Terahertz charge transport dynamics in 3D graphene networks with localization and band regimes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00572515" target="_blank" >RIV/68378271:_____/23:00572515 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0343184" target="_blank" >https://hdl.handle.net/11104/0343184</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/D2NA00844K" target="_blank" >10.1039/D2NA00844K</a>
Alternative languages
Result language
angličtina
Original language name
Terahertz charge transport dynamics in 3D graphene networks with localization and band regimes
Original language description
Terahertz steady-state and time-resolved conductivity and permittivity spectra were measured in 3D graphene networks assembled in free-standing covalently cross-linked graphene aerogels. Investigation of a transition between reduced-graphene oxide and graphene controlled by means of high-temperature annealing allowed us to elucidate the role of defects in the charge carrier transport in the materials. The THz spectra reveal increasing conductivity and decreasing permittivity with frequency. This contrasts with the Drude- or Lorentz-like conductivity typically observed in various 2D graphene samples, suggesting a significant contribution of a relaxational mechanism to the conductivity in 3D graphene percolated networks. The charge transport in the graphene aerogels exhibits an interplay between the carrier hopping among localized states and a Drude contribution of conduction-band carriers. Our findings provide important insight into the charge transport in complex graphene structures.
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
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nanoscale Advances
ISSN
2516-0230
e-ISSN
2516-0230
Volume of the periodical
5
Issue of the periodical within the volume
11
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
2933-2940
UT code for WoS article
000984116400001
EID of the result in the Scopus database
2-s2.0-85159162265