Shell-enhanced photoluminescence and ferromagnetism of Co:ZnS/ Co:ZnO core-shell nanostructure

摘要

Co:ZnS/Co:ZnO core-shell nanostructure, which consists of single-crystalline Co:ZnS core and polycrystalline Co:ZnO shell, has been synthesized via thermal decomposition of Zn_(0.97)Co_(0.03)S(en)_(0.5) precursor. The Co:ZnS/Co:ZnO core-shell nanostructure integrates outstanding visible photoluminescence and room-temperature ferromagnetism into one nanomaterial. Compared to Co:ZnS nanorods, the photoluminescence and ferromagnetism of the Co:ZnS/Co:ZnO core-shell nanostructures are significantly improved due to the introduction of large amount of interfacial defects by forming Co:ZnO shell.