Physical characteristics, dielectric properties and electrical conductivity of erythrosine B/PVA polymeric composite films: effect of erythrosine B concentration.

Autor: El-Zaidia, E. F. M., Ali, H. A. M., Darwish, A. A. A., Shakra, A. M.
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Zdroj: Optical & Quantum Electronics; Oct2024, Vol. 56 Issue 10, p1-13, 13p
Abstrakt: Erythrosine B/PVA polymeric composite films were prepared with different concentrations of Erythrosine B (EB) as 0, 1, 2, and 4 wt% of EB utilizing the casting procedure. The crystal structure of Erythrosine B /PVA films was identified by X-ray diffraction patterns (XRD). The frequency (100 Hz − 1 MHz) reliance on both dielectric constant (ε1) and dielectric loss (ε2) was investigated. Both ε1 and ε2 of Erythrosine B/PVA polymeric composite films decreased with increasing frequency and increased by rising percent EB wt%. The ac conductivity of Erythrosine B/PVA films showed increased behavior by raising frequency. Moreover, the frequency exponent (s) decreased slightly from 0.99 to 0.96 with increasing concentrations. The increase in Erythrosine B content enhances the values of for EB/PVA polymeric composite films. The density of states N(Ef) is calculated at specific frequencies for different concentrations of EB for Erythrosine B /PVA polymeric composite films, and it has values in the order of 1018 cm− 3 eV− 1. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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