Evolution of the Raman 2D’ mode in monolayer graphene during electrochemical doping

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F22%3A00559108" target="_blank" >RIV/61388955:_____/22:00559108 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0332528" target="_blank" >https://hdl.handle.net/11104/0332528</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.microc.2022.107739" target="_blank" >10.1016/j.microc.2022.107739</a>

Result language
angličtina
Original language name
Evolution of the Raman 2D’ mode in monolayer graphene during electrochemical doping
Original language description
Effective charge doping and control of the Fermi level shift is a crucial aspect in graphene device fabrication. Raman spectroscopy is extensively used for primary characterization of such samples, however, quantification of carrier concentration using the known G-2D vector analysis can pose problems when more sources of phonon renormalization are present, for example lattice deformation or disorder. In such cases, analysis of another Raman mode can provide the needed missing information. In this study, chemical vapor-deposition-grown single-layer graphene was monitored by in-situ Raman spectroelectrochemistry with the focus on the behavior of the 2D’ mode upon the application of electrochemical potential. We analyzed the changes of the Raman peak intensity, frequency and linewidth of the 2D’ mode as a function of electrode potential in detail and compared the obtained results with well-known behavior of the G and 2D modes during electrochemical doping.
Czech name
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Czech description
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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
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

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

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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