Three-dimensional dendrite-like nanostructures of gallium nitride

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• 作者：Qingfang Meng ; Chuanbin Jiang ; Scott X. Mao
• 关键词：A1. Nanostructures ; B1. Gallium compounds ; B1. Nanomaterials ; B2. Semiconducting materials
• 刊名：Journal of Crystal Growth
• 出版年：2007
• 出版时间：1 October 2007
• 年：2007
• 卷：308
• 期：1
• 页码：166-169
• 全文大小：494 K

文摘

Three-dimensional (3D) dendrite-like GaN nanostructures with sixfold symmetry branches were synthesized by a secondary Au-catalyzed vapor–liquid–solid (VLS) growth process. X-ray diffraction (XRD) analysis reveals that the as-grown GaN is wurtzite structure. The dendrite-like nanostructures resulted from the branches growth along the six crystallographically equivalent directions of 1 0 1¯ 0 in a 0 0 0 1 oriented GaN stem nanowire. The growth model was established and discussed according to the experimental results. Raman scattering spectrums were measured and the differences in Raman spectrums between the first- and second-synthesized products were discussed.