A facile synthesis and optical properties of ZnO:S,Cl apertured architectures

Abstract

A facile process is demonstrated to synthesize ZnO:S,Cl apertured architectures via annealing of the mixture of ZnS and NH4Cl. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), photoluminescence (PL), and photoluminescence excitation (PLE), respectively. The XRD and SEM results indicate that the as-prepared products with high crystallinity and shaped like cakes with the holes (1–5 μm) can be seen clearly on the particles surface. The PL spectrum presents a broad green emission band (450–600 nm) centered at 500 nm, which is attributed to the oxygen vacancies induced by the incorporated S. The PLE spectrum shows a broadening excitation region ranged from 250 to 420 nm, which may result from the incorporation of Cl− ions.