dc.contributor.authorCai, Guofa
dc.contributor.authorCui, Mengqi
dc.contributor.authorKumar, Vipin
dc.contributor.authorDarmawan, Peter
dc.contributor.authorWang, Jiangxin
dc.contributor.authorWang, Xu
dc.contributor.authorEh, Alice Lee-Sie
dc.contributor.authorQian, Kai
dc.contributor.authorLee, Pooi See
dc.identifier.citationCai, G., Cui, M., Kumar, V., Darmawan, P., Wang, J., Wang, X., et al. (2016). Ultra-large optical modulation of electrochromic porous WO3 film and the local monitoring of redox activity. Chemical Science, 7, 1373-1382.en_US
dc.description.abstractPorous WO3 films with ultra-high transmittance modulation were successfully fabricated on different substrates by a novel, facile and economical pulsed electrochemical deposited method with 1.1 s interval time between each pulse. The near ideal optical modulation (97.7% at 633 nm), fast switching speed (6 and 2.7 s), high coloration efficiency (118.3 cm2 C−1), and excellent cycling stability are achieved by the porous WO3 on ITO-coated glass. The outstanding electrochromic performances of the porous WO3 film were mainly attributed to the porous structure, which facilitates the charge-transfer, promotes the electrolyte infiltration and alleviates the expansion of the WO3 during H+ insertion compared to that of the compact structure. In addition, the relationships between the structural and electrochemical activity of the electrochromic WO3 films were further explored by the scanning electrochemical microscopy. These results testify that the porous structure can promote the infiltration of electrolyte and reduce the diffusion path, which consequently enhance the electrochemical activity.en_US
dc.description.sponsorshipASTAR (Agency for Sci., Tech. and Research, S’pore)en_US
dc.format.extent10 p.en_US
dc.relation.ispartofseriesChemical Scienceen_US
dc.rights© 2016 The Royal Society of Chemistry. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.en_US
dc.subjectElectrochromic materialsen_US
dc.titleUltra-large optical modulation of electrochromic porous WO3 film and the local monitoring of redox activityen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.description.versionPublished versionen_US

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