کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9567634 1503719 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and Raman analysis of 1D-ZnO nanostructure via vapor phase growth
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Synthesis and Raman analysis of 1D-ZnO nanostructure via vapor phase growth
چکیده انگلیسی
1D-nanostructural zinc oxide (ZnO) with different shapes have been synthesized on p-type Si(1 0 0) and glass substrates via vapor phase growth by heating pure zinc powder at temperatures between 480 and 570 °C. The different ZnO nanostructures depend on the substrates and the growth temperatures. Scanning electron microscopy and X-ray diffraction revealed that a well-aligned nanowires array, which are vertical to the substrate of Si(1 0 0) with 18 sides on their heads, but six sides on their stems, has been formed at 480 °C. Raman study on the ZnO nanostructures shows that the coupling strength between electron and phonon determined by the ratio of the second- to the first-order Raman scattering cross-sections declines with decreasing diameter of the nanowires. However, a little changes of the coupling strength in terms of the width of the nanobelts have been observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 240, Issues 1–4, 15 February 2005, Pages 175-179
نویسندگان
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