  Lead sulfide is an important photosensitive material, and its photoelectric
properties have received widespread attention. We completed the preparation of
PbS nanowires and single PbS nanowire devices, then we conducted electrical
performance tests on the PbS nanowire devices. We found that a single lead
sulfide nanowire device exhibits memristive properties that depend on the
applied voltage and the power density of light. From this we studied the
electrical transport properties of single lead sulfide nanodevices.
