P2–27: Enhanced field emission from hybrid CuO/ZnO nano-structure

Field emission is one of the main applications of one-dimensional (1D) nanostructures with enhanced local electric field due to their sharp tips and high aspect ratio. One of such 1D field emitters is CuO nanowires. CuO nanowires are capable of achieving a high field emission current density at relatively low field exhibiting uniform field emission distribution. The enhancement of field emission property of CuO/ZnO nanostructure was reported in this paper. Oriented CuO nanowire films were prepared in ambient atmosphere by using a simple vapor-solid reaction. Hybrid CuO/ZnO nano-structure was fabricated by deposition of ZnO nano thin film using magnetron sputtering. The method presented in this work provides an efficient route to synthesize well-controlled CuO nanowire and hybrid CuO/ZnO nanostructure for nanodevice applications.