ZnO nanowires ultraviolet detector with high photoresponse based Ag NPs decoration

In this study, photoconductive detector of nanowire-based devices have been fabricated by aligning ZnO nanowires across paired Au electrodes using dielectrophoresis. The Ag nanoparticle (NP) decoration as an effective way to enhance the maximum responsivity, and cut down the response time of the traditional region ZnO PD. The enhancement is caused by the enhanced space charge effect due to the existence of the localized Schottky junctions under opencircuit conditions at the NW surfaces, leading to a more pronounced electron-hole separation effect.