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By combining experimental techniques with ab initio density functional theory calculations, we describe the Si/Ag(111) 2D systems in terms of a sp2–sp3 form of silicon characterized by a vertically distorted honeycomb lattice provided by the constraint imposed by the substrate. The Raman spectrum reflects the multihybridized nature of the 2D Si nanosheets (NSs) resulting from a buckling-induced distortion of a purely sp2 hybridized structure. We show that vibrational and electronic properties of 2D Si-NSs are tightly linked to the buckling arrangement.
American Chemical Society
Publication date: 
15 Aug 2013

Eugenio Cinquanta, Emilio Scalise, Daniele Chiappe, Carlo Grazianetti, Bas van den Broek, Michel Houssa, Marco Fanciulli, Alessandro Molle

Biblio References: 
Volume: 117 Issue: 32 Pages: 16719-16724
The Journal of Physical Chemistry C