Fig. 5From: In2O3 Nanotower Hydrogen Gas Sensors Based on Both Schottky Junction and Thermoelectronic Emission a Typical response curves and b the response as a function of operating temperature of In2O3 nanotower gas sensor exposed to H2 concentrations ranging from 2 to 1000 ppm and tested at 120–270 °C, respectivelyBack to article page