Linear and Nonlinear Optical Properties of PVA:SA Blend Reinforced by TiO2 Nanoparticles Prepared by Flower Extract of Aloe Vera for Optoelectronic Applications

In this study, a polyvinyl alcohol–sodium alginate blend, PVA:SA 3:1 (w:w), was doped with different contents of TiO2 nanoparticles (NPs) prepared by aloe vera leaf extract to form the investigated nanocomposites. The nonlinear parameters third-order susceptibility (χ(3)) and refractive index (n2) were detected using UV-Vis spectroscopy Z-scan techniques. Some optical also determined, including (n), dielectric parameters, volume surface energy loss functions, some others. best solar skin protection factor (SSPF) 5 wt.% NPs in 3:1, which about 84.6% compared corresponding value host blend (41%). studied nanocomposites examined for their utility limiting CUT-OFF laser filters utilizing continuous He-Ne working at 632.2 nm. As result, our finding demonstrated that positively influences light blocking source. Using estimated gap energies values, models used deduce theoretical values linear (n). presence Ti peaks EDX spectrum confirmed doping SEM showed are homogeneously dispersed through agglomerates. XRD spectra lattice strain εstr. 2ϴ = 19.78° 0.058, 0.055, 0.060, 1, 3, blend.