Controlled synthesis of bilayer graphene on nickel

We report a uniform and low-defect synthesis of bilayer graphene on evaporated polycrystalline nickel films. We used atmospheric pressure chemical vapor deposition with ultra-fast substrate cooling after exposure to methane at 1,000°C. The optimized process parameters, i.e., growth time, annealing p...

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Detalles Bibliográficos
Autores principales: Umair, Ahmad, Raza, Hassan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer 2012
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3479054/
https://www.ncbi.nlm.nih.gov/pubmed/22863171
http://dx.doi.org/10.1186/1556-276X-7-437
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author Umair, Ahmad
Raza, Hassan
author_facet Umair, Ahmad
Raza, Hassan
author_sort Umair, Ahmad
collection PubMed
description We report a uniform and low-defect synthesis of bilayer graphene on evaporated polycrystalline nickel films. We used atmospheric pressure chemical vapor deposition with ultra-fast substrate cooling after exposure to methane at 1,000°C. The optimized process parameters, i.e., growth time, annealing profile and flow rates of various gases, are reported. By using Raman spectroscopy mapping, the ratio of 2D to G peak intensities (I(2D)/I(G)) is in the range of 0.9 to 1.6 over 96% of the 200 μm × 200 μm area. Moreover, the average ratio of D to G peak intensities (I(D)/I(G)) is about 0.1.
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spelling pubmed-34790542012-10-24 Controlled synthesis of bilayer graphene on nickel Umair, Ahmad Raza, Hassan Nanoscale Res Lett Nano Express We report a uniform and low-defect synthesis of bilayer graphene on evaporated polycrystalline nickel films. We used atmospheric pressure chemical vapor deposition with ultra-fast substrate cooling after exposure to methane at 1,000°C. The optimized process parameters, i.e., growth time, annealing profile and flow rates of various gases, are reported. By using Raman spectroscopy mapping, the ratio of 2D to G peak intensities (I(2D)/I(G)) is in the range of 0.9 to 1.6 over 96% of the 200 μm × 200 μm area. Moreover, the average ratio of D to G peak intensities (I(D)/I(G)) is about 0.1. Springer 2012-08-06 /pmc/articles/PMC3479054/ /pubmed/22863171 http://dx.doi.org/10.1186/1556-276X-7-437 Text en Copyright ©2012 Umair and Raza; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Nano Express
Umair, Ahmad
Raza, Hassan
Controlled synthesis of bilayer graphene on nickel
title Controlled synthesis of bilayer graphene on nickel
title_full Controlled synthesis of bilayer graphene on nickel
title_fullStr Controlled synthesis of bilayer graphene on nickel
title_full_unstemmed Controlled synthesis of bilayer graphene on nickel
title_short Controlled synthesis of bilayer graphene on nickel
title_sort controlled synthesis of bilayer graphene on nickel
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3479054/
https://www.ncbi.nlm.nih.gov/pubmed/22863171
http://dx.doi.org/10.1186/1556-276X-7-437
work_keys_str_mv AT umairahmad controlledsynthesisofbilayergrapheneonnickel
AT razahassan controlledsynthesisofbilayergrapheneonnickel

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