Review Article

On the Low-Temperature Response of Semiconductor Gas Sensors

Figure 13

(a) Response of an HD sample, processed to exhibit different baseline resistances, towards a representative range of analyte gases; (b) concentration-dependent response of a hydrogen-terminated diamond sample towards different nitrogen bearing gases. NO and NO2 exhibit an acidic (resistance decrease) and NH3 and N2O a basic (resistance increase) response. During these tests the HD sample was kept at room temperature.