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Título: | Counting molecular-beam grown graphene layers |
Autor: | Plaut, Annette S.; Wurstbauer, Ulrich; Pinczuk, Aron; García Martínez, Jorge Manuel CSIC ORCID CVN ; Pfeiffer, Loren N. | Fecha de publicación: | 2013 | Editor: | American Institute of Physics | Citación: | Applied Physics Letters 102: 241905 (2013) | Resumen: | We have used the ratio of the integrated intensity of graphene's Raman G peak to that of the silicon substrate's first-order optical phonon peak, accurately to determine the number of graphene layers across our molecular-beam (MB) grown graphene films. We find that these results agree well both, with those from our own exfoliated single and few-layer graphene flakes, and with the results of Koh [ACS Nano 5, 269 (2011)]. We hence distinguish regions of single-, bi-, tri-, four-layer, etc., graphene, consecutively, as we scan coarsely across our MB-grown graphene. This is the first, but crucial, step to being able to grow, by such molecular-beam-techniques, a specified number of large-area graphene layers, to order. © 2013 AIP Publishing LLC. | Versión del editor: | http://dx.doi.org/10.1063/1.4811708 | URI: | http://hdl.handle.net/10261/132639 | DOI: | 10.1063/1.4811708 | Identificadores: | issn: 0003-6951 e-issn: 1077-3118 |
Aparece en las colecciones: | (IMN-CNM) Artículos |
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molecular-beam_grown_Plaut.pdf | 1,65 MB | Adobe PDF | Visualizar/Abrir |
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