Structural and photoluminescent properties of Ni doped ZnO nanorod arrays prepared by hydrothermal method

摘要: Abstract Self-assembled Ni-doped zinc oxide (Zn1−xNixO, x = 0.05, 0.10, 0.15, i.e., ZnNiO, nominal composition) nanorod arrays vertically grown on the ZnO seed layer covered glass along [0 0 1] direction were synthesized by hydrothermal method. Their images and structures have been characterized scan electron microscope (SEM), X-ray diffraction (XRD) Raman spectra, showing that Ni doping is beneficial to formation of nanorods with hexagonal cross section enhancement crystal quality. photoemission spectroscopy (XPS) study further demonstrated atoms successfully doped into lattices. The photoluminescence (PL) spectra ZnNiO samples show near bandedge emission (NBE) peaks at about 380 nm a low excitation power NBE peak position redshifts while its intensity continuously increases increase concentration. With increasing, from 400 nm for arrays. mechanisms discussed, which helpful understanding their room temperature ferromagnetisms.