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Synthesis of blue luminescent si nanoparticles using atmospheric-pressure microdischarges.

Authors
  • Sankaran, R Mohan
  • Holunga, Dean
  • Flagan, Richard C
  • Giapis, Konstantinos P
Type
Published Article
Journal
Nano letters
Publication Date
Mar 01, 2005
Volume
5
Issue
3
Pages
537–541
Identifiers
PMID: 15755110
Source
Medline
License
Unknown

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.

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