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Photoluminescence from Single Porous Silicon Chromophores

Published online by Cambridge University Press:  09 August 2011

M. D. Mason ,
G. M. Credo ,
K. D. Weston  and
S. K. Buratto
M. D. Mason
Affiliation:
Department of Chemistry, University of California, Santa Barbara, CA 93106-9510, burattoC@chem.ucsb.edu
G. M. Credo
Affiliation:
Department of Chemistry, University of California, Santa Barbara, CA 93106-9510, burattoC@chem.ucsb.edu
K. D. Weston
Affiliation:
Department of Chemistry, University of California, Santa Barbara, CA 93106-9510, burattoC@chem.ucsb.edu
S. K. Buratto
Affiliation:
Department of Chemistry, University of California, Santa Barbara, CA 93106-9510, burattoC@chem.ucsb.edu
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Abstract

We spatially isolate and detect the luminescence from individual porous Si nanoparticles at room temperature. Our experiments show a variety of phenomena not previously observed in the emission from porous Si including a distribution of emission wavelengths, resolved vibronic structure, random spectral wandering, luminescence intermittency and irreversible photobleaching. Our results indicate that the emission from porous Si nanoparticles originates from excitons in quantum confined Si, strongly influenced by the surface passivating layer of the Si nanocrystal.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 536: Symposium F – Microcrystalline & Nanocrystalline Semiconductors - 1998 , 1998 , 27
Copyright
Copyright © Materials Research Society 1999

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