کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5363274 1388299 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhancement of field emission properties of graphite flakes by producing carbon nanotubes on above using thermal chemical vapor deposition
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Enhancement of field emission properties of graphite flakes by producing carbon nanotubes on above using thermal chemical vapor deposition
چکیده انگلیسی

In order to improve the field emission properties of the graphite flakes, the carbon nanotubes (CNTs) are produced on above without the metallic catalyst using mixtures of C2H2 and H2 gases by thermal chemical vapor deposition. We spin the graphite solution on the silicon wafer and dry it, then synthesize the CNTs on the graphite flakes. We change the synthetic time to obtain the optimal conditions for enhancement of field emission properties of graphite flakes. The experimental results show that the density and quality of the CNTs could be controlled significantly by the synthetic time. Besides, the field emission properties of the treated graphite flakes are also affected greatly by it. The emission current density of the treated graphite flakes reaches to 0.5 mA/cm2 at 3 V/μm, and the turn-on field is decreased from 7.7 to 1.9 V/μm after producing the CNTs on above.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 256, Issue 8, 1 February 2010, Pages 2409-2413
نویسندگان
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