Raman Spectroscopy of Two-Dimensional Borophene Sheets

ACS Nano ◽  
2019 ◽  
Vol 13 (4) ◽  
pp. 4133-4139 ◽  
Author(s):  
Shaoxiang Sheng ◽  
Jiang-Bin Wu ◽  
Xin Cong ◽  
Qing Zhong ◽  
Wenbin Li ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Two Dimensional

scholarly journals Study of Thermometry in Two-Dimensional Sb2Te3 from Temperature-Dependent Raman Spectroscopy

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Manavendra P. Singh ◽  
Manab Mandal ◽  
K. Sethupathi ◽  
M. S. Ramachandra Rao ◽  
Pramoda K. Nayak
Keyword(s):  
Thermal Conductivity ◽  
Raman Spectroscopy ◽  
Temperature Coefficient ◽  
Heat Dissipation ◽  
Peak Position ◽  
Two Dimensional ◽  
Phonon Modes ◽  
Temperature Dependent ◽  
Excellent Candidate ◽  
High Figure

AbstractDiscovery of two-dimensional (2D) topological insulators (TIs) demonstrates tremendous potential in the field of thermoelectric since the last decade. Here, we have synthesized 2D TI, Sb2Te3 of various thicknesses in the range 65–400 nm using mechanical exfoliation and studied temperature coefficient in the range 100–300 K using micro-Raman spectroscopy. The temperature dependence of the peak position and line width of phonon modes have been analyzed to determine the temperature coefficient, which is found to be in the order of 10–2 cm−1/K, and it decreases with a decrease in Sb2Te3 thickness. Such low-temperature coefficient would favor to achieve a high figure of merit (ZT) and pave the way to use this material as an excellent candidate for thermoelectric materials. We have estimated the thermal conductivity of Sb2Te3 flake with the thickness of 115 nm supported on 300-nm SiO2/Si substrate which is found to be ~ 10 W/m–K. The slightly higher thermal conductivity value suggests that the supporting substrate significantly affects the heat dissipation of the Sb2Te3 flake.

Studying 2D Materials with Advanced Raman Spectroscopy: CARS, SRS and TERS

2021 ◽  
Author(s):  
L Malard ◽  
Lucas Lafetá ◽  
Renan Cunha ◽  
Rafael Nadas ◽  
Andreij Gadelha ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Spatial Resolution ◽  
2D Materials ◽  
2D Systems ◽  
Weak Signal ◽  
Two Dimensional ◽  
Signal Response

Raman spectroscopy is established as a valuable tool to study and characterize two-dimensional (2D) systems, but it exhibits two drawbacks: a relatively weak signal response and a limited spatial resolution....

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

Two-Dimensional Raman Spectroscopy of Vibrational Interactions in Liquids

1997 ◽  
Vol 79 (14) ◽  
pp. 2702-2705 ◽  
Author(s):  
A. Tokmakoff ◽  
M. J. Lang ◽  
D. S. Larsen ◽  
G. R. Fleming ◽  
V. Chernyak ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Two Dimensional
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