Synthesis of GaN nanowires on gold-coated SiC substrates by novel pulsed electron deposition technique
✍ Scribed by M. Lei; H. Yang; P.G. Li; W.H. Tang
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 857 KB
- Volume
- 254
- Category
- Article
- ISSN
- 0169-4332
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✦ Synopsis
A two-step approach for macro-synthesis of GaN nanowires was developed in this study. GaN nanoparticles were firstly synthesized through a facile solid-state reaction using an organic reagent dicyandiamide (C 2 N 4 H 4 ) and Ga 2 O 3 as precursors. Subsequently, single-crystalline wurtzite GaN nanowires were grown on gold-coated 6H-SiC substrates via novel pulsed electron deposition (PED) technique using the as-prepared GaN nanoparticles as target, which provides a new route employing nanoparticles as precursors to fabricate GaN nanowires. It is found that pulsed electron ablation induced Ga and N plasma directly towards the gold-coated substrate to initialize the vapor-liquid-solid (VLS) growth processes. The morphological and structural properties were investigated in detail and Raman scattering spectrum of these nanowires presented some new features.