Synthesis of S-doped ZnO by the interaction of sulfur with zinc salt in PEG200

S-doped ZnO nanoparticles (S-ZnO) were synthesized via a one-step and green method by using zinc acetate dihydrate as a precursor, S powder as a dopant and PEG200 as a solvent with the number of moles of sulfur (nS) smaller than that of zinc salt (nZn). A possible mechanism was proposed to elucidate the formation of S-ZnO. PL spectra show strong green emission band, which could be applied to ZnO optoelectronic devices that work in the visible spectrum.119