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Advances in electrochromic device technology: Multiple roads towards superior durability
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.ORCID iD: 0000-0002-9885-3161
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.ORCID iD: 0000-0002-3419-462x
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
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2018 (English)In: Proceedings SVC, 2018, article id 9 pagesConference paper, Published paper (Refereed)
Abstract [en]

Most electrochromic (EC) devices must have a service lifetime of many years, and this is particularly so for “smart windows” in buildings with good energy efficiency and indoor comfort. The central part of oxide-based EC devices contains thin films based on W oxide and Ni oxide together with an interposed electrolyte. Depending on operating conditions, these films may show degradation at a slower or faster pace, and means to prevent or reverse this phenomenon, or as a minimum allow reliable lifetime prediction, have been sought ever since the beginnings of EC technology. Here we survey recent endeavors related to EC films of W oxide and Ni oxide and show that (i) electrochemical pretreatment of films in a liquid electrolyte can significantly improve durability, (ii) electrochemical posttreatment in a liquid electrolyte can rejuvenate degraded films, (iii) mixed oxides can have better durability and optical performance than corresponding pure oxides, and (iv) lifetime prediction is possible.

Place, publisher, year, edition, pages
2018. article id 9 pages
National Category
Materials Chemistry
Research subject
Engineering Science with specialization in Solid State Physics
Identifiers
URN: urn:nbn:se:uu:diva-368957OAI: oai:DiVA.org:uu-368957DiVA, id: diva2:1269399
Conference
Society of Vacuum Coaters 61st Annual Technical Conference, May 5-10, 2018, Orlando, FL, USA
Available from: 2018-12-10 Created: 2018-12-10 Last updated: 2019-03-06Bibliographically approved

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Granqvist, Claes GöranArvizu, Miguel AQu, Hui-YingWen, Rui-TaoNiklasson, Gunnar

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