title: Luminescence properties of multilayer coated single structure ZnS/CdS/ZnS nanocomposites.
abstract: Water soluble ZnS, CdS and multilayer coated ZnS/CdS/ZnS nanocomposites were successfully synthesized by chemical method in an air atmosphere. Structural, morphology and optical properties were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-visible absorption (UV-vis) and photoluminescence (PL) spectrometer. The obtained particles are highly crystalline and monodisperse with an average particle size of 4.3-5.6nm range. A significant red shift was observed by increasing the CdS thickness in ZnS/CdS/ZnS nanocomposites. The PL position of ZnS and CdS compound is tuned in the visible region by the way of alteration layer thickness.
authors.affiliation: Department of Physics, Annamalai University, Annamalai Nagar 608 002, Tamilnadu, India. murugadoss_g@yahoo.com
authors.forename: G
authors.initials: G
authors.lastname: Murugadoss
mesh_terms: D019187:Cadmium Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D049449:Luminescence; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D013053:Spectrophotometry; D013440:Sulfides / Q000138:chemical synthesis / Q000737:chemistry*; D014961:X-Ray Diffraction; D017967:Zinc Compounds / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D019187:Cadmium Compounds; D013440:Sulfides; D017967:Zinc Compounds; C034939:cadmium sulfide; C031238:zinc sulfide