Enhanced Optical and Dielectric Characteristics of PVC/PEG Blended Polymer Via Loading ZnCo1.8Al0.2O4/LiTFSI/THAI for Emerging Optical and Electrical Applications
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY（2025）
King Saud Univ | Ain Shams Univ
Abstract
The current work aims to produce the PVC/PEG/ZnCo1.8Al0.2O4/LiTFSI/THAI blended polymers to employ in low-cost optoelectronics and energy storage applications. Poly(vinyl chloride) (PVC)/polyethylene glycol (PEG)/ZnCo1.8Al0.2O4/lithium bis(trifluoromethane)sulfonimide (LiTFSI)/x wt% tetrahexylammonium iodide (THAI) blended polymers were formed via a casting procedure. The doped blends containing THAI exhibit strong absorption across UVA, UVB, and UVC spectra. The minimum direct and indirect optical band gap values are (3.03, 3.83, 4.51)/(2.54, 3.18, 3.66) eV in the blend with 5 wt% THAI. At 550 nm, the refractive index increased to 1.702 upon doping the host blend with ZnCo1.8Al0.2O4/LiTFSI/3 wt% THAI. The effect of dopant on the optical dielectric constant, dielectric losses, Nyquist' plots, and Argand plots' was investigated. The doped fillers in the PVC/PEG blended polymer controlled the nonlinear optical parameter values. Bended polymer with 1 wt% THAI has greater quenching in the fluorescence intensity. A chromaticity diagram revealed that the blends have blue-violet-yellow colors based on the kind and ratio of the fillers. Blend with ZnCo1.8Al0.2O4/LiTFSI has the superior energy density value.
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Key words
X-ray diffraction,phosphors - characterization,dielectrics
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