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Nanostructure-dependent colouration efficiency of electrochromic coatings using 0D, 1D, and 2D WO₃ for smart windows

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dc.contributor.authorDadkhah, M.
dc.contributor.authorNine, M.J.
dc.contributor.authorPurasinhala, K.
dc.contributor.authorSandhu, G.S.
dc.contributor.authorLosic, D.
dc.date.issued2024
dc.descriptionOnlinePubl,
dc.description.abstractTowards the development of highly efficient electrochromic coatings, the crystallinity, morphology (e.g. size and shape) of electrochromic nanomaterials, and their charge insertion capacities play a significant role. Herein, we report the structure-dependent colouration effciency in electrochromic coatings based on the use of 0D, 1D and 2D tungsten trioxide (WO₃) nanostructures. A series of WO₃ with different nanostructures were prepared and used as working electrodes to fabricate electrochromic devices for smart windows applications. Facile spray coating was applied on fluorine-doped tin oxide (FTO) substrate to make ∼70 % transparent working electrodes to investigate their charge insertion capacities, electrochromic active surface area, and colouration efficiency. Results showed that the 2D WO₃ nanoflakes displayed the highest diffusion coefficient for the intercalation of 1.52 × 10 ¯¹⁰ cm²/s with an increased electrochemical active surface area of 25.10 mF/cm², a large modulation of optical reflectance (42.63 %) with 3.79 s shorter response time for bleaching and a greater colouration efficiency (CE) value (89.29 cm²/C) at 700 nm compared to the CE value for 1D WO₃ (of 22 cm²/C) and 0D WO₃ (8 cm²/C). The outcome of this study provides a new insight and valuable contribution to design an efficient electrochromic coating by controlling and optimising the nanostructures of selective electrochromic materials.
dc.description.statementofresponsibilityMahnaz Dadkhah, Md Julker Nine, Kosala Purasinhala, Gurleen Singh Sandhu, Dusan Losic
dc.identifier.citationNano Materials Science, 2024; 8(2):1-9
dc.identifier.doi10.1016/j.nanoms.2024.09.003
dc.identifier.issn2096-6482
dc.identifier.issn2589-9651
dc.identifier.orcidNine, M.J. [0000-0002-5740-8627]
dc.identifier.orcidPurasinhala, K. [0000-0002-2856-468X]
dc.identifier.orcidSandhu, G.S. [0000-0002-2812-6612]
dc.identifier.orcidLosic, D. [0000-0002-1930-072X]
dc.identifier.urihttps://hdl.handle.net/2440/146939
dc.language.isoen
dc.publisherElsevier BV
dc.relation.granthttp://purl.org/au-research/grants/arc/IH210100025
dc.rights© 2024 Chongqing University. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
dc.source.urihttp://dx.doi.org/10.1016/j.nanoms.2024.09.003
dc.subjectElectrochromic devices; Smart window; WO3 nanostructures; Colouration efficiency; Spray coating
dc.titleNanostructure-dependent colouration efficiency of electrochromic coatings using 0D, 1D, and 2D WO₃ for smart windows
dc.typeJournal article
pubs.publication-statusPublished online

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