OZONE GAS SENSORS BASED ON OFF-STOICHIOMETRIC COPPER-CHROMIUM-OXIDE THIN FILMS

Antunes Afonso, João Ricardo

Reference : OZONE GAS SENSORS BASED ON OFF-STOICHIOMETRIC COPPER-CHROMIUM-OXIDE THIN FILMS


	Document type :	Dissertations and theses : Doctoral thesis
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics Engineering, computing & technology : Materials science & engineering
	Focus Areas :	Physics and Materials Science
	To cite this reference:	http://hdl.handle.net/10993/51124

Title :	OZONE GAS SENSORS BASED ON OFF-STOICHIOMETRIC COPPER-CHROMIUM-OXIDE THIN FILMS
Language :	English
Author, co-author :	Antunes Afonso, João Ricardo [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > >]
Publication date :	13-Oct-2021
Institution :	University of Luxembourg, Belval, Luxembourg
Name of the degree :	DOCTEUR DE L’UNIVERSITÉ DU LUXEMBOURG EN PHYSIQUE
Number of pages :	199
Supervisor :	Lenoble, Damien
President of the jury :	Siebentritt, Susanne
Member of the jury :	Raskin, Jean-Pierre
	GWOZIECKI, Romain
	Pereira, Luis
Keywords :	[en] Gas sensor ; Thin films ; Semiconductors
Abstract :	[en] Ozone is a major concern for indoor office pollution. Recurring exposure to low levels of ozone (in ppb range) can be associated with several cardiopulmonary diseases. As such, there is a need for cheap, easy-to-integrate ozone gas sensors that can achieve good performance and work as an alarm for dangerous ozone concentrations. In this work, we propose the use of off-stoichiometric copper-chromium-oxide, that has shown great reversible measurements at low temperature for ozone detection, as low as 50 ppb. The selectivity compared with molecular oxygen is shown. Near-Atmospheric Pressure X-Ray Photoelectron Spectroscopy led to the understanding of the ozone - delafossite surface reaction. This work discloses pioneering results in the fabrication of low cost, high sensitivity ozone sensors based on a p-type material.
Research centres :	Luxembourg Institute of Science & Technology - LIST
Funders :	Fonds National de la Recherche - FnR
Name of the research project :	MASSENA ANTUNES AFONSO
Target :	Researchers ; Professionals ; Students ; General public
Permalink :	http://hdl.handle.net/10993/51124
FnR project :	FnR ; FNR10935404 > Emmanuel Defay > MASSENA > Materials For Sensing And Energy Harvesting > 01/10/2016 > 31/03/2023 > 2015

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