Co-doped ZnO nanoparticles were obtained by aqueous synthesis with an annealing at 400 °C. The incorporation efficiency of Co into the ZnO lattice was found to be around 100%. The nanoparticles keep the wurzite phase in all the Co-doping range. However, the lattice parameters and strain change monotonously mainly up to about 1 at% Co doping. The luminescence, which was signed by a wide emission band that rises from 2.2 eV to 3.3 eV, reduces the intensity as the Co-doping increases. That behavior was related to the strong influence of Co after substituting Zn in any place of the lattice. Additionally, a different approach was made on the O 1s XPS peak at binding energy BE ≈ 531.5 eV. We associate this peak to O–O re-bond caused by inward relaxation due to Zn vacancy. Such consideration is valid for doped and non-doped ZnO.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.