Photoluminescence and band gap modulation in graphene oxide | Zendy

Zhengtang Luo | Zendy; Patrick M. Vora | Zendy; E. J. Melé | Zendy; A. T. Charlie Johnson | Zendy; James M. Kikkawa | Zendy

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Photoluminescence and band gap modulation in graphene oxide

Author(s) -

Zhengtang Luo,

Patrick M. Vora,

E. J. Melé,

A. T. Charlie Johnson,

James M. Kikkawa

Publication year - 2009

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3098358

Subject(s) - photoluminescence , graphene , oxide , materials science , band gap , electron , modulation (music) , optoelectronics , broadband , nanotechnology , physics , optics , quantum mechanics , metallurgy , acoustics

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 pi-electrons. We discuss possible gapping mechanisms, and propose that a Kekule pattern of bond distortions may account for the observed behavior

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