Publication detail

Complex characterisation of Cr-doped α-Al2O3 for DBD applications

SVANDOVA, L. PAZDERKA, M. PRIBYL, R. STASTNY, P. KELAR, J. TUCEKOVA, ZK. SLAVICEK, P. TRUNEC, M. CERNAK, M.

Original Title

Complex characterisation of Cr-doped α-Al2O3 for DBD applications

Type

journal article in Web of Science

Language

English

Original Abstract

Al(2)O(3 )samples doped with Cr2O3 up to 10vol.%(12.7wt%) 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 1vol.%Cr2O3 . For the samples doped with 10vol.% of Cr(2)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.

Keywords

discharge ignition; dielectric barrier discharge; memory effect; charge traps

Authors

SVANDOVA, L.; PAZDERKA, M.; PRIBYL, R.; STASTNY, P.; KELAR, J.; TUCEKOVA, ZK.; SLAVICEK, P.; TRUNEC, M.; CERNAK, M.

Released

26. 4. 2024

Publisher

IOP Publishing Ltd

Location

BRISTOL

ISBN

1361-6463

Periodical

Journal of Physics D - Applied Physics

Year of study

57

Number

17

State

United Kingdom of Great Britain and Northern Ireland

Pages count

16

URL

https://iopscience.iop.org/article/10.1088/1361-6463/ad1f30

BibTex

@article{BUT188448,
  author="SVANDOVA, L. and PAZDERKA, M. and PRIBYL, R. and STASTNY, P. and KELAR, J. and TUCEKOVA, ZK. and SLAVICEK, P. and TRUNEC, M. and CERNAK, M.",
  title="Complex characterisation of Cr-doped α-Al2O3 for DBD applications",
  journal="Journal of Physics D - Applied Physics",
  year="2024",
  volume="57",
  number="17",
  pages="16",
  doi="10.1088/1361-6463/ad1f30",
  issn="1361-6463",
  url="https://iopscience.iop.org/article/10.1088/1361-6463/ad1f30"
}