کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5362107 1388281 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Field emission properties of vertically aligned thin-graphite sheets/graphite-encapsulated Cu particles
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Field emission properties of vertically aligned thin-graphite sheets/graphite-encapsulated Cu particles
چکیده انگلیسی

The field emission from planar graphene sheets is usually limited by the morphological features. To overcome this problem, we grow vertically aligned thin-graphite sheets on graphite-encapsulated Cu particles (VGs/GC) using radio-frequency plasma-enhanced chemical vapor deposition (RF-PECVD). Field emission measurements show that the insert of Cu particles can substantially improve the field emission properties of the VGs, which can be attributed to the enhanced local fields at the tip of VGs/GC as well as the electron conductivity enhancement due to the existence of Cu particles. The effects of size and inter-particle distance of Cu particles on field emission for the VGs/GC hybrid material have been revealed.

The insert of Cu particles with larger inter-particle distance can significantly improve the field emission properties of the VGs, which can be attributed to the enhanced local fields at the tip of VGs/GC as well as the electron conductivity enhancement due to the existence of Cu particles.Highlights► VGs/GC material was synthesized to improve the FE property of thin-graphite sheets. ► The insert of Cu has significantly improved the FE property of thin-graphite sheets. ► Inter-particle distance and size of Cu particles affect the FE property of VGs/GC. ► FE properties in the low- and high-field region have different emission mechanisms.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 258, Issue 18, 1 July 2012, Pages 6930-6937
نویسندگان
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