title: Tunable carrier type and density in graphene/PbZr0.2Ti0.8O3 hybrid structures through ferroelectric switching.
abstract: Bidirectional interdependency between graphene doping level and ferroelectric polarization is demonstrated in graphene/PbZr0.2Ti0.8O3 hybrid structures. The polarization of the PbZr0.2Ti0.8O3 can be effectively switched with graphene electrodes and can in turn alter carrier type and density in the graphene. A complete reversal of the current-voltage hysteresis direction is observed in the graphene when external environmental factors are minimized, converting p-type graphene into n-type with an estimated carrier density change as large as ~10(13) cm(-2). Nonvolatility and reversibility are also demonstrated.
authors.affiliation: Department of Materials Science and Engineering and Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801, United States.
authors.forename: Christoph
authors.initials: C
authors.lastname: Baeumer
authors.forename: Steven P
authors.initials: SP
authors.lastname: Rogers
authors.forename: Ruijuan
authors.initials: R
authors.lastname: Xu
authors.forename: Lane W
authors.initials: LW
authors.lastname: Martin
authors.forename: Moonsub
authors.initials: M
authors.lastname: Shim
mesh_terms: D004566:Electrodes; D006108:Graphite / Q000737:chemistry*; D007501:Iron / Q000737:chemistry; D007854:Lead / Q000737:chemistry; D012666:Semiconductors; D014025:Titanium / Q000737:chemistry; D015040:Zirconium / Q000737:chemistry
chemical_list: D007854:Lead; D006108:Graphite; D015040:Zirconium; D014025:Titanium; D007501:Iron