AC conductivity by quantum mechanical tunnelling and dielectric properties of hexanoyl chitosan/PVC-NaI-MPImI electrolyte for application in dye sensitized solar cells

• Published in: AIP Conference Proceedings
• Main Author: Muhammad F.H.; Husni H.; Azlan M.N.; Winie T.
• Format: Conference paper
• Language: English
• Published: American Institute of Physics 2024
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85188340828&doi=10.1063%2f5.0194102&partnerID=40&md5=4b7b4c69c97c5dfa00be76a611ece9bd

By using the solution casting technique, a polymer electrolyte composed of a hexanoyl chitosan/PVC blend as the host polymer, sodium iodide (NaI) as the salt, and 1-methyl-3-propyl imidazolium iodide (MPImI) as the ionic liquid was prepared. In the temperature range of 303 to 343K, the effect of MPImI concentration on the dielectric characteristics of hexanoyl chitosan/PVC (90:10)-NaI complexes was investigated. According to the dielectric studies, both frequency and temperature had a significant impact on the samples' dielectric characteristics. In the lower frequency region, the dielectric constant, ϵr and the dielectric loss, ϵi are found to rise with temperature, while these effects are almost negligible in the higher frequency region. Based on electrode polarization, this behaviour can be described. It was found that the conductivity's frequency dependence obeyed the universal power law. The quantum mechanical tunnelling (QMT) model was used to explain the conduction process of the electrolyte system. © 2024 Author(s).