Publication detail

Neutral and charged dark excitons in monolayer WS2

Zinkiewicz, M. Slobodeniuk, AO. Kazimierczuk, T. Kapuscinski, P. Oreszczuk, K. Grzeszczyk, M Bartos, M. Nogajewski, K. Watanabe, K. Taniguchi, T. Faugeras, C. Kossacki, P. Potemski, M. Babinski, A. Molas, MR.

Original Title

Neutral and charged dark excitons in monolayer WS2

Type

journal article in Web of Science

Language

English

Original Abstract

Low temperature and polarization resolved magneto-photoluminescence experiments are used to investigate the properties of dark excitons and dark trions in a monolayer of WS(2)encapsulated in hexagonal BN (hBN). We find that this system is an n-type doped semiconductor and that dark trions dominate the emission spectrum. In line with previous studies on WSe2, we identify the Coulomb exchange interaction coupled neutral dark and grey excitons through their polarization properties, while an analogous effect is not observed for dark trions. Applying the magnetic field in both perpendicular and parallel configurations with respect to the monolayer plane, we determine theg-factor of dark trions to beg similar to -8.6. Their decay rate is close to 0.5 ns, more than 2 orders of magnitude longer than that of bright excitons.

Keywords

magneto-photoluminescence, monolayer of WS(2)

Authors

Zinkiewicz, M.; Slobodeniuk, AO.; Kazimierczuk, T.; Kapuscinski, P.; Oreszczuk, K.; Grzeszczyk, M; Bartos, M.; Nogajewski, K.; Watanabe, K.; Taniguchi, T.; Faugeras, C.; Kossacki, P.; Potemski, M.; Babinski, A.; Molas, MR.

Released

21. 9. 2020

Publisher

ROYAL SOC CHEMISTRY

Location

CAMBRIDGE

ISBN

2040-3372

Periodical

Nanoscale

Year of study

12

Number

35

State

United Kingdom of Great Britain and Northern Ireland

Pages from

18153

Pages to

18159

Pages count

7

URL

https://pubs.rsc.org/en/content/articlehtml/2020/nr/d0nr04243a

BibTex

@article{BUT166155,
  author="Zinkiewicz, M. and Slobodeniuk, AO. and Kazimierczuk, T. and Kapuscinski, P. and Oreszczuk, K. and Grzeszczyk, M and Bartos, M. and Nogajewski, K. and Watanabe, K. and Taniguchi, T. and Faugeras, C. and Kossacki, P. and Potemski, M. and Babinski, A. and Molas, MR.",
  title="Neutral and charged dark excitons in monolayer WS2",
  journal="Nanoscale",
  year="2020",
  volume="12",
  number="35",
  pages="18153--18159",
  doi="10.1039/d0nr04243a",
  issn="2040-3372",
  url="https://pubs.rsc.org/en/content/articlehtml/2020/nr/d0nr04243a"
}