A novel polymer/ceramic composite film for different optical applications: optical linear, nonlinear, and limiting properties

Abstract

New composite films based on ceramic/polymeric matrix materials were synthesized using facile casting procedures for different optical devices. Herein, the composite comprises a semi-crystalline polymer (Polyvinyl alcohol, PVAL) embedded with various weight percentages of PbTiO3. The structure and surface morphology change of PVAL were studied via XRD (Diffraction of x-ray) and SEM (Microscopy of Scanning Electron) analysis. The interactions between PVAL and PbTiO3, via the matrix’s hydroxyl group, demonstrate a significant reduction in polymer crystallinity. Different parameters, such as internal strain, dislocation density, and crystallite size, were estimated from the XRD Gaussian fitting. SEM images show that the particles’ agglomeration increased on the composite’s surface with the doping ratio, which can influence the PVAL optical properties. The energy of the bandgap is estimated using absorption fitting and Tauc’s relations. Nonlinear and refractive indices parameters- energy gap relations were studied. The nonlinear parameters χ (3) and n 2 increased with rising the percentage of PbTiO3 in the PVAL matrix from 0.935 × 10−12 esu to 1.978 × 10−12 esu, and 1.67 × 10−11 esu to 3.29 × 10−11 esu. Moreover, the high-frequency dielectric ( ε ∞ ) changes from 4.421 to 5.125. The behavior of optical limiting for the composites shows a decrease of He-Ne and green laser power. The present results indicate that the polymeric/ceramic films can be promising materials for laser CUT-OFF, optical fibers, and micro-optics applications.

Fabrication, microstructure, and nonlinear/linear optical parameters of polymeric‐based poly(vinyl alcohol)/poly(vinyl pyrrolidone) nanocomposites films for optical attenuation applications

“…The absorption edge is noticed in the UV region with ascending shift toward the visible region 7,27 . The dependence of absorption spectra in the UV‐range on the incident wavelength is dependent on the following electronic transitions (n → π*) and (π → π*) types between the HOMO and LUMO molecular orbitals of the carbonyl group (CO) in the PVP chains and the hydroxyl group OH) in the PVA chains 2,28–30 . The realistic behavior of the fabricated PVP/PVA blends to absorb the incident probe wave ascending in accordance with the increasing of PbS NPs as a nanofiller may be useful as a bolster in UV‐blocking applications and/or visible light attenuations 31 .…”

“…PVA film has excellent features, including good thermal stability, excellent chemical resistance, and further strong flexibility, while PVP polymeric thick film is weak to be subjected to mechanical effects such as bending and stretching. PVP and PVA blends have excellent electrical insulating properties and were utilized as flexible dielectric layer in production of several organic optoelectronics such as ultra‐thin filed effect transistors and other organo‐electronic applications 2 . The functional polar groups carbonyl (C=O) and hydroxyl (‐OH) are included in the backbone‐chain of the PVP and PVA, respectively.…”

Microstructure Study And Linear/Nonlinear Optical Properties of Bi-Embedded PVP/ PVA Films For Optoelectronic And Optical CUT-OFF Applications

“…Optical limiters are devices made to filter the incident electromagnetic waves [11]. The protection of optical sensors and components from laser deterioration is one of the most commonly used application fields of this effect [57].…”

“…The variation in the output power values between the two sources is due to the composite film's reaction sensitivity to incident light. A sample with greater Bi-metal nanopowder concentrations has more molecules per unit volume in the blend matrix, which participates in the optical interactions during nonlinear absorption mechanisms [11]. Consequently, the OLC of polymer films is correlated with the sample's ability to absorb and the scatter light.…”

“…Moreover, PVA has particular features such as semi-crystalline, adhesive properties, and water-soluble. It is suitable for a wide range of scientific, biomedical, and technological applications [8][9][10][11]. However, another polymer material with an amorphous structure, biological compatibility, soft processing capability, good environmental stability, and outstanding solubility is poly (vinyl pyrrolidone) (PVP) [(C6H9ON)n], which makes it suitable for a variety of applications such as optics and photonics [2,6].…”