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Issue 7, 2014
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An electronic structure perspective of graphene interfaces

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Abstract

The unusual electronic structure of graphene characterized by linear energy dispersion of bands adjacent to the Fermi level underpins its remarkable transport properties. However, for practical device integration, graphene will need to be interfaced with other materials: 2D layered structures, metals (as ad-atoms, nanoparticles, extended surfaces, and patterned metamaterial geometries), dielectrics, organics, or hybrid structures that in turn are constituted from various inorganic or organic components. The structural complexity at these nanoscale interfaces holds much promise for manifestation of novel emergent phenomena and provides a means to modulate the electronic structure of graphene. In this feature article, we review the modifications to the electronic structure of graphene induced upon interfacing with disparate types of materials with an emphasis on iterative learnings from theoretical calculations and electronic spectroscopy (X-ray absorption fine structure (XAFS) spectroscopy, scanning transmission X-ray microscopy (STXM), angle-resolved photoemission spectroscopy (ARPES), and X-ray magnetic circular dichroism (XMCD)). We discuss approaches for engineering and modulating a bandgap in graphene through interfacial hybridization, outline experimental methods for examining electronic structure at interfaces, and overview device implications of engineered interfaces. A unified view of how geometric and electronic structure are correlated at interfaces will provide a rational means for designing heterostructures exhibiting emergent physical phenomena with implications for plasmonics, photonics, spintronics, and engineered polymer and metal matrix composites.

Graphical abstract: An electronic structure perspective of graphene interfaces

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Publication details

The article was received on 31 Dec 2013, accepted on 27 Jan 2014 and first published on 21 Feb 2014


Article type: Feature Article
DOI: 10.1039/C3NR06923K
Citation: Nanoscale, 2014,6, 3444-3466
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    An electronic structure perspective of graphene interfaces

    B. J. Schultz, R. V. Dennis, V. Lee and S. Banerjee, Nanoscale, 2014, 6, 3444
    DOI: 10.1039/C3NR06923K

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