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

Title: 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.

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

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

Grant/Contract Number:: SC0001085; DMR-1122594; DGE-1069240; AC02-98CH10886; AC05-06OR23100

OSTI ID:: 1370381

Journal Information:: Nano Letters, Vol. 15, Issue 5; Related Information: RPEMSC partners with Columbia University (lead); Brookhaven National Laboratory; Purdue University; ISSN 1530-6984

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 280 works

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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
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Cascaded exciton energy transfer in a monolayer semiconductor lateral heterostructure assisted by surface plasmon polariton Shi, Jinwei; Lin, Meng-Hsien; Chen, I-Tung Nature Communications, Vol. 8, Issue 1 https://doi.org/10.1038/s41467-017-00048-y	journal	June 2017

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36 MATERIALS SCIENCE
transition metal dichalcogenides
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binding energy
excitons
monolayers
energy
phase transitions

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

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