2017/03/21 by Haichang Lu, Lu, Haichang, Yuzheng Guo +3
Engineering · Materials Science · Physics and Astronomy · #Carbon Nanotubes in Composites #FOS: Physical sciences #Graphene research and applications #Materials Science (cond-mat.mtrl-sci) #Molecular Junctions and Nanostructures #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.1703.07315
20 pages, 10 figures
arxiv created 2017/03/21 · openalex publication_date 2017/03/21 · arxiv updated 2017/03/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Density functional calculations are used to explain the charge transfer doping mechanism by which species physisorptively bonded to graphene can increase its free hole or electron density, without giving rise to defects, and thus maintain a high carrier mobility. Typical dopants studied are FeCl3, AuCl3, SbF5, HNO3, MoO3, Cs2O and O2. These systems do not break the π bonding of the basal plane are particularly important as these do not degrade the carrier mobility. In contrast, more reactive radicals like -OH cause a puckering of the basal plane and thereby act as defects.