title: Synthesis of blue luminescent si nanoparticles using atmospheric-pressure microdischarges.
abstract: Silicon nanoparticles are synthesized from a mixture of argon/silane in a continuous flow atmospheric-pressure microdischarge reactor. Particles nucleate and grow to a few nanometers (1-3 nm) in diameter before their growth is abruptly terminated in the short residence time microreactor. Narrow size distributions are obtained as inferred from size classification and imaging. As-grown Si nanoparticles collected in solution exhibit room-temperature photoluminescence that peaks at 420 nm with a quantum efficiency of 30%; the emission is stable for months in ambient air.
authors.affiliation: Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA.
authors.forename: R Mohan
authors.initials: RM
authors.lastname: Sankaran
authors.forename: Dean
authors.initials: D
authors.lastname: Holunga
authors.forename: Richard C
authors.initials: RC
authors.lastname: Flagan
authors.forename: Konstantinos P
authors.initials: KP
authors.lastname: Giapis
mesh_terms: D003116:Color; D003460:Crystallization / Q000379:methods*; D004563:Electrochemistry / Q000379:methods*; D008027:Light; D049408:Luminescent Agents / Q000032:analysis / Q000737:chemistry* / Q000528:radiation effects; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D011312:Pressure; D012825:Silicon / Q000032:analysis / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D049408:Luminescent Agents; D012825:Silicon