Optical and Structural Characteristics of PANI capped PbS Nanoparticles

Abstract

The modern research communities are now-a-days immensely attracted towards the semi-conductor nanoparticles due to their budding application in both traditional optical devices and new generation of nano-electronic and nano-optoelectronic devices because of their unexpected chemical and physical properties. In this present work, Lead Sulphide (PbS) nanoparticles with diameter in the range of 26–58 nm were synthesized by varying concentration of the conducting matrix Poly-aniline (PANI), using a wet Chemical technique in a non-acidic medium. The precursors used here are Lead Nitrate (Pb(NO3)2) and Sodium Sulphide (Na2S). Polyaniline (PANI) has been used as a conductive capping agent. PbS is synthesized by varying the concentration of conducting matrix PANI while keeping the reaction time constant (i.e 3 hrs). The PANI concentration has been changed from 0.5 gm to 2.0 gm in 5 different samples. Finally the synthesized samples are characterized by using various characterization techniques such as UV–Vis Spectroscopy (UV), Photoluminescence Spectroscopy (PL), X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-rayAnalysis (EDAX) and Transmission Electron Microscopy (TEM).