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Composition and Size Effects on the Optical Properties of Isolated Silicon-Germanium Nanowires

Published online by Cambridge University Press:  11 January 2012

Houssem Kallel
Affiliation:
Université Paul Sabatier, Université de Toulouse, 118 route de Narbonne, 31062 Toulouse cedex 9, France. CEMES-CNRS, 29 rue Jeanne Marvig, 31055 Toulouse Cedex 4, France. Département de Physique, Faculté des Sciences de Sfax, Université de Sfax, B.P. 1171, 3000 Sfax, Tunisie.
Abdallah Chehaidar
Affiliation:
Département de Physique, Faculté des Sciences de Sfax, Université de Sfax, B.P. 1171, 3000 Sfax, Tunisie.
Arnaud Arbouet
Affiliation:
Université Paul Sabatier, Université de Toulouse, 118 route de Narbonne, 31062 Toulouse cedex 9, France. CEMES-CNRS, 29 rue Jeanne Marvig, 31055 Toulouse Cedex 4, France.
Thierry Baron
Affiliation:
LTM, CNRS-CEA-LETI, 17 rue des Martyrs, 38054 Grenoble cedex 9, France.
Alexis Potié
Affiliation:
LTM, CNRS-CEA-LETI, 17 rue des Martyrs, 38054 Grenoble cedex 9, France.
Bassem Salem
Affiliation:
LTM, CNRS-CEA-LETI, 17 rue des Martyrs, 38054 Grenoble cedex 9, France.
Vincent Paillard
Affiliation:
Université Paul Sabatier, Université de Toulouse, 118 route de Narbonne, 31062 Toulouse cedex 9, France. CEMES-CNRS, 29 rue Jeanne Marvig, 31055 Toulouse Cedex 4, France.
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Abstract

Silicon and Germanium nanowires (NWs) have shown a strong ability to enhance both the absorption and scattering of light. Tailoring the optical properties of Si or Ge NWs can be obtained by adjusting the nanowire diameter. Another parameter that can be used is the chemical composition of silicon-germanium (Si1-xGex-NWs) alloys. In this work, we perform a numerical study on the optical properties of single Si1-xGex-NWs based on the Lorenz-Mie theory. The effects of Ge composition, light polarization and angle of incidence on the nanowire optical properties are investigated.

Type
Research Article
Copyright
Copyright © Materials Research Society 2012

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References

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