Polymer solar cell

Engineering

Oxide

Dielectric loss

Metallurgy

Materials science

Graphene

Nanocomposite

Polyvinyl alcohol

Chemical engineering

Polymer

Nanotechnology

Dielectric

Polymer nanocomposite

Composite material

Vinyl alcohol

Optoelectronics

Materials Today Proceedings

Graphene has unique electrical properties at room temperature properties with a flexible 2D layer and stronger material over discovered and use to enhance the electrical properties of materials. This study investigated the influence of two important factors the molecular weights (Mw) of polymer and the concentration of nanofillers on the electrical properties of samples. Hybrid nanocomposites were fabricated from polyvinyl alcohol (PVA) and polyethylene glycol (PEG) with three different molecular weights (4 k, 8 k, and 20 k) using developed mixing-sonication-solution methods. This method was successfully exhibited a fine homogeneity and good dispersion of both polymers and nanofillers in the matrix as displayed by using an optical microscope (OM). The effect of the addition of graphene oxide on the alternating electrical properties showed a reduction in the dielectric constant and the isolation loss of the polymer compounds (PVA-PEG-GO) with increasing the frequency of the electric field and the loss of isolation increased. It was also shown that the increase of electrical conductivity is noticeable with samples by increasing the molecular weight of PEGs to the highest at 20 k Mw. Increasing the polymer molecular weight in addition to the contribution of GO revealed an extraordinary improvement of the electrical properties that bring promising and performance materials for electronic, photovoltaic devices, heterojunction, solar cells, and energy storage systems, other substantial applications.

Influence of the polymer molecular weights on the electrical properties of Poly(vinyl alcohol) – Poly(ethylene glycols)/Graphene oxide nanocomposites