478 citations · 2.1k across the 25 of their papers we have counts for
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Adsorption of Group-IV Elements on Graphene, Silicene, Germanene, Stanene: Dumbbell Formation
V. Ongun Özçelik, D. Kecik, E. Durgun +1
Silicene and germanene derivatives constructed from periodic dumbbell units play a crucial role in multilayers of these honeycomb structures. Using first-principles calculations ba…
Dissociative Adsorption of Molecules on Graphene and Silicene
H. Hakan Gurel, V. Ongun Ozcelik, S. Ciraci
We study the interaction of H, O, CO, HO and OH molecules with the vacancy defects of graphene and silicene. Atoms around the bare vacancy reconstruct and specific chem…
Silicite: the layered allotrope of silicon
Seymur Cahangirov, V. Ongun Ozcelik, Angel Rubio +1
Based on first-principles calculation we predict two new thermodynamically stable layered-phases of silicon, named as silicites, which exhibit strong directionality in the electron…
New Phases of Germanene
V. Ongun Özçelik, E. Durgun, S. Ciraci
Germanene, a graphene like single layer structure of Ge, has been shown to be stable and recently grown on Pt and Au substrates. We show that a Ge adatom adsorbed to germanene push…
The atomic structure of the phase of silicene on Ag(111)
Seymur Cahangirov, Veli Ongun Özçelik, Lede Xian +5
The growth of the reconstructed silicene on Ag substrate has been frequently observed in experiments while its atomic structure and formation mechanism i…
Stable single-layer honeycomb like structure of silica
V. Ongun Özçelik, S. Cahangirov, S. Ciraci
Silica or SiO, the main constituent of earth's rocks has several 3D complex crystalline and amorphous phases, but it does not have a graphite like layered structure in 3D. Our…