Skip to main content Accessibility help
×
Home

ARC Discharge for the Synthesis of Monoclinic Ga2O3 Nanowires

  • Young Chul Choi (a1), Dong Jae Bae (a1), Seung Mi Lee (a1), Young Soo Park (a1), Young Hee Lee (a2), Gyeong-Su Park (a3), Won Bong Choi (a4), Nae Sung Lee (a4) and Jong Min Kim (a4)...

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.

Copyright

References

Hide All
1. Morales, A. M. and Lieber, C. M., Science 279, 208 (1998).
2. Zhu, J. and Fan, S., J. Mater. Res. 14, 1175 (1999)
3. Lee, S. T., Wang, N., Zhang, Y. F., and Tang, Y. H., MRS Bulletin 24, 36 (1999).
4. Choi, Y. C. and Lee, Y. H., unpublished.
5. Bonard, J.-M., Stora, T., Salvetat, J.-P., Maier, F., Stockli, T., Daschl, C., Forro, L., Heer, W. A. de, and Chatelain, A., Adv. Mater. 9, 827 (1997).
6.JCPDS card no. 43–1012.
7. Zhang, H. Z., Kong, Y. C., Wang, Y. Z., Du, X., Bai, Z. G., Wang, J. J., Yu, D. P., Ding, Y., Hang, Q. L., Feng, S. Q., Solid State Commun. 109, 677 (1999).
8. Qin, L. C., Zhou, D., Krauss, A. R., and Gruen, D. M., Appl. Phys. Lett. 72, 3437 (1998).
9.HSC Chemistry ver. 3.0.
10.We used CASTEP code, a registered software product of Molecular Simulations Inc.
11. Troullier, N. and Martins, J. L., Phys. Rev. B 43, 1993 (1991).
12. Kleinman, L. and Bylander, D. M., Phys. Rev. Lett. 48, 1425 (1982).
13. Perdew, J. P. and Zunger, A., Phys. Rev. B 23, 5048 (1981).
14. Monkhorst, H. J. and Pack, J. D., Phys. Rev. B 13, 5188 (1976).
15. Kim, H.-G. and Kim, W.-T., J. Appl. Phys. 62, 2000 (1987).

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed