Facile synthesis, structure analysis and optical performance of manganese oxide-doped PVA nanocomposite for optoelectronic and optical cut-off laser devices

Khairy, Yasmin; Yahia, I.S.; Ali, H. Elhosiny

doi:10.1007/s10854-020-03348-0

Cited by 30 publications

(15 citation statements)

References 58 publications

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“…The values are shown in Table 1. The E U increased from 0.99 eV to 9.79 eV with an increase in Co-metal content, indicating an increase of traps in the forbidden gap [45]. These results are consistent with the optical band gap attitude.…”

Section: Optical Band-gap and Urbach Tail Energiessupporting

confidence: 86%

Structural, Opto-Physical, Photoluminescence, and Optical Limiting Properties of Polyvinyl (Pyrrolidone and Alcohol) Blend Film Doped with Co-Metal

Elhosiny.

Khairy

Abdellahi

et al. 2022

Physics of the Solid State

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The optical properties of polyvinyl (pyrrolidine and alcohol) and PV(P/A) blend polymer have been improved using Co-metal as a filler for optoelectronic and optical shielding applications. The casting technique of solutions was used in order to prepare composite films with different Co-ratios (x: 0-18.5). XRD, FT-IR, SEM, and UV-visible spectrophotometry were operated to study the structure, morphology, and optical features of the flexible plain blend and composite films. The semi-crystalline nature of the films was influenced by the filler ratio of nanoparticles. Homogenous dispersion with some agglomeration of Co-particles has been observed in the host blend matrix. Then again, a successful interaction between the host matrix and particles was ensured by the FT-IR spectroscopic and XRD measurements. The cut-off absorbance edge of composite films is red-shifted from 200 nm (host blend) to 228 nm. The indirect transition optical band gap was confirmed from the Tauc's and optical dielectric loss calculations. Its value goes back from 5.15 eV (plain blend) to 4.43 eV for 18.5 wt% Co-blend composite film. An improvement in the extinction coefficient, optical conductivity, and refractive index of the composite films was achieved compared with the plain blend. The non-linear parameters of the composites were also enhanced. Photoluminescence (PL) emission spectra of PV(P/A) blend films doped with various weight percentages of Co-metal were examined at a wavelength of 750 nm. The optical shielding performance of the prepared composites is recommended for laser cut-off. Furthermore, the ability to tailor the optical properties of blend film makes it more effective for various applications including optical devices, non-linear optoelectronics, and reflective coating. Keywords: extinction coefficient, PV(P/A) polymer blend, transition band gap, photoluminescence, NL optical parameters, optical shielding.

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Section: Optical Band-gap and Urbach Tail Energiessupporting

confidence: 86%

Structural, Opto-Physical, Photoluminescence, and Optical Limiting Properties of Polyvinyl (Pyrrolidone and Alcohol) Blend Film Doped with Co-Metal

Elhosiny.

Khairy

Abdellahi

et al. 2022

Physics of the Solid State

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“…[ 1,5,17–19 ] It is worth mentioning that the presence of the hydroxyl groups in the PVA structure causes its semi‐crystallinity and the polarity natures. [ 20–22 ] While the relatively large energy band gap (~5.4 eV [ 23 ] ) causes its high optical transparency (>85%) in the Vis‐NIR regions. [ 24 ] These features makes PVA as an exclusive host matrix for a lot of materials.…”

Section: Introductionmentioning

confidence: 99%

The effect of iron oxide content on the structural and optical parameters of polyvinyl alcohol/graphene nanocomposite films

Badawi

Alharthi

Althobaiti

et al. 2021

Vinyl Additive Technology

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The effect of iron oxide nanoparticles (Fe2O3 NPs) content on the structural and optical parameters of polyvinyl alcohol/graphene (PVA/G) blend has been investigated. Fe2O3 NPs were synthesized by the hydrothermal procedure. Nanocomposite (NC) films of PVA/G filled with different amounts of Fe2O3 NPs were equipped using the solution casting technique. The surface morphology, structural, and optical properties were examined by scanning electron microscope (SEM), X‐ray diffraction (XRD), and ultraviolet‐visible‐near‐IR (UV‐Vis‐NIR) spectrophotometry techniques, respectively. SEM micrographs reveal the homogenous distribution of Fe2O3 NPs in the PVA/G matrix. The XRD analysis exhibits the formulation of the hematite phase of Fe2O3 NPs and the semi‐crystalline nature of PVA/G NC films. The UV‐Vis‐NIR data analysis shows that the optical properties of the PVA/G blend could be tailored via Fe2O3 NPs filling. Wemple–DiDomenico model is utilized to explore the dispersion parameters of the prepared NCs. A significant effect of Fe2O3 NPs filling is realized on the oscillator and dispersion energies, infinite refractive index, dielectric constant, average oscillator strength and the lattice dielectric constant of the NC films. PVA/G filled Fe2O3 NPs are suggested for different optical and storage applications.

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“…7a curve "a". Peak observed at 31 These peaks suggest formation of CdS and Ag nanostructures within PVA matrix. Diffracted X-rays corresponding to 19.62°are noticed to became less intense after incorporation of nanostructures because of interactions between nanostructures and PVA.…”

Section: X-ray Diffraction (Xrd) Analysismentioning

confidence: 97%

PVA/CdS-Ag Nanocomposites: Effect of Composition and UV Radiation on Optical, Electrical and Structural Properties

Nain,

Dhanda,

Chahal

et al. 2024

ECS J. Solid State Sci. Technol.

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PVA incorporated with different content of CdS-Ag nanostructures were prepared using a chemical reduction technique. Along with this these nanocomposites were exposed to UV radiated for different times. The X-ray spectra of PVA /CdS-Ag nanocomposites indicated the formation of CdS and Ag nanostructures within PVA. Changes in the band structure of nanocomposites with and without UV exposure were studied by UV-Visible spectroscopy. Absorbance and refractive index showed incremental increases with the concentration of nanostructures and time of exposure. In addition, the behaviour of different optical parameters such as E˳ and Ed was investigated. Field-emission scanning electron microscopy and energy-dispersive X-ray analysis showed microstructural modification occurring in the nanocomposites due to changes in the concentration of incorporated nanostructures and UV radiation. The influence of concentration and UV exposure on conductivity and dielectric parameters on PVA/CdS-Ag nanocomposites was studied.

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Facile synthesis, structure analysis and optical performance of manganese oxide-doped PVA nanocomposite for optoelectronic and optical cut-off laser devices

Cited by 30 publications

References 58 publications

Structural, Opto-Physical, Photoluminescence, and Optical Limiting Properties of Polyvinyl (Pyrrolidone and Alcohol) Blend Film Doped with Co-Metal

Structural, Opto-Physical, Photoluminescence, and Optical Limiting Properties of Polyvinyl (Pyrrolidone and Alcohol) Blend Film Doped with Co-Metal

The effect of iron oxide content on the structural and optical parameters of polyvinyl alcohol/graphene nanocomposite films

PVA/CdS-Ag Nanocomposites: Effect of Composition and UV Radiation on Optical, Electrical and Structural Properties

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