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Exciton Binding Energy and Nonhydrogenic Rydberg Series in Monolayer WS2
Open accessAbstract
We have experimentally determined the energies of the ground and first four excited excitonic states of the fundamental optical transition in monolayer WS_{2}, a model system for the growing class of atomically thin two-dimensional semiconductor crystals. From the spectra, we establish a large exciton binding energy of 0.32 eV and a pronounced deviation from the usual hydrogenic Rydberg series of energy levels of the excitonic states. We explain both of these results using a microscopic theory in which the nonlocal nature of the effective dielectric screening modifies the functional form of the Coulomb interaction. These strong but unconventional electron-hole interactions are expected to be ubiquitous in atomically thin materials.
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Generalized Gradient Approximation Made Simple
Perdew, J. P., Burke, K., & Ernzerhof, M. (1996) · Physical Review Letters · doi:10.1103/physrevlett.77.3865 · Cited by 215,824
Two-dimensional atomic crystals
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Photonics and optoelectronics of 2D semiconductor transition metal dichalcogenides
Mak, K. F., & Shan, J. (2016) · Nature Photonics · doi:10.1038/nphoton.2015.282 · Cited by 3,819
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
Polaritons in layered two-dimensional materials
Low, T., Chaves, A., Caldwell, J. D., Kumar, A., Fang, N. X., Avouris, P., Heinz, T. F., Guinea, F., Martin-Moreno, L., & Koppens, F. (2017) · Nature Materials · doi:10.1038/nmat4792 · Cited by 1,317
Self-citationX-ray-activated persistent luminescence nanomaterials for NIR-II imaging
Pei, P., Chen, Y., Sun, C., Fan, Y., Yang, Y., Liu, X., Lu, L., Zhao, M., Zhang, H., Zhao, D., et al. (2021) · Nature Nanotechnology · doi:10.1038/s41565-021-00922-3 · Cited by 718
Ye, Y., Wong, Z. J., Lu, X., Ni, X., Zhu, H., Chen, X., Wang, Y., & Zhang, X. (2015) · Nature Photonics · doi:10.1038/nphoton.2015.197 · Cited by 624
Metadata
- Authors
- Chernikov, A., Berkelbach, T. C., Hill, H. M., Rigosi, A., Li, Y., Aslan, B., Reichman, D. R., Hybertsen, M. S., & Heinz, T. F.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2014-08-13
- Volume
- 113
- Issue
- 7
- Pages
- 076802-076802
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2013144732
- Cited by
- 2,546
- References
- 2
- FWCI
- 71.03
- Type
- journal article
- Language
- en
- Open access
- green
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- Chernikov, A., Berkelbach, T. C., Hill, H. M., Rigosi, A., Li, Y., Aslan, B., Reichman, D. R., Hybertsen, M. S., & Heinz, T. F. (2014). Exciton Binding Energy and Nonhydrogenic Rydberg Series in Monolayer WS2. Physical Review Letters. https://doi.org/10.1103/physrevlett.113.076802
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