ZnO Nanowire emitters for tunable near-UV-Blue Light emitting diodes

Abstract

We have shown that the emission wavelength could be tuned and shift toward the violet-blue region by up to 40 nm by doping with Cu or Cd . Our results clearly state the remarkable quality of the pure and doped-ZnO electrochemical materials and high quality of the ZnO-NWs/p-GaN interface. Near-UV and violet-blue sources can be combined with efficient phosphors for solid-state lighting in order to replace fluorescent light sources with long lifetimes and high energy saving.