ZnO propeller-like nanostructures and the influence of carriers on field emission

摘要

Propeller-like ZnO nanostructures are fabricated by a physical vapor deposition method. This structure exhibits a good field emission characteristic with a turn-on field of 4.36 V/μm. Cathodoluminescence studies suggest that the high current density in the surface is attributed to the main reason causing good field emission characteristic.