کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1547630 | 997638 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and photoluminescence property of silicon carbon nanowires synthesized by the thermal evaporation method
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The purity of β-SiC nanowires is raised obviously by using an ordered nanoporous anodic aluminum oxide template by the thermal evaporation method without any metal catalyst. The microstructures were characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction and high-resolution transmission electron microscopy. The results show that the synthesized products mainly consist of nanowires, which are single-crystalline β-SiC with diameters of about 50 nm and tens of micrometers long. The nanowires axes lie along the ã1 1 1ã direction and possess a high density of planar defects. The β-SiC nanowires exhibit the strong photoluminescence peaks at wavelength 400 nm, which is significantly shifted to the blue compared with the reported luminescence results of SiC materials. The blueshift may be ascribed to morphology, quantum size confinement effects of the nanomaterials and abundant structure defects that existed in the nanowires. Finally, the growth mechanism of SiC nanowires and the effect of anodic aluminum oxide template are also analyzed and discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 41, Issue 4, February 2009, Pages 655-659
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 41, Issue 4, February 2009, Pages 655-659
نویسندگان
Enlei Zhang, Yuanhong Tang, Yong Zhang, Chi Guo,