Atomic and electronic structure of graphene oxide/Cu interface

Atomic and electronic structure of graphene-oxide.

We elucidate the atomic and electronic structure of graphene oxide (GO) using annular dark field imaging of single and multilayer sheets and electron energy loss spectroscopy for measuring the fine structure of C and O K-edges in a scanning transmission electron microscope. Partial density of states and electronic plasma excitations are also measured for these GO sheets showing unusual pi* + si...

Direct imaging of graphene edges: atomic structure and electronic scattering.

We report an atomically resolved scanning tunneling microscopy investigation of the edges of graphene grains synthesized on Cu foils by chemical vapor deposition. Most of the edges are macroscopically parallel to the zigzag directions of graphene lattice. These edges have microscopic roughness that is found to also follow zigzag directions at atomic scale, displaying many ∼120° turns. A promine...

Local Atomic and Electronic Structure of Boron Chemical Doping in Monolayer Graphene Supporting Information

Supporting Information Liuyan Zhao, Mark P. Levendorf, Scott Goncher, Theanne Schiros, Lucia Pálová, Amir Zabet-Khosousi, Kwang Taeg Rim, Christopher Gutiérrez, Dennis Nordlund , Cherno Jaye, Mark Hybertsen, David Reichman, George W. Flynn, Jiwoong Park, Abhay N. Pasupathy. Department of Physics, Columbia University, New York, New York, 10027, United States Chemistry Department, Cornell Univers...

Local atomic and electronic structure of boron chemical doping in monolayer graphene.

We use scanning tunneling microscopy and X-ray spectroscopy to characterize the atomic and electronic structure of boron-doped and nitrogen-doped graphene created by chemical vapor deposition on copper substrates. Microscopic measurements show that boron, like nitrogen, incorporates into the carbon lattice primarily in the graphitic form and contributes ~0.5 carriers into the graphene sheet per...

Atomic structure and electronic properties of folded graphene nanoribbons: A first- principles study