Photoluminescence and band gap modulatio
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Luo, Zhengtang; Vora, Patrick M.; Mele, Eugene J.; Johnson, A. T. Charlie; Kikka
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Article
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2009
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American Institute of Physics
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English
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We report broadband visible photoluminescence from solid graphene oxide, and modifications of the emission spectrum by progressive chemical reduction. The data suggest a gapping of the two-dimensional electronic system by removal of ฯ-electrons. We discuss possible gapping mechanisms, and propose th