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2011 | 120 | 2 | 298-302
Article title

Samarium-Doped Ceria Nanostructured Thin Films Grown on FTO Glass by Electrodepostion

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EN
Abstracts
EN
Electrical, optical or catalytic properties of ceria can be tuned via doping by rare earth elements. The innate properties of ceria-based materials can be further amplified by using nanostructured ceria. In this study, Sm-doped ceria (SDC) coatings were grown on the FTO glass substrate by means of cathodic deposition. Films were obtained from mixed Sm^{3+}/Ce^{3+} aqueous nitrate solutions, applying -0.8V/(SCE) potential for 1 h. Selected conditions gave rise to adherent, homogeneous and well-covering nanostructured SDC thin films. EDX analysis showed that 0.8 and 1.5 mol% Sm^{3+} led to 3.4 and 6.3 at.% Sm in the SDC films. XRD and Raman analysis confirmed the formation of cubic fluorite-type CeO_{2}. However, Sm-doping decreased the crystallite size of nanostructured ceria. The effect of annealing on SDC film was also studied. An improvement in crystallite quality was found with increasing temperature. Optical absorption properties were studied and the band gap value (E_g) of 3.07 eV was determined for pure ceria. Sm-doped ceria exhibited a red shifting. The E_g values were 2.97 and 2.81 eV, in due order.
Keywords
Contributors
  • Laboratorie d' Electrochimie, Chimie des Interfaces et Modélisation pour l'Énergie, LECIME, CNRS UMR 7575-ENSCP-Paris, 11 rue Pierre et Marie Curie, 75231 Paris cedex 05, France
  • The Vinča Institute of Nuclear Sciences, University of Belgrade, PO BOX 522, 11 001, Belgrade, Serbia
author
  • Laboratorie d' Electrochimie, Chimie des Interfaces et Modélisation pour l'Énergie, LECIME, CNRS UMR 7575-ENSCP-Paris, 11 rue Pierre et Marie Curie, 75231 Paris cedex 05, France
author
  • Laboratorie d' Electrochimie, Chimie des Interfaces et Modélisation pour l'Énergie, LECIME, CNRS UMR 7575-ENSCP-Paris, 11 rue Pierre et Marie Curie, 75231 Paris cedex 05, France
  • Department of Microelectronics and Semiconductor Devices, Technical University of Moldova, 168 Stefan cel Mare Blvd., Chisinau, MD-2004, Republic of Moldova
author
  • Laboratorie d' Electrochimie, Chimie des Interfaces et Modélisation pour l'Énergie, LECIME, CNRS UMR 7575-ENSCP-Paris, 11 rue Pierre et Marie Curie, 75231 Paris cedex 05, France
author
  • Laboratorie d' Electrochimie, Chimie des Interfaces et Modélisation pour l'Énergie, LECIME, CNRS UMR 7575-ENSCP-Paris, 11 rue Pierre et Marie Curie, 75231 Paris cedex 05, France
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bwmeta1.element.bwnjournal-article-appv120n219kz
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