Thickness dependent interplay between trion binding energy and electron density in CVD-grown MoS2
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00643810" target="_blank" >RIV/68378271:_____/25:00643810 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21230/25:00387330
Result on the web
<a href="https://hdl.handle.net/11104/0374171" target="_blank" >https://hdl.handle.net/11104/0374171</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1402-4896/ae26db" target="_blank" >10.1088/1402-4896/ae26db</a>
Alternative languages
Result language
angličtina
Original language name
Thickness dependent interplay between trion binding energy and electron density in CVD-grown MoS2
Original language description
Among the transition metal dichalcogenides, single layer MoS2 has drawn great attention due to its direct bandgap of approximately 1.9 eV at room temperature, exhibiting extremely high excitonic photoluminescence in the visible range, making it a promising material for opto-electronic applications. In this work, we synthesized MoS2 on a Si/SiO2 substrate using a single-step atmospheric pressure chemical vapor deposition process, successfully yielding bilayer to few layered MoS2 films. The layer dependence of the as-grown MoS2 layers was analyzed from the peak energy difference (Δ) between the in-plane (E2g) and out-of-plane (A1g) phonon modes in the Raman spectra to quantify the specific number of layers within the MoS2 flake (2–15 layers). Room-temperature photoluminescence characteristics of the excitonic emission exhibited a redshift in energy by 0.04 eV as the number of layers increased in MoS2. An increase in the number of layers exhibited a decreasing dispersion of trion binding energy from a standardized fitting procedure of the PL spectra under appropriate boundary conditions. Henceforth, we observe a thickness dependent inversely related interplay between trion binding energy and electron density (n) due to defects in MoS2, which is crucial for future opto-electronic applications.
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
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physica Scripta
ISSN
0031-8949
e-ISSN
1402-4896
Volume of the periodical
100
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
125947
UT code for WoS article
001645186600001
EID of the result in the Scopus database
2-s2.0-105034108251