|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||2018 Symposium on Functional Nanomaterials: Discovery and Integration of Nanomaterials
||M-9: In-situ Studies of Transition Metal Dichalcogenides Grown by Molecular Beam Epitaxy
||Peter Litwin, Keren Freedy, Stephen McDonnell
|On-Site Speaker (Planned)
Here we present recent work on the synthesis and characterization of two-dimensional transition metal dichalcogenides (TMDs) grown by molecular beam epitaxy. Bulk TMD crystals consist of two-dimensional layers bonded together by van der Waals interactions; the lack of primary bonds at the TMD interface allows for the growth of TMD heterostructures on a range of substrates. The quality of TMDs grown on two-dimensional, hexagonal, and cubic surfaces will be compared. TMDs are grown and characterized in an all in-vacuo ultra-high vacuum system employing x-ray photoemission spectroscopy for compositional analysis and angle resolved photoemission spectroscopy for electronic characterization. This system allows for the synthesis of TMD ternary alloys and layered heterostructures followed by the analysis of their intrinsic properties prior to atmospheric exposure. In-situ Ar+ sputtering will be employed to introduce defects into TMD thin films and their effect on the material’s electronic properties will be reported.
||Planned: Supplemental Proceedings volume