Eur. Phys. J. Appl. Phys. 86, 20301 (2019)
https://doi.org/10.1051/epjap/2019190049

Regular Article

Electrochromic properties of Mo-doped V₂O₅ thin films deposited by spray pyrolysis process^★

¹ Laboratory Optoelectronics and Physical Chemistry of Materiaux, Ibn Tofail University, Faculty of Sciences, BP 133 14000 Kenitra, Morocco
² Laboratory of Materials and Valorizations of Natural Resources, University Abdelmalek Essaadi, Tangier, Morocco
³ The Engineering Sciences Laboratory for Energy, National Engineering School of Applied Sciences. Chouaib Doukkali University of El Jadida, BP 1166, El Jadida Plateau 2400, Morocco

^* e-mail: mrigalasmaa@gmail.com

Received: 27 February 2019
Received in final form: 11 March 2019
Accepted: 3 June 2019
Published online: 21 June 2019

Abstract

In this work, we have studied the Mo effect on V₂O₅ thin films, the samples were deposited by spray pyrolysis technique on heated glass substrates at 500 °C. The dopant amount was varied at different concentration, 2%, 4% and 6%. Different techniques were carried out, in order to studied the Mo effect on V₂O₅, such as XRD, Raman, SEM, AFM and electrochemical analysis. From the obtained results, all the samples exhibited orthorhombic structure with (001) predominant orientation. The optical properties of Mo concentration effect were studied in their colored and discolored states. These electrochemical studies were performed in LiClO₄ electrolyte with 0.5 mol/L of C₄H₆O₃. The transmittance value of the samples decreased from 76% to 10% at 690 nm, when the samples have changed color, from colored state to discolored state respectively.