Linear and nonlinear optical characteristics of PVA/CMC/PEG blended polymer loaded with ZnS formed at different temperatures

The most efficient way to create novel materials that may be used in a variety of optoelectronic applications is thought to be doped mixed polymers with appropriate fillers. Undoped and doped PVC polymers with ZnS/Mn formed at different temperatures were fabricated using the casting method. The Rietveld method was used to discover the structure and microstructure of Zn0.95Mn0.05S prepared at T = 300, 400, and 500 °C. The distribution and existence of the nanofiller over the PVC matrix were determined via XRD, FTIR, EDS, and SEM techniques. The effect of the preparation temperatures of the ZnS/Mn nanofiller on the absorption, transmittance, reflectance, refractive index, extinction coefficient, dielectric constant, AC conductivity, electrical modulus, and DC conductivity activation energy data of the PVC polymer was studied using the diffused reflectance technique. Doping PVC with ZnS/Mn (prepared at 300 °C) lowered the direct and indirect optical band gaps from 5.4 and 4.52 eV to minimum values of 4.55 and 3.63 eV. The fluorescence intensity of pure PVC is greatly enhanced upon loading with ZnS/Mn. The PVC exhibited two near UV peaks, one violet and one blue color, while, in addition, the doped polymers exhibited green and orange colors. The corresponding CIE diagram for all the samples was also determined.

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“…Before performing additional calculations, the R values were adjusted using the same way described in Ref. [25].…”

Section: Synthesis Proceduresmentioning

confidence: 99%

Impact of ZnS/Mn on the Structure, Optical, and Electric Properties of PVC Polymer

et al. 2023

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“…The UV, violet and blue colors may be attributed to the electronic transitions π → π* of free -OH groups of PVA. [50][51][52] The CMC emission could be the cause of the blue color. 53 PVP displayed a blue color which associated with the π*→π band transition in PVP molecules, 54 while the presence of C=O and N-C groups in PVP was thought to be responsible for the UV color.…”

Section: Resultsmentioning

confidence: 99%

Optical and Dielectric Features of PVA/CMC/PVP/ZnMn₂O₄/CuCo₂O₄/x wt% MWCNTs Blended Polymers for Optoelectronic Applications

Heiba,

El-naggar,

Kamal

et al. 2024

ECS J. Solid State Sci. Technol.

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This study is devoted to optimizing the optical and dielectric parameters of polyvinyl alcohol (PVA)/ carboxymethyl cellulose (CMC)/ polyvinylpyrrolidone (PVP) blended polymer by adding ZnMn2O4/CuCo2O4 nanocomposite and controlling the amounts of multi-walled carbon nanotubes (MWCNTs) to engage them in flexible optoelectronics and storage energy capacitors. Herein, 0.9ZnMn2O4/0.1CuCo2O4 was synthesized by co-precipitation and hydrothermal methods and loaded with different ratios of MWCNTs into PVA/CMC/PVP blend to produce films by solution casting procedure. The crystallite size of 0.9ZnMn2O4/0.1CuCo2O4 was determined using transmission electron microscopy. The structures of the filler and doped blends were explored via the X-ray diffraction technique. The optical features of undoped and doped blends were explored by diffused reflectance and fluorescence spectrophotometers. The addition of ZnMn2O4/CuCo2O4 to PVA/CMC/PVP caused a decline of direct and indirect optical band gaps from 5.33 and 5.03 eV to 5.19 and 4.66 eV, respectively. By adding different amounts of MWCNTs, the direct/indirect optical band gap reduced irregularly, and they attained their minimum values (5.07, 4.46) eV as it doped with 0.6 Wt% MWCNTs. The highest values of refractive index, extinction coefficient, optical conductivity and nonlinear optical parameters were achieved in the blend containing ZnMn2O4/CuCo2O4/0.6 Wt% MWCNTs. It is also found that the dielectric constant and ac conductivity rose with the insertion of ZnMn2O4/CuCo2O4/0.6 Wt% MWCNTs. The highest energy density value was found in the polymer blend of PVA/CMC/PVP/ZnMn2O4/CuCo2O4/0.8 Wt% MWCNTs blended polymer. Electrical modulus and Nyquist plots for different blends were also examined. The results recommend the doped blends as a good candidate for optoelectronics and energy storage capacitor applications.

