——Nano Lett. 2012, 12, 113–118
First-principles studies of the hydrogenation effects in silicene sheets
——P. Zhang et al. / Physics Letters A 376 (2012) 1230–1233
——PHYSICAL REVIEW B 80, 155453 2009
Structures and electronic properties of silicene clusters: a promising material for FET and hydrogen storage
——Phys. Chem. Chem. Phys., 2011, 13, 7304–7311
First-Principles Study of Ferromagnetism in Two- Dimensional Silicene with Hydrogenation
——J. Phys. Chem. C 2012, 116, 4163−4166
Tunable Bandgap in Silicene and Germanene
Graphene based core/shell quantum dots
——Appl. Phys. Lett. 99, 183102 (2011)
Meanings and applications
The electronic structures and hence properties and functionalities of Graphene-based quantum dots (GQDs) can be tailored by size and shape, the potential applications including spin qubits, single electron transistors, photovoltaics, and light-emitting diodes. Analogous to graphanes, silicanes are predicted to be interesting materials for hydrogen storage and for their band engineering properties.
A review on silicene — New candidate for electronics
——A. Kara et al. / Surface Science Reports 67 (2012) 1–18
It was shown that the self-aligned silicene nanoribbons deposited on Ag(110) substrate have honeycomb, graphene-like buckled structure. Another clear evidence of the buckling has been identified in silicene epitaxially grown on a close-packed silver surface Ag in (111) plane. There it was found a highly ordered silicon structure, arranged within a honeycomb lattice, consisting of two silicon sublattices occupying positions at different heights. The value of the sublattices displacement has been determined and is equal to 0.2 Å .
Even before the synthesis of isolated graphene, ab initio studies based on the minimization of the total energy has revealed that a buckled honeycomb st.
Silicene: Compelling Experimental Evidence for Graphenelike TwoDimensional Silicon
——PRL 108, 155501 (2012)
Silicene – the silicon-based counterpart of graphene – has a two dimensional structure that is responsible for the variety of potentially useful chemical and physical properties. The existence of silicene has been achieved recently owing to experiments involving epitaxial growth of silicon as stripes on Ag(001), ribbons on Ag(110), and sheets on Ag(111). Though the number of independent experimental investigations on silicene is limited, there is a clear indication that silicon may form a ‘‘quasi-2D’’ structure resembling that of graphene.
Combination of graphene and quantum dots
Hydrogenation of graphene to form graphane, changes the hybridization of carbon atoms from sp2 to sp3, and from a semimetal (bandgap = 0) to an insulator (DFT : bandgap = 3.9 eV). By embedding graphene islands into graphane matrix, the graphene-based quantum dots (GQDs) exhibit unique properties in connection with quantum confinement effects.
Two- and One-Dimensional Honeycomb Structures of Silicon and Germanium
——PRL 102, 236804 (2009)
Monolayer honeycomb structures of group-IV elements and IIIV binary compounds: First-principles calculations
Experimental Literatures
Silicene, the graphene equivalent for silicon, opening new perspectives for applications, especially due to its compatibility with Si-based electronics. Here we provide compelling evidence, from both structural and electronic properties, for the synthesis of epitaxial silicene sheets on a silver (111) substrate, through the combination of scanning tunneling microscopy and angular-resolved photoemission spectroscopy.
A Stable “Flat″ Form of Two-Dimensional Crystals: Could Graphene, Silicene, Germanene Be Minigap Semiconductors
——Nano Lett. 2012, 12, 1045−1052
Theoretical calculations
Silicene & Germanene
The modeled silicene and germanene, bandgap energy = 0 eV
Silicene @ H
Bandgap energy = 2.165 eV