Silicon sheets by redox assisted chemical exfoliation

M.R. Tchalala , A. Ma , H. Enriquez , A. Kiara , A. Lachgar , S. Yagoubi , E. Foy , E. Vega , A. Bendounan , M.G. Silly , F. Sirotti , S. Nitsche (1) , D. Chaudanson (1) , H. Jamgotchian (1) , B. Aufray (1) , A.J. Mayne , Guillaume Dujardin , H. Oughaddou

1 CINaM - Centre Interdisciplinaire de Nanoscience de Marseille

In this paper, we report the direct chemical synthesis of silicon sheets in gram-scale quantities by chemical exfoliation of pre-processed calcium disilicide (CaSi2). We have used a combination of x-ray photoelectron spectroscopy, transmission electron microscopy and energy-dispersive x-ray spectroscopy to characterize the obtained silicon sheets. We found that the clean and crystalline silicon sheets show a two-dimensional hexagonal graphitic structure.

Domaines: Physique [physics]

M.R. Tchalala, A. Ma, H. Enriquez, A. Kiara, A. Lachgar, et al.. Silicon sheets by redox assisted chemical exfoliation. Journal of Physics: Condensed Matter, 2013, 25 (44), pp.442001. ⟨10.1088/0953-8984/25/44/442001⟩. ⟨hal-00919569⟩