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VLS Synthesis and Characterization of SnO2 Nanowires

Published online by Cambridge University Press:  31 January 2012

Dulce N. Castillo ,
Tomás D. Becerril ,
Enrique R. Andrés ,
Héctor J. Santiesteban  and
Godofredo G. Salgado
Dulce N. Castillo
Affiliation:
Posgrado en Dispositivos Semiconductores, Benemérita Universidad Autónoma de Puebla, Av. 14 Sur y San Claudio s/n, Ciudad Universitaria, C.P.72570, Puebla, Pue., México.
Tomás D. Becerril
Affiliation:
Posgrado en Dispositivos Semiconductores, Benemérita Universidad Autónoma de Puebla, Av. 14 Sur y San Claudio s/n, Ciudad Universitaria, C.P.72570, Puebla, Pue., México.
Enrique R. Andrés
Affiliation:
Posgrado en Dispositivos Semiconductores, Benemérita Universidad Autónoma de Puebla, Av. 14 Sur y San Claudio s/n, Ciudad Universitaria, C.P.72570, Puebla, Pue., México.
Héctor J. Santiesteban
Affiliation:
Posgrado en Dispositivos Semiconductores, Benemérita Universidad Autónoma de Puebla, Av. 14 Sur y San Claudio s/n, Ciudad Universitaria, C.P.72570, Puebla, Pue., México.
Godofredo G. Salgado
Affiliation:
Posgrado en Dispositivos Semiconductores, Benemérita Universidad Autónoma de Puebla, Av. 14 Sur y San Claudio s/n, Ciudad Universitaria, C.P.72570, Puebla, Pue., México.
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Abstract

We have synthesized core-shell 1D nanostructures by the Vapor-Liquid-Solid (VLS) mechanism. Gold (Au) was used as a catalyst and tin oxide (SnO) powder as a precursor; the growth temperature was of 600 °C. These structures were characterized by XRD, SEM, TEM, EDS, and PL. The nanowires have an average diameter of 20 nm and their lengths are of tens of micrometers; the core is tin dioxide (SnO2) with the tetragonal rutile structure and it has an average diameter of 12 nm; the shell is amorphous Sn of 8 nm average thickness. Photoluminescence measurements show a broad band in the 400-800 nm range. On the same growth process, SnO2 nanoparticles and a mixture of SnO2 rods and wires were also obtained, at 400 °C and 800 °C, respectively.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1371: Symposium S1 – Nanostructured Materials and Nanotechnology , 2012 , imrc11-1371-s1-61
Copyright
Copyright © Materials Research Society 2012

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References

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