The pioneering work of Professor Reshef Tenne in the synthesis of transition metal dichalcogenide (TMD) nanostructures after the discovery of fullerenes and the carbon identification nanotubes will be reviewed. Reshef’s work was pivotal in the subsequent synthesis of two-dimensional (2D) TMDs and their applications. His work and recent work in our laboratory will be discussed. In particular, we will define the dimensionalities and different atomic structures of defects and discuss how these defects could be imaged with novel optical-driven techniques. We will emphasize doping and alloying in monolayers of MoS2, WS2, and WSe2 and describe their implications in magnetism, as well as in electronic transport. We will also describe the electronic effects of C-H defects within TMDs, as p-type doping could be controlled by the presence of C within TMDs. Finally, the catalytic effects of edges, vacancies and local strain observed in hBN and MoxW(1-x)S2 monolayers by correlating the hydrogen evolution reaction (HER) with aberration corrected scanning transmission electron microscopy (AC-HRSTEM).

Defects in 2D transition metal chalcogenides: The influence of Reshef Tenne

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ACS Spring 2023

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