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Published March 9, 2005 | Supplemental Material
Journal Article Open

Synthesis of Blue Luminescent Si Nanoparticles Using Atmospheric-Pressure Microdischarges


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.

Additional Information

© 2005 American Chemical Society. Received December 1, 2004; Revised Manuscript Received January 23, 2005. The authors are grateful to Julie Biteen for assistance with the PL lifetime measurements and to the Tirrell group for the use of their fluorescence spectrometer. This article was based on work supported by NSF (CTS-0404353).

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Supplemental Material - nl0480060si20041201_112408.pdf


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