Investigation of gas sensing mechanism of SnO.sub.2./sub. based chemiresistor using near ambient pressure XPS

Vorokhta, M.; Khalakhan, I.; Vondráček, Martin; Tomeček, D.; Vorokhta, Maryna; Marešová, E.; Nováková, A.; Vlček, J.; Fitl, P.; Novotný, Michal; Hozák, P.; Lančok, Ján; Vrňata, M.; Matolínová, I.; Matolín, V.

doi:https://dx.doi.org/10.1016/j.susc.2018.08.003

Počet záznamů: 1

Investigation of gas sensing mechanism of SnO.sub.2./sub. based chemiresistor using near ambient pressure XPS

1.

SYSNO ASEP	0496392
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Investigation of gas sensing mechanism of SnO₂ based chemiresistor using near ambient pressure XPS
Tvůrce(i)	Vorokhta, M. (CZ) Khalakhan, I. (CZ) Vondráček, Martin (FZU-D)_{RID, ORCID} Tomeček, D. (CZ) Vorokhta, Maryna (USMH-B)_{ORCID, SAI} Marešová, E. (CZ) Nováková, A. (CZ) Vlček, J. (CZ) Fitl, P. (CZ) Novotný, Michal (FZU-D)_{RID, ORCID, SAI} Hozák, P. (CZ) Lančok, Ján (FZU-D)_{RID, ORCID} Vrňata, M. (CZ) Matolínová, I. (CZ) Matolín, V. (CZ)
Celkový počet autorů	15
Zdroj.dok.	Surface Science. - : Elsevier - ISSN 0039-6028 Roč. 677, Nov (2018), s. 284-290
Poč.str.	7 s.
Jazyk dok.	eng - angličtina
Země vyd.	NL - Nizozemsko
Klíč. slova	near ambient pressure XPS ; nanostructured tin oxide layer ; gas sensing mechanism ; ethanol vapors ; chemisorbed oxygen
Vědní obor RIV	BM - Fyzika pevných látek a magnetismus
Obor OECD	Condensed matter physics (including formerly solid state physics, supercond.)
Vědní obor RIV – spolupráce	Ústav struktury a mechaniky hornin - Anorganická chemie
CEP	GA17-13427S GA ČR - Grantová agentura ČR
Institucionální podpora	FZU-D - RVO:68378271 ; USMH-B - RVO:67985891
UT WOS	000447478700038
EID SCOPUS	85051623375
DOI	10.1016/j.susc.2018.08.003
Anotace	In this article, we present the results of an investigation into chemical processes which take place at the surface of SnO2-based chemiresistor in various atmospheres (1 mbar of argon, 1 mbar of oxygen, 0.1 mbar of ethanol,1 mbar of oxygen +0.1 mbar of ethanol mixture) at common working temperatures (450 and 573 K). The key method for nanoscale analysis was the Near Ambient Pressure X-ray Photoelectron Spectroscopy. In parallel the resistance and DC-responses of SnO2 layer were in-situ monitored providing information about macroscale processes during gas sensing. The change in the sensor resistance after exposure to the ethanol-containing atmospheres together with the disappearance of the band bending effect and observation of different carbonaceous groups including ethoxy groups and acetaldehyde molecules on the sensor surface in the XPS spectra supported the theory of chemical interaction of ethanol with the chemisorbed oxygen.
Pracoviště	Fyzikální ústav
Kontakt	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Rok sběru	2019

Počet záznamů: 1