Preparation and Optical Characterization of PAAm/TiO₂ Nanocomposites for Optoelectronic Applications

The synthesis and optical characterization of PAAm/TiO₂ nanocomposites made using the solution casting method for optoelectronic applications are the main objectives of this work. Improved light-matter interaction inside the polymer matrix is indicated by the optical research, which shows a discernible increase in ultraviolet (UV) absorption with increasing TiO₂ nanoparticle loading. Additionally, when the concentration of TiO₂ nanoparticles increases, the optical constants of the nanocomposite films, such as the refractive index and extinction coefficient, show a consistent rise. On the other hand, when nanoparticle loading increases, the PAAm/TiO₂ nanocomposites' optical transmittance and optical energy band gap diminishes. This can be explained by the creation of localized states and enhanced charge carrier interactions. These results demonstrate that the incorporation of TiO₂ nanoparticles effectively tailors the optical properties of PAAm, highlighting the potential of PAAm/TiO₂ nanocomposites for optoelectronic device applications.