Fig. 9From: NO2 sensing properties of WO3-decorated In2O3 nanorods and In2O3-decorated WO3 nanorodsEnergy band diagrams of a WO3-In2O3 couple a before and b after contact. Energy band diagrams and schematics of In2O3 NPs-decorated WO3 NRs: c in air and d in NO2, and of WO3 NPs-decorated In2O3 NRs: e in air and f in NO2Back to article page