EFFECT OF ANNEALING AND TRANSITION METAL DOPING ON STRUCTURAL, OPTICAL AND MAGNETIC PROPERTIES OF ZnO NANOMATERIAL

摘要

The unique optical, magnetic and electronic properties of nanoscale ZnO make them an ideal material for diverse potential applications. We synthesized different shapes and sizes of undoped and transition metal doped ZnO nanostructures. The prepared nanomaterial was systematically studied to probe the effect of size, shape, synthesis process and doping on their structural, optical, electronic and magnetic properties. Here we elucidate the crucial role of defect states in the luminescence of pre- and post-annealed undoped ZnO nanoparticles. This finding paves the way to the process of altering visible luminescence in ZnO nanoparticles without varying their size or shape. Furthermore, we demonstrate the vital role of transition metal doping to alter the shape, size and subsequently optical and magnetic properties of ZnO nanostructures.