✦ LIBER ✦

Catalytic synthesis of single-crystalline gallium nitride nanobelts

✍ Scribed by Xu Xiang; Chuanbao Cao; Hesun Zhu

Publisher: Elsevier Science
Year: 2003
Tongue: English
Weight: 382 KB
Volume: 126
Category: Article
ISSN: 0038-1098
DOI: 10.1016/s0038-1098(03)00162-5

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✦ Synopsis

Single-crystalline gallium nitride nanobelts have been synthesized through the reaction of gallium vapor with flowing ammonia using nickel as a catalyst. The as-synthesized products were characterized using X-ray powder diffraction (XRD), scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, and selected-area electron diffraction (SAED). XRD and SAED results revealed that the products are pure, single-crystalline GaN with hexagonal structure. The widths and thickness of the nanobelts ranged from 80 to 200 nm, and 10 to 30 nm, respectively. The lengths were up to several tens of micrometers. The nanobelts had smooth surface with no amorphous sheath, and a sharp-tip end. The growth mechanism of nanobelts was discussed.

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