Publication

Abstract : Tin oxide (SnO2) and Iron doped tin oxide (Sn1-xFexO2 (x=0.05, 0.10wt%)) nanoparticles were synthesized by simple sol-gel method. The structural characterization performed using X-ray Diffraction (XRD) confirmed the tetragonal rutile phase of the nanoparticle. The variation in lattice parameters and relative intensity with Fe doping validated the incorporation of Iron into the lattice. The compressive strain present in lattice estimated using peak profile analysis using Williamson-Hall plot also exhibited influence of grain boundary formation in the lattice. The radiative recombination and quenching observed in optical characterization done using Photoluminescence spectra (PL) and shift in the band gap estimated from UV-Visible Diffused Reflectance Spectroscopy corroborated the grain boundary influence. Raman spectroscopy and the morphological analysis done using a Field emission scanning electron microscope (FESEM) also reinforced the formation of grain boundaries. The compositional analysis done using Energy Dispersive X Ray Spectroscopy (EDAX) confirmed Fe in SnO2 lattice. The conductivity studies performed exhibited an increase of impendence with increased doping concentration and a decrease in the loss factor at high frequencies with increased doping concentration which makes it a potential candidate for device applications