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    STUDIA CHEMIA - Issue no. 2%20(Tom%20I%20 / 2010  
         
  Article:   STUDIES ON THE SYNTHESIS OF MANGANESE DOPED ZINC SULPHIDE NANOCRYSTALLINE POWDERS.

Authors:  ADRIAN-IONUŢ CADIŞ, ELISABETH-JEANNE POPOVICI, ECATERINA BICA, LUCIAN BARBU TUDORAN.
 
       
         
  Abstract:  

New synthesis precipitation technique to prepare nanoparticles of Mn-doped zinc sulphide ZnS:Mn2+ have been attempted. Various capping agents have been used to control the morphostructural properties of ZnS:Mn2+ particles. Infrared absorption spectroscopy (FT-IR), photoluminescence spectroscopy (PL), scanning (SEM) and transmission electron microscopy (TEM) were used to characterise the powder samples. Strong luminescent ZnS:Mn2+ nanocrystalline powders could be precipitated at room temperature, from sodium sulphide and zinc-manganese acetate solutions, using the reagent simultaneous addition technique-SimAdd and methacrylic acid or sodium dodecyl sulphate as passivating agent.

 

Keywords: ZnS nanoparticles, Mn-doped nanoparticles, photoluminescence.

 
         
     
         
         
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