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“…In recent years, the process of blending different polymers and fabrication of polymer nanocomposites has greatly found wide significance as the easiest option for tailoring materials and creating new systems for a wide range of daily applications 1,2 . Besides, it is a charming solution for tuning the physical and chemical properties of materials for specific end uses 3,4 . Based on the great tunability of physicochemical properties of polymer nanocomposites (PNC) that yield astonishing optical, electrical, and dielectric properties, these PNC found great applications, such as energy storage devices, flexible electronics, 5 optoelectronics, 6 antimicrobial activity, 7 food packing, 8 and eco‐friendly transparent packaging 9 .…”

Section: Introductionmentioning

confidence: 99%

Engineering the optical, and dielectric properties of (PVA: PVP)/BaSnO₃ polymer nanocomposites as promising films for optoelectronics and energy storage applications

Al‐Sulami,

Al‐Nashri,

Al‐Mhyawi

et al. 2024

Polymers for Advanced Techs

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This work is devoted to optimizing the optical and dielectric parameters of polyvinyl alcohol (PVA): polyvinyl pyrrolidone (PVP) (1:1) polymer nanocomposites by controlling barium stannate contents (BaSnO3) aspiring to engage it into flexible optoelectronics and thermally stable capacitors. Herein, high purity BaSnO3 was synthesized by solid‐state route and loaded with different ratios (5–20 wt%) into PVA/PVP blend to form films by solution casting method. Further, the degree of crystallinity (Xc) was highly increased upon increasing the filler contents (BaSnO3), as confirmed by X‐ray diffractometer measurement. The surface morphology pictured by a field emission scanning electron microscope revealed the variation of the surface from smooth to rough surface upon insertion of BaSnO3. The thermodynamic parameters including enthalpy (ΔH), entropy (ΔS), and Gibb's free energy (ΔG) were extracted from TGA measurements and studied in detail. The optical characteristics of plain PVA/PVP and polymer nanocomposite films are explored by UV–Vis–NIR spectrophotometer. The presence of charge‐transfer complexes within the polymer nanocomposites was certified via shifting of band gap energy from 5.02 to 4.33 eV and variation of band tailing energy (Eu) from 0.22 to 0.44 eV. The real and imaginary part of optical conductivity (σp1, σp2) was confirmed to be enhanced with the insertion of BaSnO3. It is also found that the dielectric constant and DC current increased with the insertion of BaSnO3 content, while the dielectric loss decreases. The findings recommend these polymer nanocomposites as a good candidate for green energy applications and high‐performance capacitors.

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Linear and nonlinear optical characteristics of PVA/CMC/PEG blended polymer loaded with ZnS formed at different temperatures

Cited by 17 publications

References 46 publications

Impact of ZnS/Mn on the Structure, Optical, and Electric Properties of PVC Polymer

Impact of ZnS/Mn on the Structure, Optical, and Electric Properties of PVC Polymer

Optical and Dielectric Features of PVA/CMC/PVP/ZnMn₂O₄/CuCo₂O₄/x wt% MWCNTs Blended Polymers for Optoelectronic Applications

Engineering the optical, and dielectric properties of (PVA: PVP)/BaSnO₃ polymer nanocomposites as promising films for optoelectronics and energy storage applications

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Linear and nonlinear optical characteristics of PVA/CMC/PEG blended polymer loaded with ZnS formed at different temperatures

Cited by 17 publications

References 46 publications

Impact of ZnS/Mn on the Structure, Optical, and Electric Properties of PVC Polymer

Impact of ZnS/Mn on the Structure, Optical, and Electric Properties of PVC Polymer

Optical and Dielectric Features of PVA/CMC/PVP/ZnMn2O4/CuCo2O4/x wt% MWCNTs Blended Polymers for Optoelectronic Applications

Engineering the optical, and dielectric properties of (PVA: PVP)/BaSnO3 polymer nanocomposites as promising films for optoelectronics and energy storage applications

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Product

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Optical and Dielectric Features of PVA/CMC/PVP/ZnMn₂O₄/CuCo₂O₄/x wt% MWCNTs Blended Polymers for Optoelectronic Applications

Engineering the optical, and dielectric properties of (PVA: PVP)/BaSnO₃ polymer nanocomposites as promising films for optoelectronics and energy storage applications