%0 Journal Article %T Positive and Negative Photoconductivity Conversion Induced by H2O Molecule Adsorption in WO3 Nanowire %A Dongsheng Tang %A Gang Zhao %A Peng Fu %A Weichang Zhou %A Weike Wang %A Wenjun Yang %A Yahui Liu %A Yanling Yin %A Yuehua Peng %J Archive of "Nanoscale Research Letters". %D 2019 %R 10.1186/s11671-019-2978-y %X Typical I-T curves (Vds£¿=£¿3£¿V) of an Au/h-WO3 NW/Au device recorded repeatedly with laser (445£¿nm, 500£¿mW) on and off under 40%RH (a), 50% RH (b), 60% RH (c), and 70% RH (d). The lower inset of a: SEM image of an Au/h-WO3 NW/Au device, the nanowire between two electrodes with a diameter of about 300£¿nm, and a length of about 4£¿¦Ì %K Hexagonal WO3 nanowire %K Negative photoconductivity %K Positive photoconductivity %K Hydrogen ion %K Schottky emission %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6478747/