title: Selective n-type doping of graphene by photo-patterned gold nanoparticles.
abstract: Selective n-type doping of graphene is developed by utilizing patternable gold nanoparticles functionalized with photoreactive cinnamate moieties. The gold nanoparticles can be regularly patterned on the graphene by UV-induced cross-linking of cinnamate, which provides a convenient method to control the optical and electrical properties of graphene site-specifically. The strong n-type doping of graphene covered with the patterned gold nanoparticles was confirmed by Raman, X-ray photoelectron spectroscopy, and electron transport measurements. We believe that our method would find numerous applications in the area of graphene-based optoelectronics including light-emitting devices, solar cells, and optical sensors.
authors.affiliation: Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Korea.
authors.forename: Sung
authors.initials: S
authors.lastname: Huh
authors.forename: Jaesung
authors.initials: J
authors.lastname: Park
authors.forename: Kwang S
authors.initials: KS
authors.lastname: Kim
authors.forename: Byung Hee
authors.initials: BH
authors.lastname: Hong
authors.forename: Seung Bin
authors.initials: SB
authors.lastname: Kim
mesh_terms: D004579:Electron Transport; D006046:Gold / Q000737:chemistry* / Q000528:radiation effects; D006108:Graphite / Q000737:chemistry* / Q000528:radiation effects; D008027:Light; D046911:Macromolecular Substances / Q000737:chemistry / Q000528:radiation effects; D008422:Materials Testing; D008968:Molecular Conformation / Q000528:radiation effects; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure*; D010316:Particle Size; D012666:Semiconductors; D013499:Surface Properties / Q000528:radiation effects
chemical_list: D046911:Macromolecular Substances; D006046:Gold; D006108:Graphite