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Single Particle and Ensemble Spectroscopy of Silicon Nanoparticles

Published online by Cambridge University Press:  17 March 2011

Lindsay E. Pell ,
Zhonghua Yu ,
Douglas S. English ,
Don O'Connor ,
Paul F. Barbara  and
Brian A. Korgel
Lindsay E. Pell
Affiliation:
Department of Chemical Engineering and Texas Materials Institute Center for Nano-and-Molecular Science and Technology, University of Texas at Austin, Austin, TX 78712, USA, Telephone: (+1)512-471-5633; Fax: (+1)512-471-7060
Zhonghua Yu
Affiliation:
Department of Chemical Engineering and Texas Materials Institute Center for Nano-and-Molecular Science and Technology, University of Texas at Austin, Austin, TX 78712, USA, Telephone: (+1)512-471-5633; Fax: (+1)512-471-7060
Douglas S. English
Affiliation:
Department of Chemical Engineering and Texas Materials Institute Center for Nano-and-Molecular Science and Technology, University of Texas at Austin, Austin, TX 78712, USA, Telephone: (+1)512-471-5633; Fax: (+1)512-471-7060
Don O'Connor
Affiliation:
Department of Chemical Engineering and Texas Materials Institute Center for Nano-and-Molecular Science and Technology, University of Texas at Austin, Austin, TX 78712, USA, Telephone: (+1)512-471-5633; Fax: (+1)512-471-7060
Paul F. Barbara
Affiliation:
Department of Chemical Engineering and Texas Materials Institute Center for Nano-and-Molecular Science and Technology, University of Texas at Austin, Austin, TX 78712, USA, Telephone: (+1)512-471-5633; Fax: (+1)512-471-7060
Brian A. Korgel
Affiliation:
Department of Chemical Engineering and Texas Materials Institute Center for Nano-and-Molecular Science and Technology, University of Texas at Austin, Austin, TX 78712, USA, Telephone: (+1)512-471-5633; Fax: (+1)512-471-7060
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Abstract

Octanethiol-stabilized Si nanocrystals, ranging from 2 to 8 nm in diameter, were synthesized in cyclohexane heated and pressurized above its critical point at temperatures ranging from 400°C to 500°C. The nanocrystals exhibit crystalline cores and photoluminesce with relatively high efficiencies. These nanocrystals are suitable for single particle spectroscopic measurements that reveal optical information about the individual chromophores that are buried in ensemble measurements. The sterically-stabilized Si nanocrystals emit with relatively narrow emission spectra at room temperature, characteristic of molecules.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 704: Symposium W – Nanoparticulate Materials , 2001 , W3.4.1
Copyright
Copyright © Materials Research Society 2002

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