Acetone Gas Sensing Properties of a Multiple-Networked Fe₂O₃-Functionalized CuO Nanorod Sensor

Figure 5

Schematic diagrams showing the depletion layer and potential barrier forming at the Fe₂O₃-CuO junction upon exposure to air and acetone gas and energy band diagrams of the Fe₂O₃-CuO system in air and acetone gas.