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Study of Growth and Characterization of Fe-Catalyzed β-Ga2O3 Nanowires

Published online by Cambridge University Press:  18 May 2015

Sudheer Kumar ,
C. Tessarek ,
A. Hähnel ,
S. Christiansen  and
R. Singh
Sudheer Kumar
Affiliation:
Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110016, India
C. Tessarek
Affiliation:
Max Planck Institute for the Science of Light, Günther-Scharowsky-Straβe 1, 91058 Erlangen, Germany
A. Hähnel
Affiliation:
Max Planck Institute of Micro structure Physics, Weinberg 2, D-06120 Halle, Germany
S. Christiansen
Affiliation:
Max Planck Institute for the Science of Light, Günther-Scharowsky-Straβe 1, 91058 Erlangen, Germany Helmholtz Centre Berlin for Materials and Energy, Hahn-Meitner Platz 1, 14109 Berlin, Germany
R. Singh
Affiliation:
Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110016, India
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Abstract

In the present study, Fe as a catalyst was used to grow single crystalline monoclinic gallium oxide (β-Ga2O3) nanowires using chemical-vapor-deposition method. The morphology, structure and luminescence properties of the as-grown β-Ga2O3 nanowires were investigated using various characterization techniques. The diameter of the as-grown nanowires was in the range of 50 to 100 nm, and the lengths up to tens of micrometers. The structural investigation of the nanowires was carried out using X-ray diffraction that showed monoclinic phase of Ga2O3. Further, the transmission electron microscope (TEM) investigations along with selected area diffraction pattern revealing single crystalline nature of the nanowires. The as-grown β-Ga2O3 nanowires had preferred orientation along [1-1-1] direction. The high resolution TEM image showed regular arrangement of atoms and the lattice spacing between (1-1-1) planes was around 0.266 nm. The luminescence properties of the as-grown nanowires were measured using cathodoluminescence (CL) spectroscopy. The CL measurements of β-Ga2O3 nanowires revealed a strong broad UV-blue emission band and a weak red emission band.

Keywords

chemical vapor deposition (CVD) (deposition)crystallinenanostructure
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1751: Symposium LL – Semiconductor Nanowires—Growth, Physics, Devices and Applications , 2015 , mrsf14-1751-ll13-32
Copyright
Copyright © Materials Research Society 2015 

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References

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