Continuous modulation of monolayer MoS2 optical signals using a wedge-like substrate

Raman and PL (photoluminescence) spectroscopy are effective techniques for characterizing the physical properties of transition metal dichalcogenides (TMDCs). Modulating intensities of these optical signals is crucial for the advancement of research and the subsequent application of TMDCs. However,...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied physics 2024-12, Vol.136 (21)
Main Authors: Miao, Gesong, Xu, Xiangrui, Huang, Junjie, Lin, Gaoxiang, Xu, Yanting, Huang, Chenyi, Zhou, Yinghui, Zhang, Yufeng, Cai, Weiwei, Zhang, Xueao
Format: Article
Language:English
Subjects:
Molybdenum disulfide
Monolayers
Optical properties
Optoelectronics
Photoluminescence
Physical properties
Silicon dioxide
Silicon substrates
Transition metal compounds
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Raman and PL (photoluminescence) spectroscopy are effective techniques for characterizing the physical properties of transition metal dichalcogenides (TMDCs). Modulating intensities of these optical signals is crucial for the advancement of research and the subsequent application of TMDCs. However, it is challenging to continuously modulate optical signals' intensities. Herein, by using a wedge-like SiO2/Si substrate, the intensities of optical signals of monolayer MoS2 are enhanced continuously, which results in ~22 times and ~39 times gain in E 2 g 1 and A1g Raman mode, respectively, and a ~13 times gain in the PL intensity. The results are of significant importance for monolayer TMDCs' characterization and applications, e.g., optoelectronics.
ISSN:0021-8979
1089-7550
DOI:10.1063/5.0242549