Optical properties of PVC composite modified during light exposure to give high absorption enhancement

Abed, Rasheed N.; Yousif, Emad; Abed, Abdul Rahman N.; Rashad, Alaa A.; Hadawey, Abas; Jawad, Ali H.

doi:10.1016/j.jnoncrysol.2021.120946

Cited by 25 publications

(8 citation statements)

References 46 publications

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“…Figure (4) shows the magnitudes of the skin depth (x) for the pure PVC and doped PVC-Organosilane (comp1 and comp2), there are some peaks in the curves of pure PVC and doped PVC-Organosilane comp2 and this means at these peaks, the absorption vanishes within these regions between the wavelength range (400≥x ≥500 and 500≥T ≥600 nm) and continuous after these peaks, they have name the cut-off wavelength regions (λcutoff). But, the curve of PVC-Organosilane comp1 has no peak and this means has a high absorption compared with the other curves and which is the best [5].…”

Section: Pure Pvc and Pvc-organosilane Skin Depthmentioning

confidence: 93%

“…The refractive index (n), reflectance (R), and extinction factor (k) are present in Figure (5) which compares the refractive indices (n) of pure PVC and doped PVC-Organosilane with respect to wavelength (comp1 and comp2). this is attributed to the irregular scattering of organosilane through this region between (500≥λ ≥600 nm).…”

Section: Refractive Index Of Pure Pvc and Pvc-organosilanementioning

confidence: 99%

“…Polymer for example PVC has appeal due to their potential that used in the light emitting diode, electrochemical cells, and solar cells, all these applications are provided by doping the polymer with nanomaterials and organic compounds implanted in its lattice, and then should be computed the optical properties of it. This is absolutely significant to enrich the electrical features of polymer PVC and find out the band gap with the conductivity of these composites [5].…”

Section: Introductionmentioning

confidence: 99%

“…Figure(5) exhibits the refractive index (n) has high values at low values of wavelength, this is attributed to the irregular scattering of organosilane through this region between (500≥λ ≥600 nm). And then, the refractive index (n) continuously increases along the increased wavelength of the pure PVC and doped PVC-Organosilane (comp1 and comp2).…”

mentioning

confidence: 96%

“…Figure(5) Refractive index vs wavelength of the pure PVC and doped PVC-Organosilane (comp1 and comp2).…”

mentioning

confidence: 99%

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Optical Features of PVC Polymer Thin Films Doped by Compound Organosilane to Raise the Absorbance of Samples Driven to the Light

Al‐Mashhadani

Abed

Yousif

et al. 2023

Preprint

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The novel work for this study is to make new films for the pure and doped PVC with organosilane thus it was used organosilane moieties (25 mg) were mixed with poly(vinyl chloride) (5 g). Thus drop-casting procedure was utilized to make these thin films. The pure PVC and PVC-Organosilane optical properties were studied under the wavelength range from (250–1300 nm) using diffusive reflectance equipment. The optical properties like absorption increased up to (87–95%), while reflectance and transmittance decreases when added organosilane molecules. Furthermore, the dielectric constant (real and imaginary) and optical conductivity enhanced, respectively. On the other hand, Urbach energy increases when adding organosilane to PVC structure, furthermore, skin depth, refractive index, and optical density were figured. The energy gap is reduced from 4 eV to 2.3 eV for the direct transition and from 3.9 eV to 1.6 eV for the indirect transition. SEM analysis was implemented over thin films of pure PVC and PVC-Organosilane to see the morphology of these surfaces. The AFM analysis was utilized to exhibit the topography of the surfaces. Thereby, finding the surface roughness and the root means square of the surface for these thin films. The improvement for these thin films is used in many applications such as photostability and absorption the light when used in radars applications.

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Section: Pure Pvc and Pvc-organosilane Skin Depthmentioning

confidence: 93%

Section: Refractive Index Of Pure Pvc and Pvc-organosilanementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 96%

“…Figure(5) Refractive index vs wavelength of the pure PVC and doped PVC-Organosilane (comp1 and comp2).…”

mentioning

confidence: 99%

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Optical Features of PVC Polymer Thin Films Doped by Compound Organosilane to Raise the Absorbance of Samples Driven to the Light

Al‐Mashhadani

Abed

Yousif

et al. 2023

Preprint

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Synthesis, Structural, and Optical Properties of Modified Poly(vinyl Chloride) Thin Films by Ethylenediamine Loaded with Metal Oxide Nanoparticles

Abed,

Rashad,

Hayawi Rahman

et al. 2024

ChemistrySelect

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Poly (vinyl chloride) (PVC) films modified with ethylenediamine (en) and doped by nanoparticles (TiO2, ZnO, NiO, and MgO). A mixture of 0.5 g PVC/en dissolved in THF and 0.01 wt % of nanoparticles were used in doping PVC to produce the nanocomposite films. All modified PVC films were characterized by different analysis techniques such as Fourier Transform Infrared (FTIR), Nuclear Magnetic Resonance Spectrometer (NMR), diffusive reflectance spectroscopy (DRS), X‐ray diffraction analysis (XRD), and scanning electron microscopy (SEM). The DRS was used to analyse the scattered IR energy of the samples at wavelengths between (250–1350 nm). The optical properties and oscillator strength were also studied, the transmittance and reflectance values declined for the PVC films, and the absorption coefficient was observed between (79–89 %). The direct energy gap decreased from 4.6 to 1.9, and the indirect energy gap reduced from 4.3 to 1.9. The XRD exhibited a semi‐crystalline structure and the SEM test exhibited a porous structure of all samples. The Urbach energy was increased from 0.8772 eV to 14.712 eV, single oscillator energy ( ) was also increased from 6.38 eV to 13.69 eV and the dispersion energy increased from 23.40 eV to 70.63 eV. Moreover, the surface roughness parameters Ra and Rq of the PVC films in modified and doping were increased from 3.86 nm to 8.14 nm, and 5.08 nm to 10.10 nm respectively. So, PVC results show increased optical properties after modification with en and doping by NPs are used in the light conversion and aerospace industries.

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Investigations on electronic and optical properties of Zn:CdO-PVDF polymer composite thin films

et al. 2022

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Optical properties of PVC composite modified during light exposure to give high absorption enhancement

Cited by 25 publications

References 46 publications

Optical Features of PVC Polymer Thin Films Doped by Compound Organosilane to Raise the Absorbance of Samples Driven to the Light

Optical Features of PVC Polymer Thin Films Doped by Compound Organosilane to Raise the Absorbance of Samples Driven to the Light

Synthesis, Structural, and Optical Properties of Modified Poly(vinyl Chloride) Thin Films by Ethylenediamine Loaded with Metal Oxide Nanoparticles

Investigations on electronic and optical properties of Zn:CdO-PVDF polymer composite thin films

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