Abstract
Anti‐Stokes photoluminescence excitation of a WS2 monolayer flake between 10 and 300 K is reported herein. Even with continuous‐wave lasers at low power, the emission of the exciton at excitation 100 meV below its emission energy at room temperature is observed. A mechanism which involves the trions as the intermediate state is proposed, leading to an efficient up‐conversion process. In addition, it is demonstrated that phonons are the source of the additional energy needed by the system. Overall, the results provide evidence that anti‐Stokes luminescence in transition metal dichalcogenides is very efficient.
Authors
3
- Aurélie Pierret (first)
- Hans Tornatzky (additional)
- Janina Maultzsch (additional)
References
25
Referenced
7
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{'key': 'e_1_2_6_20_1', 'first-page': '1', 'volume': '115', 'author': 'Zhang X. X.', 'year': '2015', 'journal-title': 'Phys. Rev. Lett.'}
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Dates
Type | When |
---|---|
Created | 5 years, 10 months ago (Sept. 28, 2019, 4:22 a.m.) |
Deposited | 1 year, 11 months ago (Sept. 6, 2023, 2:26 p.m.) |
Indexed | 3 weeks, 4 days ago (July 30, 2025, 6:07 a.m.) |
Issued | 5 years, 10 months ago (Oct. 9, 2019) |
Published | 5 years, 10 months ago (Oct. 9, 2019) |
Published Online | 5 years, 10 months ago (Oct. 9, 2019) |
Published Print | 5 years, 8 months ago (Dec. 1, 2019) |
Funders
2
European Research Council
10.13039/501100000781
Region: Europe
gov (National government)
Labels
1
- ERC
Awards
1
- 259286
Deutsche Forschungsgemeinschaft
10.13039/501100001659
Region: Europe
gov (National government)
Labels
3
- German Research Association
- German Research Foundation
- DFG
Awards
2
- SFB 787
- EXC 315
@article{Pierret_2019, title={Anti‐Stokes Photoluminescence of Monolayer WS2}, volume={256}, ISSN={1521-3951}, url={http://dx.doi.org/10.1002/pssb.201900419}, DOI={10.1002/pssb.201900419}, number={12}, journal={physica status solidi (b)}, publisher={Wiley}, author={Pierret, Aurélie and Tornatzky, Hans and Maultzsch, Janina}, year={2019}, month=oct }