کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
703727 1460822 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Stability of field emission current from various types of carbon nanotube films
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
Stability of field emission current from various types of carbon nanotube films
چکیده انگلیسی

A series of emission current measurements were taken from various types of multiwalled carbon nanotube (MWCNT) films in order to examine their stability for electron field emission. We found that the MWCNTs films grown by the catalytic thermal chemical vapor deposition (CVD) method exhibited much improved emission stability as compared to MWCNT films grown by the plasma-enhanced CVD (PECVD) method. We explain this difference of performance by referring to the graphitic order of these MWCNTs as detected by transmission electron microscopy and Raman spectroscopy. Results indicate that MWCNTs with high-order tubular structures demonstrate stable electron field emission. The best performing sample exhibits a constant current degradation of ∼3% per hour at an emission current density of ∼1 mJ/cm2.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Diamond and Related Materials - Volume 15, Issues 2–3, February–March 2006, Pages 212–216
نویسندگان
, , , , ,