Photoluminescence characterization of vertically aligned ZnO microrods

► PL characterization of vertically aligned ZnO microrods grown using a Ni-based catalyst. ► Near-band-edge emission lines in vertically aligned ZnO microrods. ► Excitation-power- and temperature- dependent PL spectra of ZnO microrods. ► Characteristics of surface excitons line for ZnO microrods.