pp. 75-86
S&M870 Research Paper https://doi.org/10.18494/SAM.2012.736 Published: February 16, 2012 Sensing Properties of Tin Acetylacetonate-Based Thin Films Doped with Platinum [PDF] Přemysl Fitl, Vladimír Myslík, Martin Vrňata, Josef Náhlík, Dušan Kopecký, Jan Vlček, Jaroslav Hofmann and Ján Lančok (Received November 16, 2010; Accepted March 11, 2011) Keywords: gas sensing, tin acetylacetonate, pulsed laser deposition (PLD) method, selectivity tunable by temperature
Thin sensing films based on tin acetylacetonate (SnAcAc) with a platinum catalyst were prepared in situ by pulsed laser deposition (PLD) with a Nd:YAG laser. The morphology and roughness of both as-deposited and annealed layers were characterized. These layers were also deposited on alumina sensor substrates with interdigital Pt electrodes and then used for the detection of hydrogen, n-butanol, toluene, and water vapors in synthetic air. The temperature dependence of the response of the prepared sensors was measured in the range of 40–350℃. It was proved that the selectivity to the above mentioned gases is easily tunable by adjusting the operating temperature of the sensor. The maximum response was achieved at 110℃ for hydrogen, 220℃ for n-butanol, 300℃ for toluene, and 340℃ for water vapor. The activation energy of surface reactions taking place during the detection process was also calculated.
Corresponding author: Přemysl FitlCite this article Přemysl Fitl, Vladimír Myslík, Martin Vrňata, Josef Náhlík, Dušan Kopecký, Jan Vlček, Jaroslav Hofmann and Ján Lančok, Sensing Properties of Tin Acetylacetonate-Based Thin Films Doped with Platinum, Sens. Mater., Vol. 24, No. 2, 2012, p. 75-86. |