Quantum optical emissions from defects in 2D materials

Shengxi Huang

doi:10.1117/12.3009008

13 March 2024 Quantum optical emissions from defects in 2D materials

Shengxi Huang

Proceedings Volume PC12849, Single Molecule Spectroscopy and Superresolution Imaging XVII; PC1284909 (2024) https://doi.org/10.1117/12.3009008
Event: SPIE BiOS, 2024, San Francisco, California, United States

Abstract

Defect engineering of 2D materials offers enormous opportunities to tune material properties. This presentation will show two types of substitutional defects in 2D materials, self-limited along the out-of-plane and in-plane directions, respectively. The first type is atomic substitution: a nitrogen atom substituting a chalcogen atom in 2D transition metal dichalcogenides (TMDs), which yields new distinct photoluminescence features well separated from the free excitons of 2D TMDs. The second type is layer substitution: an entire layer of chalcogen atoms in 2D TMD substituted by another type of chalcogen atoms, namely, Janus TMDs. Due to the intrinsic vertical dipole, Janus TMDs form unconventional interaction with adjacent materials including other 2D material layers. These unconventional interactions were probed by optical signature changes such as ultra-low frequency Raman modes and photoluminescence yield change. Engineering such substitutional defects in 2D materials promises potential for optoelectronic devices and quantum information platforms.

Conference Presentation

Citation Download Citation

Shengxi Huang "Quantum optical emissions from defects in 2D materials", Proc. SPIE PC12849, Single Molecule Spectroscopy and Superresolution Imaging XVII, PC1284909 (13 March 2024); https://doi.org/10.1117/12.3009008

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