کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5357361 1503664 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Surface structure deduced differences of copper foil and film for graphene CVD growth
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Surface structure deduced differences of copper foil and film for graphene CVD growth
چکیده انگلیسی
Graphene was synthesized on Cu foil and film by atmospheric pressure chemical vapor deposition (CVD) with CH4 as carbon source. Electron backscattered scattering diffraction (EBSD) characterization demonstrates that the Cu foil surface after the H2-assisted pre-annealing was almost composed of Cu(1 0 0) crystal facet with larger grain size of ∼100 μm; meanwhile, the Cu film surface involved a variety of crystal facets of Cu(1 1 1), Cu(1 0 0), and Cu(1 1 0), with the relatively small grain size of ∼10 μm. The different surface structure led to the distinctive influences of the CH4 and H2 concentrations on the thickness and quality of as-grown graphene. Further data demonstrate that the Cu foil enabled more nucleation densities and faster growth rates at the initial growth stages than the Cu film. Our results are beneficial for understanding the relationship between the metal surface structure and graphene CVD growth.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 300, 1 May 2014, Pages 73-79
نویسندگان
, , , , , , , ,