Modulation of the vibrational and emission spectrum in 2D WSe2 through defect generation schemes

Utsab Kafley; Anirudha V. Sumant; Anupama B. Kaul

doi:10.1117/12.3013477

7 June 2024 Modulation of the vibrational and emission spectrum in 2D WSe₂ through defect generation schemes

Utsab Kafley, Anirudha V. Sumant, Anupama B. Kaul

Proceedings Volume 13028, Quantum Information Science, Sensing, and Computation XVI; 130280F (2024) https://doi.org/10.1117/12.3013477
Event: SPIE Defense + Commercial Sensing, 2024, National Harbor, Maryland, United States

Abstract

It has been shown that the optoelectronic properties of WSe₂, such as strong light absorption, high carrier mobility, and direct bandgap, make it a desirable material for a range of devices, including photodetectors, photovoltaics, and light-emitting diodes. At the same time, the physical characteristics of materials, including their electrical and optical properties, are greatly influenced by defects. The structural defects in WSe₂ have a distinctive effect on their light-matter interactions, and the ensuing performance of the devices. The prospect of utilizing these effects in cutting-edge technologies, such as quantum information and quantum optoelectronics, comes when the nature of such defects in WSe₂ is better understood and regulated through various defect generation schemes. Here, we discuss how surface modifications in mechanically-exfoliated WSe₂ crystallites through a plasma process effects the light emission properties of the crystallites, where such studies are conducted through Raman and photoluminescence spectroscopy.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Utsab Kafley, Anirudha V. Sumant, and Anupama B. Kaul "Modulation of the vibrational and emission spectrum in 2D WSe₂ through defect generation schemes", Proc. SPIE 13028, Quantum Information Science, Sensing, and Computation XVI, 130280F (7 June 2024); https://doi.org/10.1117/12.3013477

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