Photoluminescence and band gap modulation in graphene oxide

✍ Scribed by Luo, Zhengtang; Vora, Patrick M.; Mele, Eugene J.; Johnson, A. T. Charlie; Kikkawa, James M.

• Book ID: 120354166
• Publisher: American Institute of Physics
• Year: 2009
• Tongue: English
• Weight: 436 KB
• Volume: 94
• Category: Article
• ISSN: 0003-6951
• DOI: 10.1063/1.3098358

✦ Synopsis

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.