Electrodeposition and characterization of hematite films obtained from DMSO solution

G. Riveros, D. Ramírez, E.A. Dalchiele, R. Marotti, L.M. Peter, P. Grez, F. Martín, J.R. Ramos-Barrado

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Abstract

The present study shows the results obtained in the electrodeposition of hematite thin films from DMSO solution employing FeCl and molecular oxygen as precursors. The films were obtained through a potential cycling program at different cathodic limits and at different electrolytic bath temperatures. In all cases, as-grown films were amorphous and photoelectrochemically inactive. An annealing procedure is necessary to completely transform the electrodeposited iron oxide to α-Fe2O3 phase. XRD analyses confirm the presence of diffraction peaks corresponding to hematite after annealing, showing a strong preferential orientation of the [110] axis vertical to the substrate. Different techniques (XRD techniques, XPS analyses, SEM images, UV-Vis spectroscopy, Mott-Schottky plots and photocurrent-potential curves) have been employed in order to characterize the films and determinate their properties according with the conditions of electrodeposition and the annealing temperature.

Original languageEnglish
Pages (from-to)97-116
Number of pages20
JournalECS Transactions
Volume58
Issue number11
DOIs
Publication statusPublished - 2013

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    Riveros, G., Ramírez, D., Dalchiele, E. A., Marotti, R., Peter, L. M., Grez, P., Martín, F., & Ramos-Barrado, J. R. (2013). Electrodeposition and characterization of hematite films obtained from DMSO solution. ECS Transactions , 58(11), 97-116. https://doi.org/10.1149/05811.0097ecst