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@article{2371858,
author = {Švandová, Lucia and Pazderka, Michal and Přibyl, Roman and Šťastný, Přemysl and Kelar, Jakub and Kelar Tučeková, Zlata and Slavíček, Pavel and Trunec, Martin and Černák, Mirko},
article_number = {January 2024},
doi = {http://dx.doi.org/10.1088/1361-6463/ad1f30},
keywords = {discharge ignition; dielectric barrier discharge; memory effect; charge traps},
language = {eng},
issn = {0022-3727},
journal = {Journal of Physics D: Applied Physics},
title = {Complex characterisation of Cr-doped α-Al 2O3 for DBD applications},
url = {https://iopscience.iop.org/article/10.1088/1361-6463/ad1f30},
volume = {57},
year = {2024}
}
TY - JOUR
ID - 2371858
AU - Švandová, Lucia - Pazderka, Michal - Přibyl, Roman - Šťastný, Přemysl - Kelar, Jakub - Kelar Tučeková, Zlata - Slavíček, Pavel - Trunec, Martin - Černák, Mirko
PY - 2024
TI - Complex characterisation of Cr-doped α-Al 2O3 for DBD applications
JF - Journal of Physics D: Applied Physics
VL - 57
IS - January 2024
SP - 1-16
EP - 1-16
PB - IOP Publishing Ltd
SN - 00223727
KW - discharge ignition
KW - dielectric barrier discharge
KW - memory effect
KW - charge traps
UR - https://iopscience.iop.org/article/10.1088/1361-6463/ad1f30
N2 - $\textrm{Al}_2\textrm{O}_3$ samples doped with $\textrm{Cr}_2\textrm{O}_3$ up to $10\,\textrm{vol.}\%\,(12.7\,\textrm{wt}\%)$ were investigated with respect to their electrical, structural and morphological properties relevant to their use as a dielectric barrier in dielectric barrier discharges (DBDs). The surface properties were analysed using atomic force microscopy and a scanning electron microscope. The structural properties were investigated using x-ray diffraction (XRD) analysis. Regarding electrical properties, we measured the dielectric constant of the material, the discharge ignition voltage in a coplanar configuration in the air as well as in nitrogen, and the working domains (WDs) of atmospheric pressure Townsend discharge (APTD). The charge-trapping properties of the studied samples were measured by an electrostatic voltmeter. There was observed a significant ignition voltage decrease with maximal decrease for sample doped with $1\,\textrm{vol.}\%\,\textrm{Cr}_2\textrm{O}_3$. For the samples doped with $10\,\textrm{vol.}\%$ of $\textrm{Cr}_2\textrm{O}_3$ a rapid surface potential decay was observed that is important from the viewpoint of DBDs plasma filamentation due to the so-called surface memory effect. The WDs of the APTD showed variations, and it has been significantly extended for the 5Cr sample up to at least 24 kHz compared to other samples. Thus, the results presented in this paper show the potential of Cr-doped dielectric barriers and point towards future research directions.
ER -
ŠVANDOVÁ, Lucia, Michal PAZDERKA, Roman PŘIBYL, Přemysl ŠŤASTNÝ, Jakub KELAR, Zlata KELAR TUČEKOVÁ, Pavel SLAVÍČEK, Martin TRUNEC and Mirko ČERNÁK. Complex characterisation of Cr-doped α-Al 2O3 for DBD applications. \textit{Journal of Physics D: Applied Physics}. IOP Publishing Ltd, 2024, vol.~57, January 2024, p.~1-16. ISSN~0022-3727. Available from: https://dx.doi.org/10.1088/1361-6463/ad1f30.
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