Gamma‐Induced Transformations in PVC‐Based Nanocomposites for Tailored Optical Properties

Author:

Alshahrani BadriahORCID,Korna Ahmed HassanORCID,Fares Soad SaadORCID,Ali Ahmed H.ORCID

Abstract

This study explores the effects of gamma irradiation on the properties of polyvinyl chloride (PVC):(50 nm)/CeO2:(10 nm)/TiO2 nanocomposite films. Gamma irradiation significantly enhances the optical conductivity (σopt) of the films, signifying increased light‐to‐current conversion efficiency. This improvement is attributed to a reduction in the bandgap and increased light absorption induced by irradiation. X‐ray diffraction (XRD) analysis reveals a decrease in crystallinity due to disrupted atomic order within the nanocomposite. Williamson–Hall (W‐H) plots show a dose‐dependent reduction in crystallite size and a corresponding rise in lattice strain with increasing irradiation dose. Infrared (IR) spectroscopy suggests potential bond breaking of O‐H groups and modifications in C=O functional groups upon irradiation. The absorption coefficient and binding energy exhibit a nonmonotonic response with increasing dose, reaching an optimum at around 100 kGy. These findings demonstrate the potential of gamma irradiation for tailoring the optoelectronic properties of PVC:(50 nm)/CeO2:(10 nm)/TiO2 nanocomposites. This work paves the way for the development of next‐generation optoelectronic devices with optimized functionalities.

Funder

King Khalid University

Publisher

Wiley

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