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Tailoring properties of single layer MoS2: looking beyond graphene

Talat S. Rahman
Department of Physics. University of Central Florida

Single-layer Molybdenum disulfide (MoS2) appears to be a promising material for next generation nanoscale applications because of its low-dimensionality and intrinsic direct band-gap of about 1.9 eV. Several experimental groups have reported novel electronic and transport properties which place this material beyond graphene for device applications. Efforts are underway to further tune these properties through alloying, defects, doping, and coupling to substrate. In this talk I will present results from joint theoretical and experimental investigations [1-3] which provide a framework for manipulating the functionality of this wundermaterial and take us closer to the goal of rational material design. My emphasis will be on the structural, optical and catalytic properties of pure and defect-laden single layer MoS2 and their possible technological applications.

[1] D. Sun, et al., “An MoSx Structure with High Affinity for Adsorbate Interaction,” Angew. Chem. Int. Ed. 51, 10284 (2012).
[2] D. Le, T. B. Rawal, and T. S. Rahman, “Single-Layer MoS2 with Sulfur-Vacancies: Structure and Catalytic Application,” J. Phys. Chem. C 118, 5346 (2014).
[3] T. Komesu, D. Le, et al., “Occupied and unoccupied electronic structure of Na doped MoS2(0001),” App. Phys. Lett. 105, 241602 (2014).

Zuletzt aktualisiert: 27.03.2015 · pfuhlh

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