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Zhen Hua Ni, Hao Min Wang, Zhi Qiang Luo, Ying Ying Wang, Ting Yu, Yi Hong Wu and Ze Xiang Shen The effect of vacuum annealing on graphene Journal of Raman Spectroscopy 41

Version of Record online: 21 OCT 2009 | DOI: 10.1002/jrs.2485

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The effect of vacuum annealing on the properties of graphene is investigated by Raman spectroscopy and electrical measurement. Heavy hole doping on graphene is observed after vacuum annealing and exposed to an air ambient, which might be due to the H2O and O2 adsorption. Graphene is believed to be more active to molecular adsorption after annealing.

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