Processing of Pvc-Pvp/Moo3 Polymer Blend Composites for Optoelectronic Applications

Polymer blends nanocomposites films have come to the forefront of optoelectronics research because of their superior physicochemical properties as well as their ease and low-cost of fabrications. In this article, we report that the preparation and characterization of a new PVC/PVP polymer blend films modified with MoO3 nanoparticles. We employ XRD, FESEM, FTIR and Raman techniques to investigate first the structure of the polymer blend matrix as well as the structural changes due to dispersion of MoO3 nanoparticles. XRD, FTIR, and Raman spectra corroborate the strength of complexity between the polymer and nano-MoO3. Additionally, the role of MoO3 additive on the optoelectronic properties of the nanocomposites films is systematically investigated. Optical energy gap analysis shows an increase in the direct/indirect energy gaps when MoO3 content was raised up to 0.6 wt%. Moreover, by alternating the MoO3 content, we were able to tune the dispersion energy, refractive index and oscillator strength of the nanocomposites films. We further demonstrate the substantial role of MoO3 additives in improving the charge transfer complex in the PVC/PVP polymer blend. The nanocomposites films show the improvement in both linear and non-linear optical parameters. The experimental results presented in this work indicate that tuning the content of MoO3 nanoparticles is a critical part in fabricating a reliable composites materials for optoelectronic applications.