Fig. 13.
a SEM image of mechanically exfoliated MoS2-based device. b MoS2 device mounted on the chip. c Sensitivity to NO2 gas of the MoS2 sensor under different intensities of the green light source. Reproduced with permission [112]. Copyright 2013, American Chemical Society. d Schematic representation of a CVD grown MoS2 sensor under UV light illumination. e Transient gas response to different concentrations of NO2, and f gas sensing mechanism, of the CVD grown MoS2 sensor at room temperature, 100 °C and under UV illumination. Reproduced with permission [114]. Copyright 2017, American Chemical Society