Structural, Optical, and electrical properties of polymeric composites doped with K2PtCl6

This study examines the impact of dipotassium hexachloroplatinate (K2PtCl6) on the structural, optical, optoelectronic, and electrical properties of polyethylene oxide (PEO) composite films. X-ray diffraction analysis indicates that the crystallinity of the PEO/K2PtCl6 composite films decreases from 49.1 % to 38.4 % with increasing K2PtCl6 concentrations, ranging from 0 to 5 wt%. These composite films exhibit high transmittance values (>89%) in the visible region. The optical bandgap energy decreases from 4.39 eV to 4.25 eV with an increase in K2PtCl6 concentration to 5 wt%. Electrical conductivity, determined using a 4-point probe, shows an increase from 4.72x10(-6) S/cm to 1.10x10(-3) S/cm as the K2PtCl6 concentration increases to 5 wt%. Additionally, the AC conductivity spectra sigma ' f of the PEO/K2PtCl6 composite films were analyzed, showing that the West expression effectively models the conductivity spectra. At 280 K, sigma(0) increases continuously from 9.83x10(-12) S/cm to 7.79x10(-9) S/cm as the K(2)PtCl(6 )concentration increases from 0 to 5 wt%.