial reduction of V5+ ⇔ intermediate states (V4++V5+) could be obtained for the uncoated HVO. In addition, we observed almost no degradations for the cyclic stabilities of bilayered devices (measured for 1000 cycles) compared to a huge ~70% transmittance contrast compromise for bare HVOs. ECDs with higher thickness (~450 nm and above) V2O5 coatings offered improved color intensities and ~44% contrast retention. The differences in the electrochemical response was investigated by impedance studies that revealed a decoupling of the responses between the individual layers for the higher thickness variant.en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectV2O5en_US
dc.subjectPEDOT:PSSen_US
dc.subjectelectrochromic deviceen_US
dc.subjectbilayeren_US
dc.subjectcyclic stabilityen_US
dc.titleStudies on All-Solid Electrochromic Devices Fabricated by a Bilayered Assembly of Hydrated Vanadium Pentoxide and PEDOT:PSS Coatingsen_US
dc.typeArticleen_US
Appears in Collections:2021



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