Thermal, structural, optical and electrical conductivity studies of pure and Fe<sup>3+</sup> ions doped PVP films for semoconducting polymer devices

Sreekanth, K.; Siddaiah, T.; Gopal, N.O.; Kumar, Y. Madhava; Ramu, Ch.

doi:10.1080/14328917.2020.1744346

Cited by 21 publications

(14 citation statements)

References 34 publications

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“…A lot of previous works were focused on filling polymers with such materials for specific issues. For example, Sreekanth et al [ 33 ] concluded that the optical and electrical properties of PVP polymer could be enhanced via filling with Fe 3+ for battery applications. Also, the optical properties of the PVP/PVA blend were enhanced by Al 2 O 3 filling for optoelectronic applications.…”

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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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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show abstract

“…At lower frequencies, conductivity is lower due to interfacial impedance or polarization of space charge. As the frequency increases, more charge builds up at the electrode and electrolyte interface, the number of mobile ions increases, and as a result conductivity increases [35] . As seen in Figure 5c, when the added graphene percentage was about 3–5 %wt, a very significant change occurred in the curves.…”

Section: Resultsmentioning

confidence: 91%

“…As the frequency increases, more charge builds up at the electrode and electrolyte interface, the number of mobile ions increases, and as a result conductivity increases. [35] As seen in Figure 5c, when the added graphene percentage was about 3-5 %wt, a very significant change occurred in the curves. The electrical conductivity of the composites increased with the increase in filler content.…”

Section: Chemistryselectmentioning

confidence: 77%

Dielectric Biodegradable Biopolymer‐Based Graphene Nanocomposites for Use in the Packaging Industry and Capacitor Application

Gürler

Torğut

2022

ChemistrySelect

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In this study, polyhydroxyalkanoate (PHA) and polylactic acid (PLA)‐Graphene (G) nanocomposite films were synthesized by taking different concentrations of G via the solution casting process, and their structural, mechanical, opacity, thermal and dielectric properties were examined for the first time. Scanning electron microscopy (SEM) was used for investigating surface morphology. Films containing graphene were more opaque than films without graphene. The incorporation of graphene into the polymer matrix improved the mechanical property. The tensile strengths of the control PHA/PLA film and the graphene‐reinforced 1 %G‐PHA/PLA nanocomposite films were 18.98 and 24.34 MPa, respectively. Thermogravimetric analysis results showed that PHA/PLA−G nanocomposites had good thermal stability below 300 °C. Considering the dielectric measurements, it is seen that the dielectric constant (έ) and dielectric loss (ϵ”) decreased with increasing frequency and less changed at higher frequencies. The developer feature of graphene is remarkable in both parameters. The electrical conductivity of PHA/PLA−G nanocomposites was also examined as a function of frequency at room temperature. As the amount of G increased from 1 %wt to 5 %wt, the conductivity of the composites increased.

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“…The depressed semicircle of the plot indicates that the non-debye nature of the electrolyte. 37 The amorphous nature of polymer provides the high conductivity, when high conductivity occurs more numbers of ions are migrated from the blend polymer system of PVP/ cassava starch, it shows higher conductivity and it is 8.96 × 10 −6 S/cm for 80:20:02 system at 303K. When increasing the temperature 303K −363K, the conductivity of blend polymer systems is increased upto the value of 1.08 × 10 −5 S/cm at 363K because of free volume at higher temperatures.…”

Section: Impedance Analysismentioning

confidence: 99%

Studies on structural, electrical and electrochemical properties of biodegradable PVP/starch blend polymer electrolytes with ammonium ceric nitrate for energy storage devices

Priya

Muthuvinayagam

Ramesh

2022

Energy & Environment

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As a new approach, biodegradable solid polymer blend polymer electrolytes are prepared using a synthetic polymer Poly [vinyl pyrrolidone] (PVP) and a biopolymer Starch with constant amount of Ammonium ceric nitrate. The Biopolymer starch is used to enhance the biodegradability of the polymer membranes. The polymer electrolytes are prepared by solution casting method using deionized water as solvent. The prepared electrolytes are analyzed with structural, vibrational, electrical and electrochemical behavior by using different characterization techniques. The amorphous nature of the blend polymer electrolytes has been confirmed by X-Ray diffraction (XRD) analysis. PVP/cassava starch/ammonium ceric nitrate polymer electrolyte shows high amorphous nature. In FTIR study, polymers-salt complexation and molecular vibrations are observed in the electrolytes. The ionic conductivity and dielectric measurement of the electrolytes are carried out by impedance spectroscopy. The maximum ionic conductivity of 8.1 × 10−6 S/cm is observed at room temperature for 80% PVP: 20% cassava starch: 2% ammonium ceric nitrate (ACN) system. The dielectric properties of the prepared polymer electrolytes are also analyzed. The electrolyte having higher ionic conductivity is tested with cyclic voltammetry (CV) and linear sweep voltammetry (LSV) studies that reveal the electrochemical properties and range of potential window of the polymer electrolyte.

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Thermal, structural, optical and electrical conductivity studies of pure and Fe³⁺ ions doped PVP films for semoconducting polymer devices

Cited by 21 publications

References 34 publications

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

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

Dielectric Biodegradable Biopolymer‐Based Graphene Nanocomposites for Use in the Packaging Industry and Capacitor Application

Studies on structural, electrical and electrochemical properties of biodegradable PVP/starch blend polymer electrolytes with ammonium ceric nitrate for energy storage devices

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Thermal, structural, optical and electrical conductivity studies of pure and Fe3+ ions doped PVP films for semoconducting polymer devices

Cited by 21 publications

References 34 publications

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

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

Dielectric Biodegradable Biopolymer‐Based Graphene Nanocomposites for Use in the Packaging Industry and Capacitor Application

Studies on structural, electrical and electrochemical properties of biodegradable PVP/starch blend polymer electrolytes with ammonium ceric nitrate for energy storage devices

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Thermal, structural, optical and electrical conductivity studies of pure and Fe³⁺ ions doped PVP films for semoconducting polymer devices