Review Article

On the Low-Temperature Response of Semiconductor Gas Sensors

Figure 4

Low-temperature gas response of an SnO2:Au sensor to a number of reducing analyte gases: (a) as measured at room temperature, (b) as measured at the normally employed high sensor operation temperatures ( °C). The comparison in the left panel shows that SnO2:Au and HD show the same kind of cross sensitivity profiles despite of their very different semiconductor surface properties [32].