Synthesis and unraveling the optical and electronic characteristics of PVA/Co₂O₃/Fe₂O₃ hybrid nanostructures for promising nanoelectronics and photonics applications

The current work aims to produce of new nanostructured films from cobalt oxide (Co₂O₃)/iron oxide (Fe₂O₃) nanostructures doped polyvinyl alcohol (PVA) as a promising nanocomposites materials to utilize in numerous quantum electronics and optical nanodevices. The structure, optical, and electronic characteristics of PVA/Co₂O₃/Fe₂O₃ nanostructured films were investigated. The structure properties included optimization, FTIR and optical microscope. The optical characteristics results indicated that the absorption increased of 91.3% at UV-spectra (λ = 360 nm) with rising of the Co₂O₃/Fe₂O₃ NPs content to 5.7 wt%. The energy gap decreased of 55.3% when the Co₂O₃/Fe₂O₃ NPs content reached of 5.7 wt% where it reduced from 4.03 to 1.8 eV, this performance make them appropriate for may optoelectronics nanodevices like transistors, photovoltaic cell, electronic gates, diodes and other applications. The optical parameters: absorption coefficient (α); refractive index (n); extinction coefficient (k); real (ε₁) and imaginary (ε₂) dielectric constants and optical conductivity (σ_op) of PVA enhanced with an increase in the Co₂O₃/Fe₂O₃ NPs content. Finally, obtained results showed that the PVA/Co₂O₃/Fe₂O₃ nanostructured films have excellent electronic and optical properties which make them as promising nanomaterials to employ in many quantum electronics and optical nanodevices.