Optical properties of Mg-doped ZnO nanoparticles

Mg-doped ZnO nanoparticles with hexagonal structure were synthesis in basic chemical solution method without using capping agent. The microstructure and optical response of prepared nanoparticles were characterized by using XRD, EDX, optical absorption, photoluminescence and TEM measurements. Semiconductor nanoparticles show unique size dependent optical properties due to quantum confinement effect and there is interest for application in optoelectronics. The ZnO and its composition have considerable attention due to its potential in wideband gap (3.3eV) optoelectronic applications. In most of these methods various capping agents have been used to prevent the growth of particles with time. One of the major challenges in the optimizing of the optical properties of ZnO is the incorporation of doping ions into the ZnO lattice. The peak position of doped nanoparticles shows shift as effect of doping incorporation. In this work, we present a simple chemical method for synthesis mono-disperse Mg-doped ZnO nanoparticles with semi-spherical shape, without using surfactant.