Original title: Microscopic characterization of graphene material and electronic quality across neighbouring, differently oriented copper grains
Authors: Čermák, Jan ; Yamada, T. ; Ganzerová, Kristína ; Rezek, Bohuslav
Document type: Papers
Conference/Event: International Conference NANOCON /6./, Brno (CZ), 2014-11-05 / 2014-11-07
Year: 2015
Language: eng
Abstract: We study graphene grown across the boundary of three such grains having bright, medium, and dark color in reflection. Raman micro-spectroscopy proves presence of mostly a monoor bi-layer graphene on all the grains. Yet intensity of Raman 2D band is grain-dependent: highest at the darkest grain and lowest at the brightest one. Contrary, conductive atomic force microscopy detects the highest conductivity at the brightest grain and the lowest current at the darkest grain. This is attributed to dominant electrical current path through graphene and underlying oxide thickness of which also depends on the type of copper grain. We correlate and discuss the results with view to better understanding of graphene growth and electronic properties on large area copper substrates.
Keywords: atomic force microscopy; chemical vapor deposition; electronic properties; graphene; Raman spectroscopy
Project no.: GBP108/12/G108 (CEP)
Funding provider: GA ČR
Host item entry: NANOCON 2014 Conference Proceedings, ISBN 978-80-87294-53-6

Institution: Institute of Physics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0238688

Permalink: http://www.nusl.cz/ntk/nusl-177576


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Research > Institutes ASCR > Institute of Physics
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