| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Growth of Pure Zinc Blende GaAs Nanowires: Effect of Size and Density of Au Nanoparticles |
YE Xian, HUANG Hui, REN Xiao-Min, YANG Yi-Su, GUO Jing-Wei, HUANG Yong-Qing, WANG Qi |
| Key Laboratory of Information Photonics and OpticalCommunication (MOE), Beijing University of Posts and Telecommunications,Beijing 100876 |
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| Cite this article: |
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YE Xian, HUANG Hui, REN Xiao-Min et al 2010 Chin. Phys. Lett. 27 046101 |
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Abstract Pure zinc blende GaAs nanowires were grown by metal organic chemical vapor deposition on GaAs(111)B substrates via Au catalyzed vapor-liquid-solid mechanism. The diameter, size distribution, and density of Au particles can be changed by varying the Au film thickness. We find that the grown nanowires are of rod-like shapes and pure zinc blende structure; moreover, the growth rate depends on the density of Au particles and it is independent of its diameters. It can be concluded that the nanowire was grown with main contributions from the direct impingement of vapor species onto the Au-Ga droplets and contributions from adatom diffusion can be negligible. The results indicate that the droplet acts as a catalyst rather than an adatom collector.
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| Keywords:
61.46.Hk
68.37.-d
81.07.Gf
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Received: 25 December 2009
Published: 27 March 2010
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