کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5353428 | 1388163 | 2016 | 28 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Surface characterization of graphene based materials
ترجمه فارسی عنوان
خصوصیات سطحی مواد بر اساس گرافن
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
چکیده انگلیسی
In the present study, two kind of samples were used: (i) a monolayer graphene film with a thickness of 0.345Â nm deposited by the CVD method on Cu foil, (ii) graphene flakes obtained by modified Hummers method and followed by reduction of graphene oxide. The inelastic mean free path (IMFP), characterizing electron transport in graphene/Cu sample and reduced graphene oxide material, which determines the sampling depth of XPS and AES were evaluated from relative Elastic Peak Electron Spectroscopy (EPES) measurements with the Au standard in the energy range 0.5-2Â keV. The measured IMFPs were compared with IMFPs resulting from experimental optical data published in the literature for the graphite sample. The EPES IMFP values at 0.5 and 1.5Â keV was practically identical to that calculated from optical data for graphite (less than 4% deviation). For energies 1 and 2Â keV, the EPES IMFPs for rGO were deviated up to 14% from IMFPs calculated using the optical data by Tanuma et al. [1]. Before EPES measurements all samples were characterized by various techniques like: FE-SEM, AFM, XPS, AES and REELS to visualize the surface morphology/topography and identify the chemical composition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 388, Part B, 1 December 2016, Pages 696-703
Journal: Applied Surface Science - Volume 388, Part B, 1 December 2016, Pages 696-703
نویسندگان
M. Pisarek, M. Holdynski, M. Krawczyk, R. Nowakowski, A. Roguska, A. Malolepszy, L. Stobinski, A. Jablonski,