Synthesis and characteristics of ZnS/CdS composite nanocrystals in block copolymer micelle

In hydroxylated poly(styrene- b -butadiene- b -styrene) (HO–SBS) micelle, ZnS/CdS composite nanocrystals were prepared by adding Cd 2+ ions and Zn 2+ ions to the system sequentially. The resulting composites were identified with elemental analysis, transmission electron microscopy, x-ray diffraction, surface photovoltage spectroscopy, and electric field induced surface photovoltage spectroscopy.