Electrodeposition and characterization of hematite films obtained from dmso solution

G. Riveros; D. Ramírez; E. A. Dalchiele; R. Marotti; P. Grez; F. Martín; J. R. Ramos-Barradod

doi:10.1149/2.098406jes

Electrodeposition and characterization of hematite films obtained from dmso solution

G. Riveros, D. Ramírez, E. A. Dalchiele, R. Marotti, P. Grez, F. Martín, J. R. Ramos-Barradod

INSTITUTE OF CHEMISTRY

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Abstract

The present study shows the results obtained in the electrodeposition of hematite thin films from DMSO solution employing FeCl3 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 the α-Fe₂O₃ phase. XRD analyzes 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, XPS, SEM, UV-Vis spectroscopy, Mott-Schottky plots and photocurrent-potential curves) have been employed in order to characterize the films and determine their properties as a function of the conditions of electrodeposition and the annealing temperature.

Original language	English
Pages (from-to)	D353-D361
Journal	Journal of the Electrochemical Society
Volume	161
Issue number	6
DOIs	https://doi.org/10.1149/2.098406jes
State	Published - 2014

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title = "Electrodeposition and characterization of hematite films obtained from dmso solution",

abstract = "The present study shows the results obtained in the electrodeposition of hematite thin films from DMSO solution employing FeCl3 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 the α-Fe2O3 phase. XRD analyzes 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, XPS, SEM, UV-Vis spectroscopy, Mott-Schottky plots and photocurrent-potential curves) have been employed in order to characterize the films and determine their properties as a function of the conditions of electrodeposition and the annealing temperature.",

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T1 - Electrodeposition and characterization of hematite films obtained from dmso solution

AU - Riveros, G.

AU - Ramírez, D.

AU - Dalchiele, E. A.

AU - Marotti, R.

AU - Grez, P.

AU - Martín, F.

AU - Ramos-Barradod, J. R.

PY - 2014

Y1 - 2014

N2 - The present study shows the results obtained in the electrodeposition of hematite thin films from DMSO solution employing FeCl3 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 the α-Fe2O3 phase. XRD analyzes 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, XPS, SEM, UV-Vis spectroscopy, Mott-Schottky plots and photocurrent-potential curves) have been employed in order to characterize the films and determine their properties as a function of the conditions of electrodeposition and the annealing temperature.

AB - The present study shows the results obtained in the electrodeposition of hematite thin films from DMSO solution employing FeCl3 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 the α-Fe2O3 phase. XRD analyzes 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, XPS, SEM, UV-Vis spectroscopy, Mott-Schottky plots and photocurrent-potential curves) have been employed in order to characterize the films and determine their properties as a function of the conditions of electrodeposition and the annealing temperature.

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JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

IS - 6

ER -

Electrodeposition and characterization of hematite films obtained from dmso solution

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