Two-Dimensional (2D) SnS2-based Oxygen Sensor

2D SnS2 flakes with a hexagonal layer nanostructure have been synthesized using a wet chemical route. The synthesized SnS2 flakes consist of interconnected hexagonal nanosheets with lateral size of about 90 nm and thickness in the range 5-10 nm. As prepared 2D SnS2 flakes have been integrated onto conductometric transducing gas sensor platforms and tested towards oxygen. 2D SnS2-based sensor, operating in dark at 150 degrees C, provided high and reversible responses to oxygen pulses in the range 0 to 20 % volume. The effect of UV irradiation on the oxygen sensing performance and the cross sensitivity towards other organic vapor and gases were also investigated.