Synthesis and characterizations of (δ-Bi2O3)0.93(TiO2)0.07 thin films grown by PLD technique for optoelectronics

In this work (δ-Bi2O3)0.93(TiO2)0.07 nanocomposite thin films were synthesized by pulsed laser technique (PLD) onto glass substrate, XRD analysis revealed that the films have polycrystalline structure of cubic δ-Bi2O3 with preferred orientations, the chemical compositions were studied by FTIR which confirmed the presence of Bi-O-Ti and Ti-O-Bi vibration modes, AFM analysis showed the films were free of voids and cracks with RMS roughness of 10.3 nm and average grain size 55.27 nm, the optical properties indicated that the films have high transmittance (> 80%) in visible and NIR regions with high optical band gap of 3.8166 eV, these novel characteristics of this nanocomposite make it a promising optical material for optoelectronic applications.