کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5426850 1395910 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tunneling-current-induced light emission from individual carbon nanotubes
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Tunneling-current-induced light emission from individual carbon nanotubes
چکیده انگلیسی

Tunneling electrons from a scanning tunneling microscope were used to excite light emission from individual multiwalled carbon nanotubes adsorbed on a highly ordered pyrolytic graphite surface. In the integral photon-intensity map, spatially uniform emission in the visible region was observed along the identical multiwalled carbon nanotubes. The emission spectra for the individual nanotubes showed unique profiles which differed with each nanotube, and were classified into two types. Our results indicate that the light emission is due to not the localized electronic states at the tube ends or defects but radiative transitions of electrons between the one-dimensional van Hove singularities, indicating that the two types of spectra are attributed to metallic and semiconducting nanotubes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 600, Issue 3, 1 February 2006, Pages L15-L19
نویسندگان
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