P2.8.4 NO2 response to few-layers MoS2

C. Cantalini, L. Giancaterini, M. Donarelli, S. Santucci & L. Ottaviano
The gas sensing response to NO2 gas, H2 and CO of transition metal dichalcogenide (TMD) MoS2fewlayered structure, chemically exfoliated to obtain a suspension of 2D graphene-like MoS2 flakes and deposited by drop casting on Si3N4, is here presented.Films have been characterized by Raman, XPS Spectroscopy and SEM. Gas response to NO2 (20 ppb-1 ppm) and 25-200 C° operating temperature has shown a pto n-type change of the electrical response depending on the annealing temperature. The...