کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
540728 871338 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improved field emission characteristics of screen-printed CNT-FED cathode by interfusing Fe/Ni nano-grains
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر سخت افزارها و معماری
پیش نمایش صفحه اول مقاله
Improved field emission characteristics of screen-printed CNT-FED cathode by interfusing Fe/Ni nano-grains
چکیده انگلیسی

Carbon nanotube (CNT) cathode with and without interfusing nano-metal particles was prepared using screen-printing technology. For the good electric conductivity of metal, the turn-on electric field of the Fe/Ni and CNT composite film (Fe/CNT film) decreases to 1.42 V/μm comparing with the usual CNT film of 2.45 V/μm, and the emission current increases from 60 μA to 440 μA at an applied electric field of 2.3 V/μm. Furthermore, the field enhancement factor β increases from 1721 to 3242. By characterizing the prepared samples via X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM), it is found that carbide Fe3C phase is formed in Fe/CNT film, and the metal particles are filled in the interspaces of CNTs. It is evaluated that benefiting from good electrical conductivity and chemical inertness of metal carbide, Fe/CNT film achieves high emission characteristics and emission uniformity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Displays - Volume 30, Issue 3, July 2009, Pages 114–118
نویسندگان
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