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Investigation of WO3 Electrodeposition Leading to Nanostructured Thin Films

Dipartimento di Fisica e Astronomia “Ettore Majorana”,Università di Catania, and CNR-IMM, via S. Sofia 64, 95123 Catania, Italy
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Nanomaterials 2020, 10(8), 1493; https://doi.org/10.3390/nano10081493
Received: 1 July 2020 / Revised: 23 July 2020 / Accepted: 27 July 2020 / Published: 30 July 2020
(This article belongs to the Section Synthesis, Interfaces and Nanostructures)
Nanostructured WO3 represents a promising material for electrochromic and sensing devices. In this scenario, electrodeposition is a promising low-cost approach for careful production. The electrodeposition of tungsten oxide film from a peroxo-tungstic-acid (PTA) solution is investigated. WO3 is synthetized onto Indium doped Tin Oxide (ITO) substrates, in a variety of shapes, from a fragmentary, thin layer up to a thick continuous film. Samples were investigated by scanning electron (SEM) and atomic force microscopy (AFM), Rutherford backscattering spectrometry (RBS), X-ray Diffraction analysis (XRD), energy gap measurement. Electrodeposition current curves are compared with characterization results to model the growth process. Early stages of electrodeposition are characterized by a transient cathodic current revealing an instantaneous nucleation followed by a diffusion limited process. A quantitative analysis of W deposition rate and current at working electrode validates a microscopic model for WO3 electrodeposition driving the process towards nanostructured versus continuous WO3 film. View Full-Text
Keywords: tungsten oxide; electrodeposition; nanograins; nucleation; growth model tungsten oxide; electrodeposition; nanograins; nucleation; growth model
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MDPI and ACS Style

Mineo, G.; Ruffino, F.; Mirabella, S.; Bruno, E. Investigation of WO3 Electrodeposition Leading to Nanostructured Thin Films. Nanomaterials 2020, 10, 1493. https://doi.org/10.3390/nano10081493

AMA Style

Mineo G, Ruffino F, Mirabella S, Bruno E. Investigation of WO3 Electrodeposition Leading to Nanostructured Thin Films. Nanomaterials. 2020; 10(8):1493. https://doi.org/10.3390/nano10081493

Chicago/Turabian Style

Mineo, G., F. Ruffino, S. Mirabella, and E. Bruno 2020. "Investigation of WO3 Electrodeposition Leading to Nanostructured Thin Films" Nanomaterials 10, no. 8: 1493. https://doi.org/10.3390/nano10081493

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