Lee, S. Cho, W.-J. Chin, C.S. Han, I.-K. 2024-01-21T05:37:10Z 2024-01-21T05:37:10Z 2021-09-02 2005-02 1013-9826 https://pubs.kist.re.kr/handle/201004/136805 Silicon nanocrystals in a range from 2 nm to 5 nm were prepared from Zintl salt, soldium silicide (NaSi) by sonochemical method. This synthesis permits that the reaction be completed in only a few hours and the easy alkyl-modification of nanocrystals surface at room temperature and ambient pressure. The average size of nanocrystals measured by the dynamic light scattering analysis was 2.7 nm. The high-resolution transmission electron micrograph confirmed the material identity of nanocrystals as crystalline silicon. FT-IR spectra are consistent with the surface states of nanocrystals that are chlorine-or butyl-capped. The emission peak center moved to a longer wavelength (up to 430 nm) with the reaction time, under a 325 nm excitation. English Trans Tech Publications Ltd Chemical modification Crystalline materials High resolution electron microscopy Photoluminescence Reaction kinetics Silicon Sonochemistry Dynamic light scattering Salts Thermal effects Silicon nanocrystals Soldium silicide (NaSi) Sonochemical synthesis Zintl salt Room temperature Surface states Nanostructured materials Nanocrystals Sonochemical synthesis of silicon nanocrystals Article 10.4028/0-87849-958-x.995 1 Key Engineering Materials, v.277-279, no.I, pp.995 - 999 Key Engineering Materials 277-279 I 995 999 scopus 2-s2.0-33646393250 Article Chemical modification Crystalline materials High resolution electron microscopy Photoluminescence Reaction kinetics Silicon Sonochemistry Dynamic light scattering Salts Thermal effects Silicon nanocrystals Soldium silicide (NaSi) Sonochemical synthesis Zintl salt Room temperature Surface states Nanostructured materials Nanocrystals Photoluminescence Silicon nanocrystals Sonochemistry