Nanostructural and Optical Investigation of PVA-CdS /AgNPs Nanocomposites for Photonic and Optoelectronic Applications

Amer N.  Jarad; Raed A.  Dheyab

doi:10.51699/cajotas.v7i3.1734

Authors

Amer N. Jarad Dept. Materials of Science, Polymer Research Centre, University of Basrah, 61004 Basrah, Iraq
Raed A. Dheyab Chemical Engineering Department, College of Engineering, University of Basrah

DOI:

https://doi.org/10.51699/cajotas.v7i3.1734

Keywords:

Nanocomposites, Polymer, Ag nanoparticles, optical band gap, optical properties

Abstract

The formation of polymer PVA nano-composites as films coprecipitated at room temperature using chemical deposition and including cadmium sulfide (CdS) and silver (Ag) nanoparticles was achieved by use of UV-Vis absorption spectroscopy. It was revealed that PVA-CdS/Ag had the highest value of 198 nm (abs = 1.050) as compared to PVA-CdS₆ = 0.30. Eg = 2.83 and (2.70 eV); quantum confinement and plasmon-exciton blue-shifted to become Eg = 2.42 eV of bulk CdS were the band gaps with Tauc analysis. The optical conductivity (2.5110119 s⁻¹) and refractive index (1.52) are enhanced by 3.8-fold and the refractive index by 1.52-1.65, respectively, to render PVA-CdS/Ag a high-performance UV photonic material.

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