Author
Listed:
- MARILENA CARBONE
(Department of Chemical Sciences and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica 100133 Rome, Italy)
Abstract
The adsorption of small organic molecules on silicon surfaces has been long a subject of investigations, as it provides the fundamental basis of silicon-based technologies in many fields. Several approaches were used, both theoretical and experimental, on many types of adsorbate-substrate systems aiming at determining preferential sites and geometries of adsorption, stable configurations, transition barriers, adsorption mechanisms, electronic structures among others. The research efforts, though, did not always bring to conclusive arguments and on some systems investigations are still going on following the evolution of the experimental techniques and computational methods. In this review, two case studies are reported: benzene and methanol on Si(100)2×1, i.e. examples of a molecular and a dissociative adsorption. The adsorption of benzene on Si(100)2×1 is still an open case, as it may adsorb in di-σ or tetra-σ bonded configurations, but contrasting evidences have been reported so far, on which of the two is the most stable one and the debate is still open. The adsorption of methanol is less controversial and it is widely accepted it is dissociative with breakage of the O–H at low coverages. But also in this case, investigations are going on to elucidate the adsorption mechanism.
Suggested Citation
Marilena Carbone, 2017.
"Small Molecules Adsorbed On Silicon Surfaces: Two Cases Through Time,"
Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 24(06), pages 1-14, August.
Handle:
RePEc:wsi:srlxxx:v:24:y:2017:i:06:n:s0218625x18300010
DOI: 10.1142/S0218625X18300010
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