New insights on the luminescence properties and Judd-Ofelt analysis of Er-doped ZnO semiconductor quantum dots.

In this study, Er doped ZnO semiconductor quantum dots (QDs) were synthesized using a wet chemical method. The successful doping of Er ions into the ZnO host lattice and the elemental composition was confirmed by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The ZnO and Er doped ZnO QDs with a hexagonal structure, spherical shape, and particle size of approximately 5 nm were revealed by XRD and transmission electron microscopy (TEM).