Investigation of optical band gap in PEO-based polymer composites doped with green-synthesized metal complexes using various models
Hawkar A. Mohammed, Pshko A. Mohammed, Shujahadeen B. Aziz
Abstract
) approaches, were used to identify the optical band gap of the films. Tauc's plots confirmed the nature of electronic transitions. Dielectric loss measurements indicated a reduction in the PEO bandgap from 5.5 eV to 1.4 eV upon metal complex incorporation. The ASF method further corroborated bandgap changes using only absorbance data. Metallization criteria were applied to classify the polymer's behavior as insulating or metallic. A redshift in absorption edge with increasing complex concentration, from 5.3 eV to 1.42 eV, confirmed the successful interaction between PEO and the metal complex, as validated by UV-vis spectroscopy.
Topics & Concepts
DopingMaterials sciencePolymerMetalComposite materialBand gapChemical engineeringOptoelectronicsMetallurgyEngineeringPolymer Nanocomposite Synthesis and IrradiationConducting polymers and applicationsPolymer Nanocomposites and Properties