Electrochromic Performance of V2O5 Thin Films Grown by Spray Pyrolysis

Kyriakos Mouratis; Valentin Tudose; Cosmin Romanitan; Cristina Pachiu; Oana Tutunaru; Mirela Suchea; Stelios Couris; Dimitra Vernardou; Koudoumas Emmanouel

doi:10.3390/ma13173859

Electrochromic Performance of V₂O₅ Thin Films Grown by Spray Pyrolysis

Materials (Basel). 2020 Sep 1;13(17):3859. doi: 10.3390/ma13173859.

Authors

Kyriakos Mouratis^{1

2}, Valentin Tudose^{1

3}, Cosmin Romanitan⁴, Cristina Pachiu⁴, Oana Tutunaru⁴, Mirela Suchea^{1

4}, Stelios Couris², Dimitra Vernardou^{1

5}, Koudoumas Emmanouel^{1

5}

Affiliations

¹ Center of Materials Technology and Photonics, School of Engineering, Hellenic Mediterranean University, 71410 Heraklion, Greece.
² Department of Physics, University of Patras, 26500 Patras, Greece.
³ Department of Chemistry, University of Crete, 70013 Heraklion, Greece.
⁴ National Institute for Research and Development in Microtechnologies-IMT Bucharest, 126A, Erou Iancu 8 Nicolae Street, 077190 Bucharest, Romania.
⁵ Department of Electrical and Computer Engineering, School of Engineering, Hellenic Mediterranean University, 71410 Heraklion, Greece.

Abstract

A new approach regarding the development of nanostructured V₂O₅ electrochromic thin films at low temperature (250 °C), using air-carrier spray deposition and ammonium metavanadate in water as precursor is presented. The obtained V₂O₅ films were characterized by X-ray diffraction, scanning electron microscopy and Raman spectroscopy, while their electrochromic response was studied using UV-vis absorption spectroscopy and cyclic voltammetry. The study showed that this simple, cost effective, suitable for large area deposition method can lead to V₂O₅ films with large active surface for electrochromic applications.

Keywords: ammonium metavanadate; electrochromic; spray pyrolysis; vanadium pentoxide.

Publication types

Letter