Multifunctional Zn_(0.99-x)Mn_(0.01)Cu_xS nanowires: Structure, luminescence and magnetism

摘要

The wurtzite-type Zn_(0.99-x)Mn_(0.01)Cu_xS (x = 0, 0.003, 0.01) nanowires were prepared by a simple hydrothermal method at 180 ℃. The structure and morphology of the samples were characterized by X-ray diffraction (XRD), X-ray absorption fine structure (XAFS), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), field emission scanning electron micrograph (FESEM) and X-ray photoelectron spectrum (XPS). The results showed that both the Mn~(2+) and Cu~(2+) ions substituted for the Zn~(2+) sites in the host ZnS. The ethylenediamine-mediated template was observed, which was used to explain the growth mechanism of the nanowires. The color-tunable emission can be obtained by adjusting the concentrations of Mn~(2+) and Cu~(2+) ions. The ferromagnetism was observed around room temperature.