Journal of Solid State Electrochemistry

, Volume 12, Issue 1, pp 95–101

Characterisation of electroplated Bi2(Te1−xSex)3 alloys

  • S. Michel
  • S. Diliberto
  • N. Stein
  • B. Bolle
  • C. Boulanger
Original Paper

DOI: 10.1007/s10008-007-0362-9

Cite this article as:
Michel, S., Diliberto, S., Stein, N. et al. J Solid State Electrochem (2008) 12: 95. doi:10.1007/s10008-007-0362-9

Abstract

Composition modulated Bi2(Te1−xSex)3 thin films were prepared on stainless steel substrates by cathodic electrodeposition. The composition was dependent on the deposition conditions. It was possible to obtain, in the same electrolyte, films with either an excess or a deficiency of bismuth in relation to stoichiometric Bi2(Te0.9Se0.1)3 by changing the deposition potential or the applied current density. The excess of bismuth was reached at the highest cathodic conditions. The variation of the crystallographic axis and the morphology with a granular structure were correlated with the presence of the Bi enrichment in the ternary. The crystallographic texture of bismuth telluride films was studied according to the electrodeposition conditions. The films presented a fibre texture, and a main orientation {11.0} was observed. Electrical and thermoelectric properties of a Bi1.98Te2.67Se0.39 film were measured and showed an n-type behaviour.

Keywords

Electrochemical growth Bismuth compounds Semiconducting materials Ternary bismuth telluride alloys Crystallographic texture 

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • S. Michel
    • 1
  • S. Diliberto
    • 1
  • N. Stein
    • 1
  • B. Bolle
    • 2
  • C. Boulanger
    • 1
  1. 1.Laboratoire d’Electrochimie des Matériaux-UMR CNRS 7555Université Paul Verlaine-MetzMetz cedex 03France
  2. 2.Laboratoire d’Etude des Textures et Applications aux Matériaux, UMR CNRS 7078Université Paul Verlaine-MetzMetzFrance

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