2019-Sustainable Industrial Processing Summit
SIPS2019 Volume 9: Tressaud Intl. Symp. / Solid State Chemistry for Applications and Sustainable Development
| Editors: | F. Kongoli, M.A. Alario Franco, J. Etourneau, S. Kalogirou, F.D.S. Marquis, R. Martins, K. Poeppelmeier, B. Raveau, Y. Shimakawa, M. Takano |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2019 |
| Pages: | 130 pages |
| ISBN: | 978-1-989820-08-7 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Color Tuning for Electrochromic Displays
Aline ROUGIER1; Issam Mjejri2; Romain Futsch3;1INSTITU DE CHIMIE DE LA MATIèRE CONDENSéE DE BORDEAUX, Pessac, France; 2ICMCB, Pessac, France; 3ICMCB, LUQUET DURANTON, Pessac, France;
Type of Paper: Invited
Id Paper: 400
Topic: 52
Abstract:
Smart materials are the salient feature of our modern e-connected society. Among them, optical materials are continuously evolving and finding more areas of application, such as the electrochromic windows in the Boeing 787 Dreamliner and Gentex Corporation’s antiglare mirrors. Electrochromic smart windows can be used in cars or buildings to adjust brightness or in spacecraft to moderate the intense thermal fluctuations by switching between light/infrared transmission and reflection. Electrochromic materials and devices change their optical properties in a reversible and persistent way under an applied voltage1. The most frequently used electrochromic compounds include transition metal oxides, such as WO3, MoO3, TiO2, IrO2, V2O5, NiO, Prussian blue (iron ferrocyanide) analogues and organic polymers, such as polyaniline, polypyrrole, and polythiophen. Inorganic electrochromic materials are stable and WO3 is central to most applications, however their range of available colors and brightness are limited. On the contrary, organic polymers show high color efficiency and a huge range of colors but suffer from limited stability-particularly when exposed to the ambient environment.
Aiming at improving EC properties for displays applications, our approach combines hybrid materials and novel design for ambient air and room temperature fabrication. In this presentation, focusing in particular on enlarging the palette of color, the advantage of mixing oxides and polymers will be demonstrated. As an example, the addition of iron oxide on poly(3,4-ethylenedioxythiophen), allows to switch not only from light to deep blue but also from blue to red2. An additional step towards multichromism can be achieved by using vanadium oxides based devices reaching color modulation from orange to green and blue3.
Acknowledments : This activity included in the SUPERSMART project has received funding from the European Institute of Innovation and Technology (EIT). This body of the European Union receives support from the European Union’s Horizon 2020 research and innovation program.
Keywords:
Advanced Characterization Techniques and Applications; Advances in the synthesis routes; Design of materials for sustainable energy production;References:
[1] C. G. Granqvist, Handbook of Inorganic Materials, 1995.[2] D. Levasseur, I. Mjejri, T. Rolland, A. Rougier, Polymers 11(1) (2019) 179.
[3] I. Mjejri, M. Gaudon, G. Song, C. Labrugère, A . Rougier ACS Applied Energy Materials, 1(6) (2018) 2721-2729.