Surface structure analysis of ZnO nano-particles fabricated by pulsed Nd: YAG laser ablation under plasma circumstance

In this letter, zinc oxide (ZnO) nanophosphors have been fabricated in oxygen/nitrogen plasma circumstance by Zn or ZnO targets using pulsed Nd:YAG laser ablation. Cathodoluminescence (CL) technique with energy-controlled electron beams, combined with X-ray diffraction (XRD) and X-ray photoemission spectroscopy (XPS) analyses, was used to study the structure of nano-sized ZnO particles fabricated by YAG laser ablation. The crystalline structure analysis of ZnO nanoparticles can be shown from XRD and FE-SEM result. The XPS are used to investigate the electronic structure of the nanoparticles and reveal that surface defect-relative emissions play a major role in the luminescence of ZnO.