PREPARATION AND CHARACTERIZATION OF PB1-XZNXS NANOPARTICLES

Abstract

In our present work Pb1-xZnxS (x = 0, 0.02%, 0.05%, 0.1%, 0.15%) nanocrystals were synthesized successfully using wet chemical method. The effect of Zinc on
the structural and optical properties of Lead Sulphide were studied using powder XRD, FE- SEM, EDAX, FTIR and UV-Visible spectroscopy. The XRD patterns confirmed the face centered cubic structure of the undoped and doped PbS nanocrystals and the particle size are comparable with the exciton Bohr radius of PbS. FE-SEM results confirmed that the nanocrystals are spherically shaped and are agglomerated. EDAX spectrum confirmed the formation of Pb1-xZnxS (x = 0, 0.02%, 0.05%, 0.1%, 0.15%) nanocrystals. The functional groups present in the material are studied with the help of FTIR spectrum. UV-Visible spectroscopy of the prepared samples were examined and the optical bandgap of the material were blue shifted as the doping concentration increases.