Focused-ion-beam-deposited Pt contacts on ZnO nanowires

Abstract

We report on the transport properties of single ZnO nanowires measured as a function of the length/square of radius ratio via transmission line method. The specific contact resistance of the FIB Pt contacts to the ZnO nanowires is determined as low as 1.1×10-5 Ωcm2. The resistivity of the ZnO nanowires is measured to be 2.2×10-2 Ωcm. ZnO nanowire-based UV photodetectors contacted by the FIB-Pt with the photoconductive gain as high as ~108 have been fabricated and characterized.