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ARC Discharge for the Synthesis of Monoclinic Ga2O3 Nanowires

Published online by Cambridge University Press:  21 February 2011

Young Chul Choi ,
Dong Jae Bae ,
Seung Mi Lee ,
Young Soo Park ,
Young Hee Lee ,
Gyeong-Su Park ,
Won Bong Choi ,
Nae Sung Lee  and
Jong Min Kim
Young Chul Choi
Affiliation:
Department of Semiconductor Science and Technology, Jeonbuk National University, Jeonju 561-756, R. O., Korea
Dong Jae Bae
Affiliation:
Department of Semiconductor Science and Technology, Jeonbuk National University, Jeonju 561-756, R. O., Korea
Seung Mi Lee
Affiliation:
Department of Semiconductor Science and Technology, Jeonbuk National University, Jeonju 561-756, R. O., Korea
Young Soo Park
Affiliation:
Department of Semiconductor Science and Technology, Jeonbuk National University, Jeonju 561-756, R. O., Korea
Young Hee Lee
Affiliation:
Department of Semiconductor Science and Technology, Jeonbuk National University, Jeonju 561-756, R. O.Korea, leeyh@sprc2.chonbuk.ac.kr
Gyeong-Su Park
Affiliation:
Analytical Engineering Laboratory, Samsung Advanced Institute of Technology, Suwon 440-600, R. O., Korea
Won Bong Choi
Affiliation:
Display Laboratory, Samsung Advanced Institute of Technology, Suwon 440-600, R. O., Korea
Nae Sung Lee
Affiliation:
Display Laboratory, Samsung Advanced Institute of Technology, Suwon 440-600, R. O., Korea
Jong Min Kim
Affiliation:
Display Laboratory, Samsung Advanced Institute of Technology, Suwon 440-600, R. O., Korea
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Abstract

Monoclinic gallium oxide (β-Ga2O3) nanowires were catalytically synthesized by electric arc discharge of GaN powders mixed with a small amount (less than 5 %) of transition metals under a pressure of 500 Torr (80 %-Ar + 20 %-O2). Scanning electron microscope (SEM) and high-resolution transmission electron microscope (HRTEM) images showed that the average diameter of the wires were about 30 nm and their lengths were as long as up to one hundred micrometer, resulting in extremely large aspect ratio. Fourier diffractogram was indicative of single crystalline nature of the β-Ga2O3 wire. HRTEM image also showed β-Ga2O3 with twin defects at the center of the wire which might play as nucleation seeds. Both X-ray diffraction (XRD) patterns and FT-Raman spectra of the wires identified the observed nanowires as monoclinic crystalline gallium oxides.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 581: Symposium F – Nanophase & Nanocomposite Materials II , 1999 , 239
Copyright
Copyright © Materials Research Society 2000

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References

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