Počet záznamů: 1
Rapid Identification of Stacking Orientation in Isotopically Labeled Chemical-Vapor Grown Bilayer Graphene by Raman Spectroscopy
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SYSNO ASEP 0437084 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Rapid Identification of Stacking Orientation in Isotopically Labeled Chemical-Vapor Grown Bilayer Graphene by Raman Spectroscopy Tvůrce(i) Fang, W. (US)
Hsu, A. L. (US)
Caudillo, R. (US)
Song, Y. (US)
Birdwell, A. G. (US)
Zakar, E. (US)
Kalbáč, Martin (UFCH-W) RID, ORCID
Dubey, M. (US)
Palacios, T. (US)
Dresselhaus, M. S. (US)
Araujo, P. T. (US)
Kong, J. (US)Zdroj.dok. Nano Letters. - : American Chemical Society - ISSN 1530-6984
Roč. 13, č. 4 (2013), s. 1541-1548Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova AB-stacked bilayer graphene ; carbon isotope ; fluorination Vědní obor RIV CF - Fyzikální chemie a teoretická chemie CEP GAP208/12/1062 GA ČR - Grantová agentura ČR LH13022 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UFCH-W - RVO:61388955 UT WOS 000317549300029 EID SCOPUS 84876034479 DOI 10.1021/nl304706j Anotace The growth of large-area bilayer graphene has been of technological importance for graphene electronics. The successful application of graphene bilayers critically relies on the precise control of the stacking orientation, which determines both electronic and vibrational properties of the bilayer system. Toward this goal, an effective characterization method is critically needed to allow researchers to easily distinguish the bilayer stacking orientation (i.e., AB stacked or turbostratic). In this work, we developed such a method to provide facile identification of the stacking orientation by isotope labeling. Raman spectroscopy of these isotopically labeled bilayer samples shows a clear signature associated with AB stacking between layers, enabling rapid differentiation between turbostratic and AB-stacked bilayer regions. Using this method, we were able to characterize the stacking orientation in bilayer graphene grown through Low Pressure Chemical Vapor Deposition (LPCVD) with enclosed Cu foils, achieving almost 70% AB-stacked bilayer graphene. Furthermore, by combining surface sensitive fluorination with such hybrid C-12/C-13 bilayer samples, we are able to identify that the second layer grows underneath the first-grown layer, which is similar to a recently reported observation. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2015
Počet záznamů: 1