Effect of MWCNT Concentration on Characteristics of Bi2O3/MWCNT Nanocomposite Films Prepared by Pulsed-Laser Deposition

Abstract

In this paper, pure Bi₂O₃ and Bi₂O₃/MWCNT thin films were prepared with concentrations of MWCNT in the ratios of 0.5, 1, and 2 wt.% by the pulsed-laser deposition (PLD) method on glass substrates to characterize and analyze their topography, morphology and optical properties. It was shown that all prepared films have a polycrystalline nature with tetragonal β-Bi₂O₃ structure. The grain size increases with increasing MWCNT concentration. The absorbance of the prepared films was found to increase with increasing MWCNT concentration, but the band gap values decrease from 2.8 to 2.0 eV.