Fingerprinting the Properties of WS2 Nanostructures using Advanced Transmission Electron Microscopy Techniques
From Growth to Characterization
S.E. Van Heijst (TU Delft - QN/Conesa-Boj Lab)
S. Boj – Promotor (TU Delft - QN/Conesa-Boj Lab)
L. Kuipers – Promotor (TU Delft - QN/Quantum Nanoscience)
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Abstract
Two-dimensional
(2D) layered materials have attracted the interest of the scientific community
following the discovery of graphene and its extraordinary properties. Of
particular interest is a class of materials called transition metal dichalcogenides
(TMDs). The materials within this class were discovered to show similarly
intriguing optical and electronic properties, when compared to graphene. Moreover,
research indicated that these properties are also highly sensitive to the TMDs'
underlying atomic structure. Gaining control over these structural properties
would enable the tuning of the physical and chemical properties, and hence
allow for the fabrication of novel TMD nanostructures with tailored
functionalities. Driven by this potential, we strive to gain a comprehensive
understanding of the relationship between the structural, chemical, and local
electronic properties of nanostructures based on one such TMD material:
tungsten disulfide (WS2). This in order to aid us in the exploitation of the
tunability of these physical properties through the fabrication of novel WS2
nanostructures. …