Detail publikace

Excitons and trions in WSSe monolayers

PUCKO, K. BLUNDO, E. ZAWADSKA, N. CIANCI,S. VÁCLAVKOVÁ, D. KAPUSCINSKI, P. JANA, D. PETTINARI, G. FELICI, M. NOGAJEWSKI, K. BARTOS, M. WATANABE, K. TANIGUCHI, T. FAUGERAS, C. POTEMSKI, M. BABINSKI, A., POLIMENI,A. MOLAS, M.R.

Originální název

Excitons and trions in WSSe monolayers

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The possibility of almost linear tuning of the band gap and of the electrical and optical properties in monolayers (MLs) of semiconducting transition metal dichalcogenide (S-TMD) alloys opens up the way to fabricate materials with on-demand characteristics. By making use of photoluminescence spectroscopy, we investigate optical properties of WSSe MLs with a S/Se ratio of 57/43 deposited on SiO2/Si substrate and encapsulated in hexagonal BN flakes. Similarly to the 'parent' WS2 and WSe2 MLs, we assign the WSSe MLs to the ML family with the dark ground exciton state. We find that, in addition to the neutral bright A exciton line, three observed emission lines are associated with negatively charged excitons. The application of in-plane and out-of-plane magnetic fields allows us to assign undeniably the bright and dark (spin- and momentum-forbidden) negative trions as well as the phonon replica of the dark spin-forbidden complex. Furthermore, the existence of the single photon emitters in the WSSe ML is also demonstrated, thus prompting the opportunity to enlarge the wavelength range for potential future quantum applications of S-TMDs.

Klíčová slova

excitons; transition metal dichalcogenides; photoluminescence; g-factor; alloy; dark trion; phonon replica

Autoři

PUCKO, K.; BLUNDO, E.; ZAWADSKA, N.; CIANCI,S.; VÁCLAVKOVÁ, D.; KAPUSCINSKI, P.; JANA, D.; PETTINARI, G.; FELICI, M.; NOGAJEWSKI, K.; BARTOS, M.; WATANABE, K.; TANIGUCHI, T.; FAUGERAS, C.; POTEMSKI, M.; BABINSKI, A., POLIMENI,A.; MOLAS, M.R.

Vydáno

1. 1. 2023

Nakladatel

IOP Publishing Ltd

Místo

BRISTOL

ISSN

2053-1583

Periodikum

2D Materials

Ročník

10

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

015018

Strany do

15026

Strany počet

9

URL

https://iopscience.iop.org/article/10.1088/2053-1583/aca915

BibTex

@article{BUT183440,
  author="PUCKO, K. and BLUNDO, E. and ZAWADSKA, N. and CIANCI,S. and VÁCLAVKOVÁ, D. and KAPUSCINSKI, P. and JANA, D. and PETTINARI, G. and FELICI, M. and NOGAJEWSKI, K. and BARTOS, M. and WATANABE, K. and TANIGUCHI, T. and FAUGERAS, C. and POTEMSKI, M. and BABINSKI, A., POLIMENI,A. and MOLAS, M.R.",
  title="Excitons and trions in WSSe monolayers",
  journal="2D Materials",
  year="2023",
  volume="10",
  number="1",
  pages="9",
  doi="10.1088/2053-1583/aca915",
  issn="2053-1583",
  url="https://iopscience.iop.org/article/10.1088/2053-1583/aca915"
}