کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5425668 1395862 2007 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electronic properties of alkali-metal intercalated single walled carbon nanotubes
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Electronic properties of alkali-metal intercalated single walled carbon nanotubes
چکیده انگلیسی

We present a comparative study of the electronic properties of sodium and lithium intercalated single walled carbon nanotubes in a bucky paper sample by electron energy loss spectroscopy and photoemission spectroscopy. We have found that at room temperature both sodium and lithium rapidly diffuse into the bulk of the sample while different magnitudes of charge transfer from Na and Li to the nanotube bundles have been observed. The maximum observed displacement of the Fermi level is almost the same for both alkali although Na and Li induce quite different changes in the carbon nanotube electronic structure. We interpret our results as a more covalent character of the Li-carbon nanotube interaction with respect to the ionic character of the Na-carbon nanotube interaction; the localization of the charge density along the Li-C bond is responsible for an intertube interaction within the carbon nanotube ropes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 601, Issue 13, 1 July 2007, Pages 2828-2831
نویسندگان
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