Enhanced Response Speed of ZnO Nanowire Photodetector by Coating with Photoresist

Figure 8

Schematic diagrams of the carrier transport mechanism of the ZnO NW (cross-section) with photoresist. (a) Photoresist and oxygen capture electrons from the NW and form a depletion layer below the surface of the ZnO NW; (b) photoresist and oxygen lose the electrons when the UV light illuminates the ZnO NW. Oxygen cannot escape the surface of the NW.

(a)

(b)