Date of this Version
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 π-electrons. We discuss possible gapping mechanisms, and propose that a Kekule pattern of bond distortions may account for the observed behavior.
Luo, Z., Vora, P., Mele, E. J., Johnson, A., & Kikkawa, J. M. (2009). Photoluminescence and Band Gap Modulation in Graphene Oxide. Retrieved from http://repository.upenn.edu/physics_papers/64
Date Posted: 06 January 2011
This document has been peer reviewed.