TY - JOUR
T1 - The morphology of graphene sheets treated in an ozone generator
AU - Tao, Haihua
AU - Moser, Joel
AU - Alzina, Francesc
AU - Wang, Q.
AU - Sotomayor-Torres, C. M.
PY - 2011/9/22
Y1 - 2011/9/22
N2 - Using atomic force microscopy and Raman spectroscopy, we characterize the highly disordered morphology of single-layer and multilayer graphene sheets that results from long exposures to ozone molecules and oxygen radicals in an ozone generator. We identify a crossover from a nanocrystalline phase to an amorphous carbon phase in single-layer graphene as the exposure time is increased. We then consider the nanocrystalline phase and compare the morphology of single-layer sheets, multilayer sheets, and graphite flakes. Finally, we find that salient structures, such as steps and folds, act as sinks for disorder. © 2011 American Chemical Society.
AB - Using atomic force microscopy and Raman spectroscopy, we characterize the highly disordered morphology of single-layer and multilayer graphene sheets that results from long exposures to ozone molecules and oxygen radicals in an ozone generator. We identify a crossover from a nanocrystalline phase to an amorphous carbon phase in single-layer graphene as the exposure time is increased. We then consider the nanocrystalline phase and compare the morphology of single-layer sheets, multilayer sheets, and graphite flakes. Finally, we find that salient structures, such as steps and folds, act as sinks for disorder. © 2011 American Chemical Society.
U2 - 10.1021/jp2050756
DO - 10.1021/jp2050756
M3 - Article
VL - 115
SP - 18257
EP - 18260
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 37
ER -