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Autoren:
Ricciardella, Filiberto; Lee, Kangho; Stelz, Tobias; Hartwig, Oliver; Prechtl, Maximilian; McCrystall, Mark; McEvoy, Niall; Duesberg, Georg 
Dokumenttyp:
Zeitschriftenartikel / Journal Article 
Titel:
Calibration of Nonstationary Gas Sensors Based on Two-Dimensional Materials 
Zeitschrift:
ACS omega 
Jahrgang:
Heftnummer:
11 
Jahr:
2020 
Seiten von - bis:
5959-5963 
Sprache:
Englisch 
Abstract:
Two-dimensional materials (2DMs) have high potential in gas sensing, due to their large surface-to-volume ratio. However, most sensors based on 2DMs suffer from the lack of a steady state during gas exposure, hampering sensor calibration. Here, we demonstrate that analysis of the time differential of the signal output enables the calibration of chemiresistors based on platinum or tungsten diselenide (PtSe2, WSe2) and molybdenum disulfide (MoS2), which present nonstationary behavior. 2DMs are synthesized by thermally assisted conversion of predeposited metals on a silicon/silicon dioxide substrate and therefore are integrable with standard complementary metal–oxide semiconductor (CMOS) technology. We analyze the behavior of the sensors at room temperature toward nitrogen dioxide (NO2) in a narrow range from 0.1 to 1 ppm. This study overcomes the problem of the absence of steady-state signals in … 
Fakultät:
Fakultät für Elektrotechnik und Informationstechnik 
Institut:
EIT 2 - Institut für Physik 
Professur:
Düsberg, Georg 
Open Access ja oder nein?:
Ja / Yes 
Art der OA-Lizenz:
CC BY 4.0 International