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Title: Thickness-dependent azobenzene doping in mono- and few-layer graphene
Authors: Peimyoo, Namphung
Yu, Ting
Shang, Jingzhi
Cong, Chunxiao
Yang, Huanping
Issue Date: 2011
Source: Peimyoo, N., Yu, T., Shang, J., Cong, C., & Yang, H. (2012). Thickness-dependent azobenzene doping in mono- and few-layer graphene. Carbon, 50(1), 201-208.
Series/Report no.: Carbon
Abstract: Doping effects on exfoliated graphenes induced by methyl orange (MO) have been studied by spatially resolved Raman spectroscopy. When the MO molecules were adsorbed on the top of graphenes, the charge transfer between them caused two outcomes simultaneously. One is the strong chemical doping in graphenes and the other is the enhanced Raman signals of MO molecules. Our finding provides a potential approach for manipulating the electronic properties of graphenes and investigating the vibrational properties of molecules. Moreover, the thickness-dependent doping effects in graphenes are unambiguous distinguished by Raman imaging. The possible origin was discussed and designated to the different band structures of graphenes and the screening effect.
ISSN: 0008-6223
DOI: 10.1016/j.carbon.2011.08.035
Rights: © 2011 Elsevier Ltd.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SPMS Journal Articles

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