Barrios Puerto, DavidVergaz Benito, RicardoTorres Zafra, Juan CarlosVega Colado, CésarSánchez Pena, José ManuelViñuales, Ana2014-10-202014-10-202012-12IEEE Photonics Journal (2012), 4 (6), 2105-2115.943-0655http://hdl.handle.net/10016/19525Proceedings of: E-MRS 2011 Fall Meeting. Symposium G. New trends in chromogenic materials and devices. Warsaw, Poland, September 19-23, 2009.Blue viologen-based electrochromic devices on glass substrates were constructed with different internal active layer thickness by means of a thermoplastic spacer (DuPontTM surlyn1702). Optical measurements, chronoamperometry, and cyclic voltammetry (CV) were the techniques used for characterization. Coloration properties such as switching times for coloring and bleaching processes, coloration efficiency, and effective charge density, previously studied for a single device, are now obtained for several devices with different thicknesses.11application/pdfeng© 2012 IEEEElectrochromicsViologensElectrooptical devicesOptical propertiesImpedance spectroscopyCyclic voltammetry (CV)conference paperElectrónicaÓptica10.1109/JPHOT.2012.2227249open access210562115IEEE Photonics Journal4CC/0000015808