Towards the smart window: progress in electrochromics

Electrochromic devices have the ability to produce reversible and persistent changes of their optical properties. The phenomenon is associated with joint ion and electron transport into/out of an electrochromic thin film, in most cases being a transition metal oxide. This paper outlines the various...

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Bibliographic Details
Published in:Journal of non-crystalline solids 1997, Vol.218, p.273-279
Main Authors: Granqvist, C.G., Azens, A., Isidorsson, J., Kharrazi, M., Kullman, L., Lindström, T., Niklasson, G.A., Ribbing, C.-G., Rönnow, D., Strømme Mattsson, M., Veszelei, M.
Format: Article
Language:English
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Summary:Electrochromic devices have the ability to produce reversible and persistent changes of their optical properties. The phenomenon is associated with joint ion and electron transport into/out of an electrochromic thin film, in most cases being a transition metal oxide. This paper outlines the various applications of such devices in smart windows suitable for energy-conscious architecture, in variable-reflectance mirrors, and in display devices. Critical materials issues and design concepts are discussed. The paper also covers two specific research topics: computed electronic structure of crystalline WO 3 incorporating ionic species, showing how reflectance modulation emerges from a first-principles calculation; and Li + dynamics in heavily disordered Ti oxide, illustrating how diffusion constants derived from impedance spectroscopy can be reconciled with the Anderson—Stuart model.
ISSN:0022-3093
1873-4812
1873-4812
DOI:10.1016/S0022-3093(97)00145-2