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Etude expérimentale et théorique des mécanismes d'adsorption/désorption de l'antimoine sur une surface de silicium (111)

Abstract : Owing to its technological properties due to both its Si dopant effects and its use as surfactant there is a wide interest in the study of adsorption properties of Sb on Silicon surfaces. The work reported in this document corresponds to a theoretical and experimental study of the adsorption properties of Sb/Si(111).
From an experimental viewpoint, a coupled study by Mass Spectrometry, Electron Diffraction and Scanning Tunnel Microscopy enables us to describe the structural, kinetics and thermodynamics properties of the Sb/Si(111) system. From a theoretical viewpoint, ab-initio methods have been used to study the evolution of the nature of the adsorption site with the deposited amount of Sb.
We thus are able to propose a scenario in which the Sb adsorption site evolves from a ternary position (at weak coverage) towards an on-top position (at the layer completion) and in which the nature of the Sb-Sb effective interaction changes from repulsive (theory) or vanishing (experiment) to attractive (theory and experiment). This site transition allows us to reconcile our kinetic and thermodynamical results.
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https://tel.archives-ouvertes.fr/tel-00010751
Contributor : Hazar Guesmi <>
Submitted on : Wednesday, November 2, 2005 - 10:51:14 AM
Last modification on : Thursday, January 18, 2018 - 1:38:27 AM
Long-term archiving on: : Friday, April 2, 2010 - 10:49:15 PM

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Hazar Guesmi. Etude expérimentale et théorique des mécanismes d'adsorption/désorption de l'antimoine sur une surface de silicium (111). Matière Condensée [cond-mat]. Université de droit, d'économie et des sciences - Aix-Marseille III, 2005. Français. ⟨tel-00010751⟩

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