title: Doping monolayer graphene with single atom substitutions.
abstract: Functionalized graphene has been extensively studied with the aim of tailoring properties for gas sensors, superconductors, supercapacitors, nanoelectronics, and spintronics. A bottleneck is the capability to control the carrier type and density by doping. We demonstrate that a two-step process is an efficient way to dope graphene: create vacancies by high-energy atom/ion bombardment and fill these vacancies with desired dopants. Different elements (Pt, Co, and In) have been successfully doped in the single-atom form. The high binding energy of the metal-vacancy complex ensures its stability and is consistent with in situ observation by an aberration-corrected and monochromated transmission electron microscope.
authors.affiliation: Institute of Applied Mechanics, Zhejiang University, Hangzhou 310027, China.
authors.forename: Hongtao
authors.initials: H
authors.lastname: Wang
authors.forename: Qingxiao
authors.initials: Q
authors.lastname: Wang
authors.forename: Yingchun
authors.initials: Y
authors.lastname: Cheng
authors.forename: Kun
authors.initials: K
authors.lastname: Li
authors.forename: Yingbang
authors.initials: Y
authors.lastname: Yao
authors.forename: Qiang
authors.initials: Q
authors.lastname: Zhang
authors.forename: Cezhou
authors.initials: C
authors.lastname: Dong
authors.forename: Peng
authors.initials: P
authors.lastname: Wang
authors.forename: Udo
authors.initials: U
authors.lastname: Schwingenschlögl
authors.forename: Wei
authors.initials: W
authors.lastname: Yang
authors.forename: X X
authors.initials: XX
authors.lastname: Zhang
mesh_terms: D003460:Crystallization / Q000379:methods*; D006108:Graphite / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008670:Metals / Q000737:chemistry*; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D013499:Surface Properties
chemical_list: D046911:Macromolecular Substances; D008670:Metals; D006108:Graphite