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Exciton-exciton annihilation in MoSe2monolayers
Open accessAbstract
We investigate the excitonic dynamics in MoSe${}_{2}$ monolayer and bulk samples by femtosecond transient absorption. Excitons are resonantly injected by a 750-nm and 100-fs laser pulse, and are detected by measuring a differential reflection of a probe pulse tuned in the range 790--820 nm. We observe a strong density-dependent initial decay of the exciton population in monolayers, which can be well described by the exciton-exciton annihilation. Such a feature is not observed in a bulk sample under comparable conditions. We also observe the saturated absorption induced by excitons in both monolayers and the bulk in the differential reflection measurements, which indicates their potential applications as saturable absorbers.
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Electronics and optoelectronics of two-dimensional transition metal dichalcogenides
Wang, Q. H., Kalantar-Zadeh, K., Kis, A., Coleman, J. N., & Strano, M. S. (2012) · Nature Nanotechnology · doi:10.1038/nnano.2012.193 · Cited by 16,374
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Xu, X., Yao, W., Xiao, D., & Heinz, T. F. (2014) · Nature Physics · doi:10.1038/nphys2942 · Cited by 2,855
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 Rapid Exciton–Exciton Annihilation in Monolayer Molybdenum Disulfide
Sun, D., Rao, Y., Reider, G. A., Chen, G., You, Y., Brézin, L., Harutyunyan, A. R., & Heinz, T. F. (2014) · Nano Letters · doi:10.1021/nl5021975 · Cited by 579
Photocarrier relaxation pathway in two-dimensional semiconducting transition metal dichalcogenides
Kozawa, D., Kumar, R., Carvalho, A., Kumar Amara, K., Zhao, W., Wang, S., Toh, M., Ribeiro, R. M., Castro Neto, A. H., Matsuda, K., et al. (2014) · Nature Communications · doi:10.1038/ncomms5543 · Cited by 477
Zheng, Q., Chu, W., Zhao, C., Zhang, L., Guo, H., Wang, Y., Jiang, X., & Zhao, J. (2019) · WIREs Computational Molecular Science · doi:10.1002/wcms.1411 · Cited by 452
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Metadata
- Authors
- Kumar, N., Cui, Q., Ceballos, F., He, D., Wang, Y., & Zhao, H.
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 2014-03-24
- Volume
- 89
- Issue
- 12
- ISSN
- 1098-0121 (ISSN-L)
- 1550-235X
- OpenAlex
- W2069635547
- Cited by
- 382
- References
- 1
- FWCI
- 14.44
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Kumar, N., Cui, Q., Ceballos, F., He, D., Wang, Y., & Zhao, H. (2014). Exciton-exciton annihilation in MoSe2monolayers. Physical Review B. https://doi.org/10.1103/physrevb.89.125427
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