Figure 1From: Giant Persistent Photoconductivity of the WO3 Nanowires in Vacuum Conditiona The I ds – V ds characteristics of a single WO 3 nanowire under dark and 312-nm UV illumination (~1 mW/cm2). The inset is an SEM image of a single WO3 nanowire device. b The persistent photoconductivity of the WO3 nanowire with Vds = 0.2 V.Back to article page