Standard

Observation of Room-Temperature Dark Exciton Emission in Nanopatch-Decorated Monolayer WSe2 on Metal Substrate. / Rahaman, Mahfujur; Selyshchev, Oleksandr; Pan, Yang et al.

In: Advanced Optical Materials, Vol. 9, No. 24, 01.12.2021.

Research output: Contribution to journal › Article › peer-review

Harvard

Rahaman, M, Selyshchev, O, Pan, Y, Schwartz, R, Milekhin, I, Sharma, A, Salvan, G, Gemming, S, Korn, T & Zahn, DRT 2021, 'Observation of Room-Temperature Dark Exciton Emission in Nanopatch-Decorated Monolayer WSe2 on Metal Substrate', Advanced Optical Materials, vol. 9, no. 24. https://doi.org/10.1002/adom.202101801

APA

Rahaman, M., Selyshchev, O., Pan, Y., Schwartz, R., Milekhin, I., Sharma, A., Salvan, G., Gemming, S., Korn, T., & Zahn, D. R. T. (2021). Observation of Room-Temperature Dark Exciton Emission in Nanopatch-Decorated Monolayer WSe2 on Metal Substrate. Advanced Optical Materials, 9(24). https://doi.org/10.1002/adom.202101801

Vancouver

Rahaman M, Selyshchev O, Pan Y, Schwartz R, Milekhin I, Sharma A et al. Observation of Room-Temperature Dark Exciton Emission in Nanopatch-Decorated Monolayer WSe2 on Metal Substrate. Advanced Optical Materials. 2021 Dec 1;9(24). doi: 10.1002/adom.202101801

Author

Rahaman, Mahfujur ; Selyshchev, Oleksandr ; Pan, Yang et al. / Observation of Room-Temperature Dark Exciton Emission in Nanopatch-Decorated Monolayer WSe2 on Metal Substrate. In: Advanced Optical Materials. 2021 ; Vol. 9, No. 24.

BibTeX

@article{921f6a40cc0348a3927da411d3a92b34,
title = "Observation of Room-Temperature Dark Exciton Emission in Nanopatch-Decorated Monolayer WSe2 on Metal Substrate",
abstract = "The presence of strong spin–orbit coupling in the valence band and weak spin-splitting in the conduction band result in the lowest energy exciton in WX2 (X = S, Se) being spin forbidden and optically dark. Because of their long lifetimes, dark excitons are highly attractive for quantum optics and optoelectronic applications. To date, studying dark excitonic emissions is limited to cryogenic temperatures or requires very complex experimental configurations to observe them at room temperature (RT). Here, the radiative decay of dark exciton related emission in WSe2 monolayers is studied using both conventional and tip-enhanced photoluminescence (TEPL) at RT. Monolayer WSe2 flakes are sandwiched between noble metal substrates and polydimethylsiloxane nanopatches providing a strong local electrostatic out-of-plane dipole moment with respect to the 2D plane resulting in the observation of dark excitonic emission at RT. The spatial distribution of this dark exciton related emission is studied by TEPL with a spatial resolution of ",
keywords = "TEPL, TERS, WSe 2, dark and bright excitons, photoluminescence, transition metal dichalcogenides, valley physics",
author = "Mahfujur Rahaman and Oleksandr Selyshchev and Yang Pan and Rico Schwartz and Ilya Milekhin and Apoorva Sharma and Georgeta Salvan and Sibylle Gemming and Tobias Korn and Zahn, {Dietrich R.T.}",
year = "2021",
month = dec,
day = "1",
doi = "10.1002/adom.202101801",
language = "русский",
volume = "9",
journal = "Advanced Optical Materials",
issn = "2195-1071",
publisher = "John Wiley and Sons Inc.",
number = "24",

}

RIS

TY - JOUR

T1 - Observation of Room-Temperature Dark Exciton Emission in Nanopatch-Decorated Monolayer WSe2 on Metal Substrate

AU - Rahaman, Mahfujur

AU - Selyshchev, Oleksandr

AU - Pan, Yang

AU - Schwartz, Rico

AU - Milekhin, Ilya

AU - Sharma, Apoorva

AU - Salvan, Georgeta

AU - Gemming, Sibylle

AU - Korn, Tobias

AU - Zahn, Dietrich R.T.

PY - 2021/12/1

Y1 - 2021/12/1

N2 - The presence of strong spin–orbit coupling in the valence band and weak spin-splitting in the conduction band result in the lowest energy exciton in WX2 (X = S, Se) being spin forbidden and optically dark. Because of their long lifetimes, dark excitons are highly attractive for quantum optics and optoelectronic applications. To date, studying dark excitonic emissions is limited to cryogenic temperatures or requires very complex experimental configurations to observe them at room temperature (RT). Here, the radiative decay of dark exciton related emission in WSe2 monolayers is studied using both conventional and tip-enhanced photoluminescence (TEPL) at RT. Monolayer WSe2 flakes are sandwiched between noble metal substrates and polydimethylsiloxane nanopatches providing a strong local electrostatic out-of-plane dipole moment with respect to the 2D plane resulting in the observation of dark excitonic emission at RT. The spatial distribution of this dark exciton related emission is studied by TEPL with a spatial resolution of

AB - The presence of strong spin–orbit coupling in the valence band and weak spin-splitting in the conduction band result in the lowest energy exciton in WX2 (X = S, Se) being spin forbidden and optically dark. Because of their long lifetimes, dark excitons are highly attractive for quantum optics and optoelectronic applications. To date, studying dark excitonic emissions is limited to cryogenic temperatures or requires very complex experimental configurations to observe them at room temperature (RT). Here, the radiative decay of dark exciton related emission in WSe2 monolayers is studied using both conventional and tip-enhanced photoluminescence (TEPL) at RT. Monolayer WSe2 flakes are sandwiched between noble metal substrates and polydimethylsiloxane nanopatches providing a strong local electrostatic out-of-plane dipole moment with respect to the 2D plane resulting in the observation of dark excitonic emission at RT. The spatial distribution of this dark exciton related emission is studied by TEPL with a spatial resolution of

KW - TEPL, TERS

KW - WSe 2

KW - dark and bright excitons

KW - photoluminescence

KW - transition metal dichalcogenides

KW - valley physics

UR - https://www.mendeley.com/catalogue/321ea36d-e04a-33f8-883c-7c00866db01f/

U2 - 10.1002/adom.202101801

DO - 10.1002/adom.202101801

M3 - статья

VL - 9

JO - Advanced Optical Materials

JF - Advanced Optical Materials

SN - 2195-1071

IS - 24

ER -

ID: 43510481