Observation of Excitonic Rydberg States in Monolayer MoS2 and WS2 by Photoluminescence Excitation Spectroscopy

Hill, Heather M.; Rigosi, Albert F.; Roquelet, Cyrielle; Chernikov, Alexey; Berkelbach, Timothy C.; Reichman, David R.; Hybertsen, Mark S.; Brus, Louis E.; Heinz, Tony F.

doi:10.1021/nl504868p

Observation of Excitonic Rydberg States in Monolayer MoS₂ and WS₂ by Photoluminescence Excitation Spectroscopy

Journal Article · Fri Mar 27 00:00:00 EDT 2015 · Nano Letters

DOI:https://doi.org/10.1021/nl504868p· OSTI ID:1370381

Hill, Heather M. ^[1]; Rigosi, Albert F. ^[1]; Roquelet, Cyrielle ^[1]; Chernikov, Alexey ^[1]; Berkelbach, Timothy C. ^[1]; Reichman, David R. ^[1]; Hybertsen, Mark S. ^[2]; Brus, Louis E. ^[1]; Heinz, Tony F. ^[1]

Columbia Univ., New York, NY (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)

Here, we have identified excited exciton states in monolayers of MoS₂ and WS₂ supported on fused silica by means of photoluminescence excitation spectroscopy. In monolayer WS₂, the positions of the excited A exciton states imply an exciton binding energy of 0.32 eV. In monolayer MoS₂, excited exciton transitions are observed at energies of 2.24 and 2.34 eV. Assigning these states to the B exciton Rydberg series yields an exciton binding energy of 0.44 eV.

View Accepted Manuscript (DOE)

Research Organization:: Energy Frontier Research Centers (EFRC) (United States). Re-Defining Photovoltaic Efficiency Through Molecule Scale Control (RPEMSC)

Sponsoring Organization:: Alexander von Humboldt Foundation; Feodor Lynen Research Fellowship; Keck Foundation; National Science Foundation; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Chemical Sciences, Geosciences & Biosciences Division

Grant/Contract Number:: AC02-98CH10886; AC05-06OR23100; SC0001085

OSTI ID:: 1370381

Journal Information:: Nano Letters, Journal Name: Nano Letters Journal Issue: 5 Vol. 15; ISSN 1530-6984

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Binding energies of exciton complexes in transition metal dichalcogenides and effect of dielectric environment Kylänpää, Ilkka; Komsa, Hannu-Pekka arXiv https://doi.org/10.48550/arxiv.1508.06737	text	January 2015
Theoretical investigation of electron-hole complexes in anisotropic two-dimensional materials Chaves, Andrey; Mayers, M. Z.; Peeters, F. M. arXiv https://doi.org/10.48550/arxiv.1603.01588	text	January 2016
Nonequilibrium Carrier Dynamics in Transition Metal Dichalcogenide Semiconductors Steinhoff, Alexander; Florian, Matthias; Rösner, Malte arXiv https://doi.org/10.48550/arxiv.1603.03633	text	January 2016
Onset of exciton-exciton annihilation in single layer black phosphorus Surrente, A.; Mitioglu, A. A.; Galkowski, K. arXiv https://doi.org/10.48550/arxiv.1605.06998	text	January 2016
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Model Prediction of Self-Rotating Excitons in Two-Dimensional Transition-Metal Dichalcogenides Trushin, Maxim; Goerbig, Mark Oliver; Belzig, Wolfgang arXiv https://doi.org/10.48550/arxiv.1708.03638	text	January 2017
Exciton Relaxation Cascade in Two-dimensional Transition-metal dichalcogenides Brem, Samuel; Berghaeuser, Gunnar; Selig, Malte arXiv https://doi.org/10.48550/arxiv.1712.04808	text	January 2017
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Defect-induced modification of low-lying excitons and valley selectivity in monolayer transition metal dichalcogenides Refaely-Abramson, Sivan; Qiu, Diana Y.; Louie, Steven G. arXiv https://doi.org/10.48550/arxiv.1804.05719	text	January 2018
Fundamental exciton linewidth broadening in monolayer transition metal dichalcogenides Gupta, Garima; Majumdar, Kausik arXiv https://doi.org/10.48550/arxiv.1901.04391	text	January 2019
Intrinsic Lifetime of Higher Excitonic States in Tungsten Diselenide Monolayers Brem, Samuel; Zipfel, Jonas; Selig, Malte arXiv https://doi.org/10.48550/arxiv.1904.04729	text	January 2019
Hybrid MoS$_2$-gap-mode metasurfaces photodetectors Ni, Peinan; Bugallo, Andres De Luna; Yang, Xun arXiv https://doi.org/10.48550/arxiv.1907.06505	text	January 2019
Exciton broadening in WS2 /graphene heterostructures Hill, Heather M.; Rigosi, Albert F.; Raja, Archana Universität Regensburg https://doi.org/10.5283/epub.40515	text	January 2017
Colloquium : Excitons in atomically thin transition metal dichalcogenides Wang, Gang; Chernikov, Alexey; Glazov, Mikhail M. Universität Regensburg https://doi.org/10.5283/epub.40518	text	January 2018

Figures / Tables (3)

Figure 1(p. 5)

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Figure 3(p. 9)

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Related Subjects

2D materials
36 MATERIALS SCIENCE
binding energy
energy
excitons
molybdenum disulfide
monolayers
phase transitions
transition metal dichalcogenides
tungsten disulfide