The current study proposed outstanding thin films of NaIO₃ doped PVA with higher linear and nonlinear optical parameters using a practical, effective, simple, and low-cost approach. Polymeric thin films based on the combination of the polyvinyl alcohol (PVA), used as a matrix, with sodium iodate (NaIO₃) nanoparticles, considered a filler, were synthesized using a solution casting approach. The structural morphology of pure PVA and NaIO₃ doped PVA nanostructured films was investigated though X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM) images. The obtained XRD results concluded an increase in the crystallinity of the host PVA polymer matrix as the weight concentrations of the NaIO₃ dopants increase. SEM images illustrated the external structure morphology of the prepared films, where the cluster agglomeration shows a size increased as increasing the weight concentration of NaIO₃ in the PVA matrix. UV-Vis-NIR spectroscopy was used in this study to study the optical enhancement of the NaIO₃/PVA nanocomposites as a function of the weight concentration of sodium iodate (NaIO₃) nanoparticles. In this proposed study, it was critical to consider some of the NaIO₃/PVA optical parameters, including transmittance, absorbance, absorption and extinction coefficients, energy bandgaps, refractive index, optical and electrical conductivities, nonlinear parameters, linear and third nonlinear susceptibilities, and nonlinear refraction coefficient, as well as optical limiting effects. It was observed that with the increase in the NaIO₃ weigh concentrations, the values of the direct and indirect energy bandgaps for NaIO₃/PVA thin films decrease, compared to the host PVA matrix. The proposed NaIO₃ doped PVA nanocomposites are outstanding promising candidates to pave the way in various optoelectronic devices, taking advantage of the amazing linear optical parameters, huge nonlinear optical properties, low optical energy bandgaps, and large optical limiting.

目前的研究使用实用、有效、简单和低成本的方法提出了具有较高线性和非线性光学参数的 NaIO ₃掺杂 PVA薄膜。聚合物薄膜基于聚乙烯醇 (PVA) 的组合，用作基质，碘酸钠 (NaIO ₃ ) 纳米颗粒被认为是填料，使用溶液浇铸方法合成。通过 X 射线衍射 (XRD) 分析和扫描电子显微镜 (SEM) 图像研究了纯 PVA 和 NaIO ₃掺杂的 PVA 纳米结构薄膜的结构形态。获得的 XRD 结果表明，随着 NaIO ₃的重量浓度增加，主体 PVA 聚合物基质的结晶度增加掺杂物增加。SEM 图像说明了所制备薄膜的外部结构形态，其中簇团聚显示出随着PVA 基质中 NaIO ₃重量浓度的增加而增加的尺寸。本研究中使用紫外-可见-近红外光谱来研究作为碘酸钠 (NaIO ₃ ) 纳米颗粒重量浓度函数的 NaIO ₃ /PVA 纳米复合材料的光学增强。在这项提议的研究中，考虑一些 NaIO ₃/PVA 光学参数，包括透射率、吸光度、吸收和消光系数、能带隙、折射率、光和电导率、非线性参数、线性和三次非线性磁化率、非线性折射系数以及光学限制效应。据观察，与主体 PVA 基质相比，随着NaIO ₃重量浓度的增加，NaIO ₃ /PVA 薄膜的直接和间接能带隙值降低。拟议的 NaIO ₃ 掺杂的 PVA 纳米复合材料利用了惊人的线性光学参数、巨大的非线性光学特性、低光能带隙和大的光学限制，是为各种光电器件铺平道路的杰出候选材料。