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VALLEJOS VARGAS, S. GRÁCIA, I. PIZÚROVÁ, N. FIGUERAS, E. ČECHAL, J. HUBÁLEK, J. CANÉ, C.
Originální název
Gas sensitive ZnO structures with reduced humidity-interference
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
Gas microsensors based on zinc oxide structures with rod- and needle-like morphology, both integrated via a non-catalyzed vapor-solid mechanism enabled using aerosol-assisted chemical vapor deposition, are developed. Analyses of the films via SEM, TEM, XPS, and water contact angle indicate a higher concentration of oxygen vacancies, higher aspect ratio and higher roughness factor for the needles than for the rods. Gas sensing tests towards hydrogen and carbon monoxide demonstrate reduced humidity-interference, and higher responses to the analytes for the needle-based systems compared to the rods. These results are attributed to the morphology of the sensitive materials, which not only affects the surface-area-to-volume-ratio of the films but also their surface chemistry. These findings indicate that a thorough optimization of morphology, structure and surface properties of gas sensitive metal oxides could allow for more reliable sensor operation in humid conditions.
Klíčová slova
Zinc oxide Nanostructures Gas sensor Humidity
Autoři
VALLEJOS VARGAS, S.; GRÁCIA, I.; PIZÚROVÁ, N.; FIGUERAS, E.; ČECHAL, J.; HUBÁLEK, J.; CANÉ, C.
Vydáno
28. 8. 2019
ISSN
0925-4005
Periodikum
Sensors and Actuators B: Chemical
Ročník
301
Číslo
1
Stát
Švýcarská konfederace
Strany od
127054
Strany do
Strany počet
9
URL
https://www.sciencedirect.com/science/article/pii/S0925400519312535?via%3Dihub
BibTex
@article{BUT159000, author="Stella {Vallejos Vargas} and Isabel {Grácia} and Naděžda {Pizúrová} and Eduard {Figueras} and Jan {Čechal} and Jaromír {Hubálek} and Carles {Cané}", title="Gas sensitive ZnO structures with reduced humidity-interference", journal="Sensors and Actuators B: Chemical", year="2019", volume="301", number="1", pages="127054--127054", doi="10.1016/j.snb.2019.127054", issn="0925-4005", url="https://www.sciencedirect.com/science/article/pii/S0925400519312535?via%3Dihub" }