Regensburg 2022 – wissenschaftliches Programm
HL 6.2: Vortrag
Montag, 5. September 2022, 10:00–10:15, H36
Optical Properties of Encapsulated Transition-Metal Dichalcogenide Monolayers, Bilayers, and Heterostructures — •Manan Shah1, Philip Klement1, Sangam Chatterjee1, Kyungnam Kang2, Eui-Hyeok Yang2, and Arash Rahimi-Iman1 — 1I. Physikalisches Institut und Zentrum für Materialwissenschaften, Justus-Liebig Universität Gießen, D-35392, Germany — 2Department of Mechanical Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
Van-der-Waals heterostructures (vdW-HSs) based on 2D-layered materials have received unrivaled attention among nanomaterials due to their promising optoelectronic properties induced by moiré potential landscapes; secondly, their strong light-matter interactions; and third, the promise of bandgap engineering capabilities. The optical properties of transition-metal dichalcogenides (TMDs) depend considerably on the substrate, stacking configuration, interface quality, and encapsulation. As more and more layered materials have come into the focus, the demand for a comprehensive understanding of their optical, optoelectronic, and vibronic properties is increasing drastically.
We focus on the discussion of photoluminescence and the Raman response of tungsten-based TMD monolayers and stacks thereof [1, 2], as well as encapsulated configurations. We further aim at unraveling structural alterations and emission properties by monitoring the temporal behavior in their responses.  Semiconductors 2019, 53, 2140.  Sci. Rep. 2022, 12, 6939.