Figure 17.

Panel (a): the MoS₂-PdCl₂ solution; Panel (b): MoS₂-Pd FET, with gold electrodes; Panel (c): SEM image of the MoS₂-Pd composite; Panel (d): comparison between the electrical responses of pristine MoS₂ and Pd-MoS₂ nanosheets to 50,000 ppm of H₂; Panel (e): electrical responses of the Pd-MoS₂ sensor exposed to H₂ concentrations ranging from 50,000 to 500 ppm; Panel (f): selectivity of the Pd-MoS₂ device to different target gases. (Adapted with permission from [182]. Published by Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany).