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Synthesis of Blue Luminescent Si Nanoparticles Using Atmospheric-Pressure Microdischarges

Sankaran, R. Mohan and Holunga, Dean M. and Flagan, Richard C. and Giapis, Konstantinos P. (2005) Synthesis of Blue Luminescent Si Nanoparticles Using Atmospheric-Pressure Microdischarges. Nano Letters, 5 (3). pp. 537-541. ISSN 1530-6984. doi:10.1021/nl0480060.

[img] PDF (TEM image of silicon nanoparticles deposited from aerosol onto a carbon-coated copper grid and spectral characterization of np-Si film deposited on Mo substrate) - Supplemental Material
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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.

Item Type:Article
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URLURL TypeDescription Information
Flagan, Richard C.0000-0001-5690-770X
Giapis, Konstantinos P.0000-0002-7393-298X
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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Record Number:CaltechAUTHORS:20150818-102900813
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Official Citation:Synthesis of Blue Luminescent Si Nanoparticles Using Atmospheric-Pressure Microdischarges R. Mohan Sankaran, Dean Holunga, Richard C. Flagan, and Konstantinos P. Giapis Nano Letters 2005 5 (3), 537-541 DOI: 10.1021/nl0480060
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:59709
Deposited By: Irina Meininger
Deposited On:19 Aug 2015 23:49
Last Modified:10 Nov 2021 22:24

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