UV-assisted fluctuation-enhanced gas sensing by ink-printed MoS₂ devices.

ABSTRACT: In this work, MoS₂ flakes were printed on ceramic substrates and investigated toward 1-10 ppm of nitrogen dioxide (NO₂), 2-12 ppm of ammonia (NH₃), and 2-12 ppm acetone (C₃H₆O) under UV light (275 nm). The structure of overlapping MoS₂ flakes and UV light assistance affected high responsivity to NO₂ when DC resistance was monitored, and superior sensitivity to NH₃ was obtained from the low-frequency noise spectra. MoS₂ exhibited response and recovery times in hundreds of seconds and stability throughout the experiments conducted within a few months. MoS₂ sensor exhibited a resistance drift during the detection of a specific relaxation time. Subtracting the baseline burden with expo

SUBMITTER: Drozdowska K 

PROVIDER: S-EPMC11437144 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature