Optical Non-Linearity and Exciton Studies in novel 2D Janus Transition Metal Dichalcogenide and (Moire) heterostructures
Abstract
Janus 2D transition metal dichalcogenide (TMD) materials have attracted enormous interests due to their unique structure and properties. Tremendous theoretical speculations have been put forward based on the broken out-of-plane symmetry, intrinsic vertical dipole, and strain in the lattice, etc, which strongly motivate the need for obtaining these materials. During the past few years, our MIT group has developed an atomic-layer substitution (ALS) method which converts typical (Mo- and W-based) monolayer TMD materials into Janus TMD at room temperature (RT). This enables not only the study of these Janus monolayers but also the facile assembly of the heterostructures based on the Janus and normal TMD monolayers. The central question is, will such Janus monolayers and their heterostructures exhibit the unique properties as promised. In this proposed project, our two groups (MIT and Taiwan) aim to carry out a systematic study on the nonlinear optical properties and excitonic behaviors of the Janus monolayers and heterostructures. Our studies will not only help to advance the knowledge and understanding of these novel structures but will help to discover and develop their potential applications for optoelectronic devices, optical communication, and quantum technologies.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 05, 2025
- Source ID
- FA23862414049
Entities
People
- Jing Kong
Organizations
- Air Force Office of Scientific Research
- Massachusetts Institute of Technology
- United States Air Force