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Observation of Rapid Exciton–Exciton Annihilation in Monolayer Molybdenum Disulfide
Abstract
Monolayer MoS2 is a direct-gap two-dimensional semiconductor that exhibits strong electron-hole interactions, leading to the formation of stable excitons and trions. Here we report the existence of efficient exciton-exciton annihilation, a four-body interaction, in this material. Exciton-exciton annihilation was identified experimentally in ultrafast transient absorption measurements through the emergence of a decay channel varying quadratically with exciton density. The rate of exciton-exciton annihilation was determined to be (4.3 ± 1.1) × 10(-2) cm(2)/s at room temperature.
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Cited by
Schaibley, J. R., Yu, H., Clark, G., Rivera, P., Ross, J. S., Seyler, K. L., Yao, W., & Xu, X. (2016) · Nature Reviews Materials · doi:10.1038/natrevmats.2016.55 · Cited by 2,652
Observation of Exciton–Exciton Interaction Mediated Valley Depolarization in Monolayer MoSe2
Mahmood, F., Alpichshev, Z., Lee, Y.-H., Kong, J., & Gedik, N. (2018) · Nano Letters · doi:10.1021/acs.nanolett.7b03953 · Cited by 60
Metadata
- Authors
- Sun, D., Rao, Y., Reider, G. A., Chen, G., You, Y., Brézin, L., Harutyunyan, A. R., & Heinz, T. F.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2014-09-09
- Volume
- 14
- Issue
- 10
- Pages
- 5625-5629
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2245441081
- Cited by
- 579
- References
- 32
- FWCI
- 18.46
- Type
- journal article
- Language
- en
- Open access
- closed
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