scholarly journals Interlayer Difference of Bilayer-Stacked MoS2 Structure: Probing by Photoluminescence and Raman Spectroscopy

Nanomaterials ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 796 ◽  
Author(s):  
Xiangzhe Zhang ◽  
Renyan Zhang ◽  
Xiaoming Zheng ◽  
Yi Zhang ◽  
Xueao Zhang ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Bottom Layer ◽  
Spatial Inhomogeneity ◽  
Bilayer Structure ◽  
Two Dimensional ◽  
Substrate Interaction ◽  
Structure Probing ◽  
Two Dimensional Materials ◽  
Film Substrate ◽  
Insight Into

This work reports the interlayer difference of exciton and phonon performance between the top and bottom layer of a bilayer-stacked two-dimensional materials structure (BSS). Through photoluminescence (PL) and Raman spectroscopy, we find that, compared to that of the bottom layer, the top layer of BSS demonstrates PL redshift, Raman E 2 g 1 mode redshift, and lower PL intensity. Spatial inhomogeneity of PL and Raman are also observed in the BSS. Based on theoretical analysis, these exotic effects can be attributed to substrate-coupling-induced strain and doping. Our findings provide pertinent insight into film–substrate interaction, and are of great significance to researches on bilayer-stacked structures including twisted bilayer structure, Van der Waals hetero- and homo-structure.

Raman spectroscopy characterization of two-dimensional materials

2018 ◽  
Vol 27 (3) ◽  
pp. 037802 ◽  
Author(s):  
Fang Liang ◽  
Hejun Xu ◽  
Xing Wu ◽  
Chaolun Wang ◽  
Chen Luo ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Two Dimensional ◽  
Two Dimensional Materials

Applications of Raman spectroscopy in two-dimensional materials

2020 ◽  
Vol 13 (05) ◽  
pp. 2030010 ◽  
Author(s):  
Pengkun Yin ◽  
Qingyu Lin ◽  
Yixiang Duan
Keyword(s):  
Raman Spectroscopy ◽  
Type Strain ◽  
2D Materials ◽  
Interlayer Coupling ◽  
Two Dimensional ◽  
Physical Chemical ◽  
Two Dimensional Materials ◽  
Application Potential ◽  
Advanced Applications ◽  
Doping Type

At present, two-dimensional (2D) materials have shown great application potential in numerous fields based on their physical chemical and electronic properties. Raman spectroscopy and derivative techniques are effective tools for characterizing 2D materials. Raman spectroscopy conveys lots of knowledge on 2D materials, including layer number, doping type, strain and interlayer coupling. This review summarized advanced applications of Raman spectroscopy in 2D materials. The challenges and possible applied directions of Raman spectroscopy to 2D materials are discussed in detail.

Sign in / Sign up

Export Citation Format

Share Document