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 language | English |
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Pages (from-to) | 97-116 |
Number of pages | 20 |
Journal | ECS Transactions |
Volume | 58 |
Issue number | 11 |
DOIs | |
Publication status | Published - 2013 |