Synthesis and Complex Optical Characterization of Polythiophene/Poly (vinyl acetate) Composite Thin Films for Optoelectronic Device Applications

Abstract

In the present communication, Polythiophene/poly(vinyl acetate) (PTh/PVAc) composite thin films were synthesized by chemical oxidative polymerization method in methanol is reported. The prepared composite were characterized through
X-ray diffraction (XRD), Field emission scanning electron microscopy (FE-SEM), ultraviolet-visible (UV-Vis) spectroscopy and photoluminescence (PL) measurement. The broad peak was displayed in the PL spectra for the prepared composite at around 390 nm, proposed prodigious charge generation efficiency. The analysis of the optical parameters of the prepared composite was carried out by spectral analysis using a UV-Vis spectrophotometer. The obtained results, which were as follows: energy band gap of 4.58–5.31 eV, complex refractive index coefficient values of 1.175–1.193 and optical conductivity values in the range of 2.58×10⁸–5.24×10⁸ S.cm^-1 at 270 nm. The above results shows the studied composite films are expected to offer potential applications in optoelectronic devices.