Fig. 4From: Positive and Negative Photoconductivity Conversion Induced by H2O Molecule Adsorption in WO3 NanowireTypical I-T curves of a device recorded on different biases (2 V (a), 3 V (b), 4 V (c)) with laser (445 nm, 500 mW) on and off at 50% RH. d Schematic band structures of the Au/h-WO3 NW/Au device under different bias voltages and the non-ballistic transport of the injected electronsBack to article page