Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/95988
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dc.contributor.authorLuo, Zhiqiangen
dc.contributor.authorCong, Chunxiaoen
dc.contributor.authorZhang, Junen
dc.contributor.authorXiong, Qihuaen
dc.contributor.authorYu, Tingen
dc.date.accessioned2013-06-27T06:30:14Zen
dc.date.accessioned2019-12-06T19:24:03Z-
dc.date.available2013-06-27T06:30:14Zen
dc.date.available2019-12-06T19:24:03Z-
dc.date.copyright2012en
dc.date.issued2012en
dc.identifier.citationLuo, Z., Cong, C., Zhang, J., Xiong, Q., & Yu, T. (2012). The origin of sub-bands in the Raman D-band of graphene. Carbon, 50(11), 4252-4258.en
dc.identifier.issn0008-6223en
dc.identifier.urihttps://hdl.handle.net/10356/95988-
dc.description.abstractIn Raman spectroscopy investigations of defective suspended graphene, splitting in the D band is observed. Four double resonance Raman scattering processes: the outer and inner scattering processes, as well as the scattering processes with electrons first scattered by phonons (“phonon-first”) or by defects (“defect-first”), are found to be responsible for these features of the D band. The D sub-bands associated with the outer and inner processes merge with increasing defect concentration. However a Stokes/anti-Stokes Raman study indicates that the splitting of the D band due to the separate “phonon-first” and “defect-first” processes is valid for suspended graphene. For graphene samples on a SiO2/Si substrate, the sub-bands of D band merge due to the increased Raman broadening parameter resulting from the substrate doping. Moreover, the merging of the sub-bands shows excitation energy dependence, which can be understood by considering the energy dependent lifetime and/or scattering rate of photo-excited carriers in the Raman scattering process.en
dc.language.isoenen
dc.relation.ispartofseriesCarbonen
dc.rights© 2012 Elsevier Ltd.en
dc.titleThe origin of sub-bands in the Raman D-band of grapheneen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen
dc.identifier.doi10.1016/j.carbon.2012.05.008en
item.fulltextNo Fulltext-
item.grantfulltextnone-
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