Detail publikačního výsledku

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.

Originální název

Neutral and charged dark excitons in monolayer WS2

Anglický název

Neutral and charged dark excitons in monolayer WS2

Druh

Článek WoS

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

magneto-photoluminescence, monolayer of WS(2)

Klíčová slova v angličtině

magneto-photoluminescence, monolayer of WS(2)

Autoři

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.

Rok RIV

2021

Vydáno

21.09.2020

Nakladatel

ROYAL SOC CHEMISTRY

Místo

CAMBRIDGE

ISSN

2040-3372

Periodikum

Nanoscale

Svazek

12

Číslo

35

Stát

Spojené království Velké Británie a Severního Irska

Strany od

18153

Strany do

18159

Strany počet

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="2040-3364",
  url="https://pubs.rsc.org/en/content/articlehtml/2020/nr/d0nr04243a"
}