Potentiostatic rejuvenation of electrochromic WO3 thin films: Exploring the effect of polyethylene oxide in LiClO4-Propylene carbonate electrolytes

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dc.authoridSORAR, IDRIS/0000-0002-1082-7576
dc.contributor.authorSorar, Idris
dc.contributor.authorPehlivan, Ilknur Bayrak
dc.contributor.authorBohlin, Jan
dc.contributor.authorGranqvist, Claes G.
dc.contributor.authorNiklasson, Gunnar A.
dc.date.accessioned2024-09-18T20:16:44Z
dc.date.available2024-09-18T20:16:44Z
dc.date.issued2020
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractThin films of electrochromic (EC) W oxide were prepared by reactive DC magnetron sputtering and were immersed in electrolytes of LiClO4 in propylene carbonate with 0.5-3.0 wt% of added polyethylene oxide (PEO). Charge density and optical modulation range were found to diminish monotonically upon prolonged voltammetric cycling with concurrent optical transmittance measurements for up to 500 and 200 cycles in the voltage ranges 2.0-4.0 and 1.5-4.0 V vs. Li/Li+, respectively. Rejuvenation of the degraded EC films was then accomplished by potentiostatic treatment at 6.0 V vs. Li/Li+ for 20 h and has been ascribed to expulsion of trapped Li ions. Importantly, degradation subsequent to rejuvenation was found to progress at a significantly lowered pace than for as-deposited films in proportion with the amount of PEO especially for harsh voltammetric cycling in the voltage range 1.5-4.0 V vs. Li/Li+. The results of this explorative study are of considerable value for the development of highly durable EC devices such as polymer-laminated smart glazing for energy efficient buildings with excellent indoor comfort.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK); Swedish Research Council [VR-2016-03713]; Swedish Research Council [2016-03713] Funding Source: Swedish Research Council; Vinnova [2016-03713] Funding Source: Vinnovaen_US
dc.description.sponsorshipIS thanks the Scientific and Technological Research Council of Turkey (TUBITAK) for financial support to work at Uppsala University. Financial support from the Swedish Research Council (contract VR-2016-03713) is gratefully acknowledged.en_US
dc.identifier.doi10.1016/j.solmat.2020.110767
dc.identifier.issn0927-0248
dc.identifier.issn1879-3398
dc.identifier.scopus2-s2.0-85090592468en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.solmat.2020.110767
dc.identifier.urihttps://hdl.handle.net/20.500.12483/9724
dc.identifier.volume218en_US
dc.identifier.wosWOS:000579903700024en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofSolar Energy Materials and Solar Cellsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectElectrochromismen_US
dc.subjectThin filmsen_US
dc.subjectTungsten oxideen_US
dc.subjectElectrochemical degradationen_US
dc.subjectPotentiostatic rejuvenationen_US
dc.subjectPEOen_US
dc.titlePotentiostatic rejuvenation of electrochromic WO3 thin films: Exploring the effect of polyethylene oxide in LiClO4-Propylene carbonate electrolytesen_US
dc.typeArticleen_US

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