Abstract
We systematically study the effect of high pressure on the structure, electronic structure, and transport properties of 2H-MoS2, based on first-principles density functional calculations and the Boltzmann transport theory. Our calculation shows a vanishing anisotropy in the rate of structural change at around 25 GPa, in agreement with the experimental data. A conversion from van der Waals to covalent-like bonding is seen. Concurrently, a transition from semiconductor to metal occurs at 25 GPa from band structure calculation. Our transport calculations also find pressure-enhanced electrical conductivities and significant values of the thermoelectric figure of merit over a wide temperature range. Our study supplies a new route to improve the thermoelectric performance of MoS2 and of other transition metal dichalcogenides by applying hydrostatic pressure.
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Dates
Type | When |
---|---|
Created | 12 years, 7 months ago (Jan. 4, 2013, 7:26 a.m.) |
Deposited | 2 years, 2 months ago (June 23, 2023, 3:01 a.m.) |
Indexed | 12 hours, 48 minutes ago (Aug. 23, 2025, 1:08 a.m.) |
Issued | 12 years, 7 months ago (Jan. 3, 2013) |
Published | 12 years, 7 months ago (Jan. 3, 2013) |
Published Online | 12 years, 7 months ago (Jan. 3, 2013) |
Published Print | 12 years, 7 months ago (Jan. 7, 2013) |
Funders
1
National Natural Science Foundation of China
10.13039/501100001809
Region: Asia
gov (National government)
Labels
11
- Chinese National Science Foundation
- Natural Science Foundation of China
- National Science Foundation of China
- NNSF of China
- NSF of China
- 国家自然科学基金委员会
- National Nature Science Foundation of China
- Guójiā Zìrán Kēxué Jījīn Wěiyuánhuì
- NSFC
- NNSF
- NNSFC
Awards
2
- 50831006
- 11004201
@article{Guo_2013, title={High pressure effect on structure, electronic structure, and thermoelectric properties of MoS2}, volume={113}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.4772616}, DOI={10.1063/1.4772616}, number={1}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Guo, Huaihong and Yang, Teng and Tao, Peng and Wang, Yong and Zhang, Zhidong}, year={2013}, month=jan }