کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1791708 1023618 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Direct observation of nucleation and early stages of growth of GaN nanowires
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Direct observation of nucleation and early stages of growth of GaN nanowires
چکیده انگلیسی

We report direct observations of the nucleation and early stages of growth of GaN nanowires. The nanowires were formed by exposing Au+Ga droplets to ammonia. The formation process was observed in situ, and controlled in real time using an environmental transmission electron microscope. Observations show that nuclei forms only at thin region of the Au+Ga, following only the VLS mechanism. The droplet–nanowire interface in the initial stages is multi-faceted, and become planar during the growth. Chemical and structural analysis shows that the resulting nuclei are GaN with the wurtzite structure.


► In this study we report in situ observations of the nucleation and early stages of the growth of GaN nanowires.
► The nanowires were formed by exposing Au+Ga droplets to ammoniausing an environmental transmission electron microscope.
► Observations show that nuclei form only at thin region of the Au+Ga droplets.
► The droplet–nanowire interface in the initial stages is multi-faceted, and becomes planar during the growth.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 341, Issue 1, 15 February 2012, Pages 1–6
نویسندگان
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