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DS: Fachverband Dünne Schichten
DS 5: 2D Materials and their Heterostructures II: Graphene and Graphene Containing Heterostructures
DS 5.4: Talk
Tuesday, March 19, 2024, 10:15–10:30, A 053
Graphene meets the macroscopic world: structure-property relationships and intercalation — •Florian Fuchs1,2,3, Fabian Teichert1,2,3, Daniel Dick1,2,3, and Jörg Schuster1,2,3 — 1Center for Microtechnologies, Chemnitz University of Technology, Chemnitz, Germany — 2Fraunhofer Insitute for Electronic Nano Systems (ENAS), Chemnitz, Germany — 3Center for Materials, Architectures and Integration of Nanomembranes (MAIN), Chemnitz University of Technology, Chemnitz, Germany
We study graphene-based conductor materials to leverage the excellent electronic transport properties of graphene into the macroscopic world. In these conductor materials, the individual graphene flakes form a layered macrostructure. A network model has been developed to relate microscopic graphene flake properties to the resulting macroscopic transport properties. Different flake sizes, packing densities, and contact geometries can be studied with this approach.
In addition, the layered structure of graphene-based conductor materials enables further material tuning by intercalating suitable materials in-between the graphene layers. An overview over different ongoing investigations of such systems, which are driven forward by density functional theory, will be given. We discuss the impact of different intercalants, like metal atoms and small molecules, onto the structural and electronical properties.
Keywords: graphene intercalation compound; graphite intercalation compound; macromaterial; density functional theory; nodal analysis