Silicon nanoparticles synthesis from calcium disilicide by redox assisted chemical exfoliation

Mohamed Rachid Tchalala (1, 2) , Abdelkader Kara (3) , Abdessadek Lachgar (4) , Saïd Yagoubi (5) , Eddy Foy (6, 7) , Enrique Vega (6, 7) , Serge Nitsche (8) , Damien Chaudanson (8) , Bernard Aufray (8) , Larbi El Firdoussi (2) , Mustapha Ait Ali (2) , Hamid Oughaddou (1, 9)

1 ISMO - Institut des Sciences Moléculaires d'Orsay
2 Département de Chimie (Marrakech, Morocco)
3 UCF - University of Central Florida [Orlando]
4 Wake Forest University
5 LEEL - UMR 3685 - Laboratoire d'Etudes des Eléments Légers
6 LAPA - UMR 3685 - Laboratoire Archéomatériaux et Prévision de l'Altération
7 IRAMAT - LMC - IRAMAT - Laboratoire Métallurgies et Cultures
8 CINaM - Centre Interdisciplinaire de Nanoscience de Marseille
9 UCP - Université de Cergy Pontoise

We report the preparation of single-crystal silicon nanoparticles with 15 to 22 nm diameter from calcium disilicide (CaSi2) by redox assisted chemical exfoliation using solution phase synthesis route. Silicon nanoparticles are found to be highly oriented with a predominant size of 18 nm. X-Ray diffraction, as well as transmission electron microscopy studies, confirm that the silicon nanoparticles are a diamond type and highly crystalline.

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Mohamed Rachid Tchalala, Abdelkader Kara, Abdessadek Lachgar, Saïd Yagoubi, Eddy Foy, et al.. Silicon nanoparticles synthesis from calcium disilicide by redox assisted chemical exfoliation. Materials Today Communications, 2018, 16, pp.281-284. ⟨10.1016/j.mtcomm.2018.06.012⟩. ⟨hal-01958582⟩