Temperature Dependent Electrical Transport Characteristics of Polyaniline Films Modified with Gold nanoparticles

Thakur, Sonika; Kaur, Parminder; Devgan, Kusum; Singh, Lakhwant

doi:10.1016/j.matpr.2019.06.597

Cited by 1 publication

(1 citation statement)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Consequently, charge carrier oscillations lag behind the magnetic field, leading to a decreased dielectric constant value. [ 49 ] It can be observed that the enhancement of the dielectric constant occurs with increasing temperature. This is due to the energy content of charge carriers; as temperature rises, mobile ions gain more energy and align themselves with the applied field.…”

Section: Resultsmentioning

confidence: 99%

High performance optical and electrical properties of zinc oxide reinforced poly(diphenylamine) nanocomposites for optoelectronic applications

Furhan

Ramesan

2022

Polymer Engineering & Sci

View full text Add to dashboard Cite

Polymer nanocomposites with good optical, crystalline, morphological, thermal, dielectric, and electrical properties were synthesized using poly(diphenylamine) (PDPA) and zinc oxide (ZnO) nanoparticles. The redshift in the UV absorption edges of composites indicates that ZnO nanoparticles have been successfully incorporated into the PDPA matrix. The lowest optical bandgap energy and maximum refractive indices were observed in 7 wt% loadings. The narrowing of the avearge chain spacing detected by X-ray diffraction (XRD) proved that ZnO had an impact on the structure of PDPA. Scanning electron microscopy (SEM) images show homogeneous dispersion of spherically shaped ZnO nanoparticles at lower filler loadings. The glass transition temperature of the nanocomposites was greatly enhanced with the addition of nanoparticles analyzed by differential scanning calorimetry. The electrical and dielectric properties improved with temperature and nanoparticle loadings up to 7 wt%. The analysis of impedance spectra and the decreasing radius of semi-circular arcs in the Nyquist plot manifests the existence of temperature-dependent conductivity and relaxation phenomenon. The experimental values of DC conductivities were correlated with different theoretical conductivity models and the McCullough model was found to be the most promising one to explain the increased DC conductivity of the PDPA/ZnO nanocomposites.

show abstract

Section: Resultsmentioning

confidence: 99%