Eur. Phys. J. Appl. Phys. 48, 10502 (2009)
https://doi.org/10.1051/epjap/2009118

Li⁺ ions diffusion into sol-gel V₂O₅ thin films: electrochromic properties

¹ Laboratoire de Physique des Solides et des Couches Minces, Département de Physique, Faculté des Sciences Semlalia, BP. 2390, Marrakech, Maroc
² Laboratoire Matériaux et Energies Renouvelables (LMER), Département de Physique, Faculté des Sciences, BP. 8106, Université Ibn Zohr, Agadir, Maroc

Corresponding author: benmoussa@ucam.ac.ma

Received: 14 April 2008
Accepted: 28 April 2009
Published online: 4 July 2009

Abstract

V₂O₅ thin films were prepared by the sol-gel spin coating process. The Li⁺ ions insertion effect on optical and electrochromic properties of those films was studied. The diffusion coefficient was calculated using both cyclic voltammograms and chronoamperometric curves. The amount x of Li⁺ ions in Li_xV₂O₅ was also calculated. Finally, the electrochromic performance evolution characteristics such as the reversibility, coloration efficiency, coloration memory stability and response time were studied.