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Preparation of Small Silicon Carbide Quantum Dots by Wet Chemical Etching

Published online by Cambridge University Press:  08 January 2013

D. Beke ,
Zs. Szekrényes ,
I. Balogh ,
M. Veres ,
É Fazakas ,
L. K. Varga ,
Zs. Czigány ,
K. Kamarás  and
A. Gali
D. Beke
Affiliation:
Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, Konkoly-Thege M. út 29-33., H-1121 Budapest, Hungary Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary
Zs. Szekrényes
Affiliation:
Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, Konkoly-Thege M. út 29-33., H-1121 Budapest, Hungary
I. Balogh
Affiliation:
Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, Konkoly-Thege M. út 29-33., H-1121 Budapest, Hungary
M. Veres
Affiliation:
Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, Konkoly-Thege M. út 29-33., H-1121 Budapest, Hungary
É Fazakas
Affiliation:
Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, Konkoly-Thege M. út 29-33., H-1121 Budapest, Hungary
L. K. Varga
Affiliation:
Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, Konkoly-Thege M. út 29-33., H-1121 Budapest, Hungary
Zs. Czigány
Affiliation:
Institute for Technical Physics and Materials Science, Research Centre of Natural Sciences, Hungarian Academy of Sciences, Konkoly-Thege M. út 29-33., H-1121 Budapest, Hungary
K. Kamarás
Affiliation:
Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, Konkoly-Thege M. út 29-33., H-1121 Budapest, Hungary
A. Gali
Affiliation:
Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, Konkoly-Thege M. út 29-33., H-1121 Budapest, Hungary Department of Atomic Physics, Budapest University of Technology and Economics, Budafoki út 8., H-1111 Budapest, Hungary
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Abstract

Luminescence nanocrystals or quantum dots give grate potential for bio-analysis as well as optoelectronics. Here we report an effective and non-expensive fabrication method of silicon carbide nanocrystals, with diameter below 10 nm, based on electroless wet chemical etching. Our samples show strong violet-blue emission in the 410-450 nm region depending on the used solvents and particle size. Raman and infrared measurements suggest the varied nature of surfaces of silicon carbide nanocrystals which elucidate the behavior of the silicon carbide colloid solvents and also give opportunity to modify the surface easily for specific biological, medical or other application.

Keywords

luminescencenanoscalesurface chemistry
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1468: Symposium VV – Nanomedicine for Molecular Imaging and Therapy , 2012 , mrss12-1468-vv05-14
Copyright
Copyright © Materials Research Society 2012

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References

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