Excitons and trions in WSSe monolayers
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F23%3APU148100" target="_blank" >RIV/00216305:26620/23:PU148100 - isvavai.cz</a>
Result on the web
<a href="https://iopscience.iop.org/article/10.1088/2053-1583/aca915" target="_blank" >https://iopscience.iop.org/article/10.1088/2053-1583/aca915</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/2053-1583/aca915" target="_blank" >10.1088/2053-1583/aca915</a>
Alternative languages
Result language
angličtina
Original language name
Excitons and trions in WSSe monolayers
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
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Continuities
O - Projekt operacniho programu
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
2D Materials
ISSN
2053-1583
e-ISSN
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Volume of the periodical
10
Issue of the periodical within the volume
1
Country of publishing house
GB - UNITED KINGDOM
Number of pages
9
Pages from-to
„015018“-„“
UT code for WoS article
000899811400001
EID of the result in the Scopus database
2-s2.0-85144821867