Fe:ZnSe/ZnS core-shell semiconductor nanocrystals:microemulsion synthesis and optical properties

Fe:ZnSe/ZnS core-shell nanocrystals were synthesized by water-in-oil(W/O) microemulsions of cyclohexane/Triton X-100/water/propanol-2.The as-prepared nanocrystals were characterized by X-ray diffraction(XRD) technique,transmission electron microscopy(TEM),photoluminescence(PL) spectroscopy,ultraviolet-visible(UV-Vis) absorption spectroscopy.The effect of molar ratio of surfactant to water(R value) on the optical properties of as-synthesized products was investigated,and the underlying mechanisms were discussed.