Printed copper acetate based H2S sensor on paper substrate

Fully printed copper acetate based H2S sensors on paper are presented. The sensors show several orders of magnitude change in resistance (>108) when exposed to 10ppm of H2S gas at room temperature. The effect of different solvents, film thickness and substrates (absorbing and nonabsorbing) have b...

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Veröffentlicht in:	Sensors and actuators. B, Chemical Chemical, 2012-10, Vol.173, p.868-873
Hauptverfasser:	Sarfraz, J., Määttänen, A., Ihalainen, P., Keppeler, M., Lindén, M., Peltonen, J.
Format:	Artikel
Sprache:	eng
Schlagworte:	ACETATES Atomic force microscopy Copper COPPER ACETATE Electric potential ELECTRICAL CONDUCTIVITY food packaging Food packaging industry Hydrogen sulfide industry Printed Sensor Sensors solvents temperature transmission electron microscopy X RAY SPECTROSCOPY X-ray photoelectron spectroscopy
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Beschreibung
Zusammenfassung:	Fully printed copper acetate based H2S sensors on paper are presented. The sensors show several orders of magnitude change in resistance (>108) when exposed to 10ppm of H2S gas at room temperature. The effect of different solvents, film thickness and substrates (absorbing and nonabsorbing) have been studied to optimize the sensor response. The large resistance changes are associated with the difference in resistivity between the metal salt and the resulting metal sulfide. These sensors were characterized by transmission electron microscopy (TEM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS) and conductometry. The low cost, low voltage (
ISSN:	0925-4005 1873-3077
DOI:	10.1016/j.snb.2012.08.008