title: Synthesis and optical characterization of silicon nanoparticles.
abstract: Various reaction conditions, such as quantity of reducing agent and reaction time were investigated with the aim of finding a simple, optimized synthetic route for the synthesis of luminescent silicon nanoparticles (SiNPs). Si NPs were synthesized from the reaction of ethylenediammonium chloride and magnesium silicide via a low temperature solution route. Optical characterizations of silicon nanoparticles were achieved by using ultraviolet-visible (UV-Vis) and photoluminescence (PL) spectroscopy. As the reaction time longer, silicon nanoparticles grew and their emission wavelength shifted to the longer wavelength. The monotonic shift of the photoluminescence as a function of excitation wavelength resulted in the excitation of different sizes of nanocrystals that had different optical transition energies.
authors: Department of Chemistry, Chosun University, Gwangju 501-759, Korea.
authors: Bomin
authors: B
authors: Cho
authors: Sung-Gi
authors: SG
authors: Lee
authors: Hee-Gweon
authors: HG
authors: Woo
authors: Honglae
authors: H
authors: Sohn
mesh_terms: D008163:Luminescent Measurements / Q000379:methods*; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D012031:Refractometry; D012825:Silicon / Q000737:chemistry*; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
chemical_list: C009495:titanium dioxide; D014025:Titanium; D012825:Silicon