کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8033002 | 1517964 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Graphene fabrication via carbon segregation through transition metal films
ترجمه فارسی عنوان
ساخت گرافن از طریق جداسازی کربن از طریق فلزات انتقالی
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کلمات کلیدی
گرافن، جداسازی، سنتز، فاز کاربید، فلز انتقالی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی
A detailed study of graphene growth process via segregation of carbon atoms through a 16â¯nm-thick metal film is presented. Two different transition metals - Co and Ni - are deposited on a highly-oriented pyrolytic graphite (HOPG) substrate. It is demonstrated that annealing of the systems leads to segregation of carbon atoms from the substrate to the surface. X-ray photoemission studies show that in both cases a metal-rich carbide phase is formed in a near-surface area, which after a low-temperature annealing transforms into carbon-rich carbide phase. After further increase of the annealing temperature this carbide phase is transformed into graphene mono- and multilayers. Low energy electron diffraction measurements show that at the final stage a large part of the sample is covered with highly-ordered graphene domains, however a lot of small variously oriented domains can also be seen. It is shown that graphene on Co/HOPG is formed at comparable temperatures to that on Ni/HOPG, and it has better ordered surface.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 648, 28 February 2018, Pages 120-127
Journal: Thin Solid Films - Volume 648, 28 February 2018, Pages 120-127
نویسندگان
D.A. Pudikov, E.V. Zhizhin, A.G. Rybkin, A.M. Shikin,