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Visible Luminescence from Porous Silicon and Siloxene: Recent Results

Published online by Cambridge University Press:  28 February 2011

H. D. Fuchs ,
M. Rosenbauer ,
M. S. Brandt ,
S. Ernst ,
S. Finkbeiner ,
M. Stutzmann ,
K. Syassen ,
J. Weber ,
H. J. Queisser  and
M. Cardona
H. D. Fuchs
Affiliation:
Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, D-7000 Stuttgart, Germany
M. Rosenbauer
Affiliation:
Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, D-7000 Stuttgart, Germany
M. S. Brandt
Affiliation:
Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, D-7000 Stuttgart, Germany
S. Ernst
Affiliation:
Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, D-7000 Stuttgart, Germany
S. Finkbeiner
Affiliation:
Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, D-7000 Stuttgart, Germany
M. Stutzmann
Affiliation:
Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, D-7000 Stuttgart, Germany
K. Syassen
Affiliation:
Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, D-7000 Stuttgart, Germany
J. Weber
Affiliation:
Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, D-7000 Stuttgart, Germany
H. J. Queisser
Affiliation:
Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, D-7000 Stuttgart, Germany
M. Cardona
Affiliation:
Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, D-7000 Stuttgart, Germany
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Abstract

The optical properties of porous Si (p-Si) are compared to those of siloxene and its derivatives in order to gain more insight into the mechanism of the luminescence observed in p-Si. We report new results of photoluminescence (PL), photoluminescence excitation (PLE), time-dependent and pressure-dependent photoluminescence, and optically detected magnetic resonance (ODMR). Important information about the structural, electronic, and microscopic nature of the two classes of materials are deduced from these experiments. Annealed siloxene and p-Si show very similar properties, suggesting that siloxene-related structures, e.g. electrically isolated Si6-rings, might be responsible for the luminescence in p-Si. The Si-planes in as-prepared siloxene, with their green luminescence, are metastable and are readily oxidized into red-luminescent siloxene configurations.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 283: Symposium F – Microcrystalline Semiconductors–Materials Science and Devices , 1992 , 203
Copyright
Copyright © Materials Research Society 1993

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References

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