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Origin of the memory effect in electrochromic sputtered WO3 Films: composition, structure, or morphology?

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorFACEIRA, Brandon
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorTEULE-GAY, Lionel
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierPlateforme Aquitaine de Caractérisation des Matériaux [PLACAMAT]
dc.contributor.authorLE HÉBEL, Jade
hal.structure.identifierPlateforme Aquitaine de Caractérisation des Matériaux [PLACAMAT]
dc.contributor.authorLABRUGÈRE‐SARROSTE, Christine
hal.structure.identifierPlateforme Aquitaine de Caractérisation des Matériaux [PLACAMAT]
dc.contributor.authorIBALOT, Fabienne
hal.structure.identifierTamkang University [New Taipei] [TKU]
dc.contributor.authorHUANG, Hou‐yi
hal.structure.identifierTamkang University [New Taipei] [TKU]
dc.contributor.authorHUANG, Yu‐cheng
hal.structure.identifierTamkang University [New Taipei] [TKU]
dc.contributor.authorDONG, Chung‐li
hal.structure.identifierPlateforme Aquitaine de Caractérisation des Matériaux [PLACAMAT]
dc.contributor.authorSALVETAT, Jean‐paul
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorMAGLIONE, Mario
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorROUGIER, Aline
dc.date.issued2023
dc.identifier.issn2196-7350
dc.description.abstractEnThe memory effect property, described as a reversible color persistence while the potential is withdrawn, is of particular importance to reaching zero-energy consumption electrochromic devices. Nevertheless, often observed in organic materials, it is poorly studied in oxides. In this study, electrochromic tungsten oxide thin films are elaborated at different working pressures by radiofrequency magnetron sputtering. The influence of the deposition pressure on the electrochemical properties of WO3 films as well as on their memory effect is investigated. Three kinds of WO3 films can be distinguished: with irreversible blue coloration, with reversible coloration presenting a high memory effect, and with reversible coloration with a low memory effect. The origin of these discrepancies is studied through the composition, the local atomic environment, and the morphology of the WO3 thin films. An increase of transmittance at 550 nm as low as 15.8% in 48 h in air and 5.2% in 24 h in the electrolyte is recorded. This study highlights a better understanding of the memory effect property of electrochromic oxides for low-consumption energy electrochromic devices, pointing out morphology as a key parameter.
dc.language.isoen
dc.publisherWiley
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/
dc.title.enOrigin of the memory effect in electrochromic sputtered WO3 Films: composition, structure, or morphology?
dc.typeArticle de revue
dc.identifier.doi10.1002/admi.202300549
dc.subject.halChimie/Matériaux
bordeaux.journalAdvanced Materials Interfaces
bordeaux.page2300549
bordeaux.volume10
bordeaux.issue33
bordeaux.peerReviewedoui
hal.identifierhal-04219962
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04219962v1
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