title: Rivet Graphene.
abstract: Large-area graphene has emerged as a promising material for use in flexible and transparent electronics due to its flexibility and optical and electronic properties. The anchoring of transition metal nanoparticles on large-area single-layer graphene is still a challenge. Here, we report an in situ preparation of carbon nano-onion-encapsulated Fe nanoparticles on rebar graphene, which we term rivet graphene. The hybrid film, which allows for polymer-free transfer and is strong enough to float on water with no added supports, exhibits high optical transparency, excellent electric conductivity, and good hole/electron mobility under certain tensile/compressive strains. The results of contact resistance and transfer length indicate that the current in the rivet graphene transistor does not just flow at the contact edge. Carbon nano-onions encapsulating Fe nanoparticles on the surface enhance the injection of charge between rivet graphene and the metal electrode. The anchoring of Fe nanoparticles encapsulated by carbon nano-onions on rebar graphene will provide additional avenues for applications of nanocarbon-based films in transparent and flexible electronics.
authors.affiliation: School of Materials Science and Engineering, Chongqing University , Chongqing 400030, China.
authors.forename: Xinlu
authors.initials: X
authors.lastname: Li
authors.affiliation: School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University , Tianjin 300350, China.|Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300350, China.
authors.forename: Junwei
authors.initials: J
authors.lastname: Sha
authors.forename: Seoung-Ki
authors.initials: SK
authors.lastname: Lee
authors.forename: Yilun
authors.initials: Y
authors.lastname: Li
authors.forename: Yongsung
authors.initials: Y
authors.lastname: Ji
authors.affiliation: School of Materials Science and Engineering, Chongqing University , Chongqing 400030, China.
authors.forename: Yujie
authors.initials: Y
authors.lastname: Zhao
authors.forename: James M
authors.initials: JM
authors.lastname: Tour
keywords: Fe nanoparticles; carbon nanotubes; hybrid film; nano-onions; rebar graphene