Optical, electrical and structural properties of Fe doped sodium titanate nanostructures
By Esteves, Martín; Fernández-Werner, Luciana; Cid, Cristiani Campos Plá; Pelegrini, Silvia; Pasa, André A.; Faccio, Ricardo; Mombrú, Álvaro W.
Published in Applied Surface Science
2021
Abstract
In this work we present the synthesis, optical and electrical characterization of nanoparticles of iron doped anatase and iron doped sodium titanate high aspect ratio nanostructures (Na2Ti2O5·H2O). Our study focused mainly in the study of the electronical structure and the derived properties of the dielectric function by DFT (Density Functional Theory) means and their relationship with experimental measurements of optical band gap and electric impedance spectroscopy. Also, structural and morphological characterizations of the systems were carried on by X-ray powder diffraction, high resolution transmission electron microscopy and Raman spectroscopy. It was possible for the doped nanostructures to observe a slight red shift in the band gap of about 0.2 eV and an order of magnitude decrease in the global resistance in the doped system.