In this paper, the thermodynamic parameters such as Grüneisen parameters and anharmonicity are investigated utilizing pressure- and temperature-dependent Raman spectroscopy of monolayer transition-metal dichalcogenides MX2 (M = Mo, W; X = S, Se). The result indicates a good stability of these compounds in the pressure range of 0–9.0 GPa and the temperature range of 175–575 K. It is a general trend that Raman mode varies with temperature and pressure linearly for monolayer MX2, and the thermodynamic Grüneisen parameters can be determined from the temperature- and pressure-dependencies of Raman spectra. Based on these measurable parameters, anharmonic parameters are extracted for each active Raman mode. The result shows that the temperature dependencies of the phonon frequencies are well described by considering the contributions from thermal expansion and lattice anharmonicity.
Skip Nav Destination
,
,
,
,
,
Article navigation
27 February 2017
Research Article|
March 02 2017
Anharmonicity of monolayer MoS2, MoSe2, and WSe2: A Raman study under high pressure and elevated temperature Available to Purchase
Mei Yang;
Mei Yang
1National Synchrotron Radiation Laboratory,
University of Science and Technology of China
, Hefei, Anhui 230029, China
Search for other works by this author on:
Xuerui Cheng;
Xuerui Cheng
2School of Physics and Electronic Engineering,
Zhengzhou University of Light Industry
, Zhengzhou, Henan 450002, China
Search for other works by this author on:
Yuanyuan Li
;
Yuanyuan Li
1National Synchrotron Radiation Laboratory,
University of Science and Technology of China
, Hefei, Anhui 230029, China
Search for other works by this author on:
Yufen Ren;
Yufen Ren
2School of Physics and Electronic Engineering,
Zhengzhou University of Light Industry
, Zhengzhou, Henan 450002, China
Search for other works by this author on:
Miao Liu
;
Miao Liu
3Energy Technologies Area,
Lawrence Berkeley National Laboratory
, Berkeley, California 94720, USA
Search for other works by this author on:
Mei Yang
1
Xuerui Cheng
2
Yuanyuan Li
1
Yufen Ren
2
Miao Liu
3
Zeming Qi
1,a)
1National Synchrotron Radiation Laboratory,
University of Science and Technology of China
, Hefei, Anhui 230029, China
2School of Physics and Electronic Engineering,
Zhengzhou University of Light Industry
, Zhengzhou, Henan 450002, China
3Energy Technologies Area,
Lawrence Berkeley National Laboratory
, Berkeley, California 94720, USA
a)
Author to whom correspondence should be addressed. Electronic mail: [email protected]
Appl. Phys. Lett. 110, 093108 (2017)
Article history
Received:
December 03 2016
Accepted:
February 17 2017
Citation
Mei Yang, Xuerui Cheng, Yuanyuan Li, Yufen Ren, Miao Liu, Zeming Qi; Anharmonicity of monolayer MoS2, MoSe2, and WSe2: A Raman study under high pressure and elevated temperature. Appl. Phys. Lett. 27 February 2017; 110 (9): 093108. https://doi.org/10.1063/1.4977877
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
Attosecond physics and technology
O. Alexander, D. Ayuso, et al.
Significant improvement of breakdown voltage of Al0.86Ga0.14N Schottky barrier diodes by atomic layer etching
Tingang Liu, Zhiyuan Liu, et al.
Roadmap on photonic metasurfaces
Sebastian A. Schulz, Rupert. F. Oulton, et al.
Related Content
Materials properties of out-of-plane heterostructures of MoS2-WSe2 and WS2-MoSe2
Appl. Phys. Lett. (February 2016)
A singular paramagnetic susceptibility peak in a WSe2/MoSe2 chemical bonding structure
Appl. Phys. Lett. (August 2022)
A WSe2/MoSe2 heterostructure photovoltaic device
Appl. Phys. Lett. (September 2015)
Nano-optical imaging of monolayer MoSe2-WSe2 lateral heterostructure with subwavelength domains
J. Vac. Sci. Technol. A (July 2018)
Optical constants and dynamic conductivities of single layer MoS2, MoSe2, and WSe2
Appl. Phys. Lett. (August 2015)