Different thick-film methods in printing of one-electrode semiconductor gas sensors
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In<inf>2</inf>O<inf>3</inf>:Ga and In<inf>2</inf>O<inf>3</inf>:P-based one-electrode gas sensors: Comparative study
2015, Ceramics InternationalCitation Excerpt :However, experiment has shown that In2O3, due to specific electrophysical properties, is the most promising material for such application [3–5]. The most studied metal oxide SnO2 [6] is not the optimal material for one-electrode gas sensor design due to much higher resistance [7]. It is known that low selectivity to specific gases and high sensitivity to the air humidity are the main shortcomings of the metal oxide chemiresistors, including In2O3-based gas sensors [1,2].
Nanocrystalline chemically modified CdIn <inf>2</inf>O <inf>4</inf> thick films for H <inf>2</inf>S gas sensor
2012, Thin Solid FilmsCitation Excerpt :Thick-film technology has been used to obtain inexpensive and reliable metal oxide semiconductor sensors which show good response and selectivity to hazardous gasses [1]. In particular, WO3 and SnO2, which behave as an n-type semiconductors in the presence of either reducing or oxidizing species [2,3] have been found to be highly sensitive to environmentally relevant gasses such as ammonia vapor, nitrogen oxides, sulfur dioxide and hydrogen sulfide [4–6]. However for H2S gas detection, literature and some of our experience reveals that the copper oxide incorporation in SnO2 greatly improves the sensitivity and selectivity toward H2S [7] to some reducing gasses [8,9].
An electronic nose system based on a micro-machined gas sensor array to assess the freshness of sardines
2009, Sensors and Actuators, B: ChemicalPractical aspects in design of one-electrode semiconductor gas sensors: Status report
2007, Sensors and Actuators, B: ChemicalExperimental and theoretical studies of indium oxide gas sensors fabricated by spray pyrolysis
2005, Sensors and Actuators, B: ChemicalA route toward more selective and less humidity sensitive screen-printed SnO<inf>2</inf> and WO<inf>3</inf> gas sensitive layers
2004, Sensors and Actuators, B: Chemical