?-phase Cu-phthalocyanine/acrylonitrile butadiene styrene terpolymer nano-composite film technology for organo-electronic applications

Abstract

Abstract To investigate the electronic properties such as dielectric permittivity, dielectric loss, conductivity, capacitance and Nyquist plots, ABS and ?-CuPc (10-40wt% of ?-CuPc) formulation was utilized to fabricate nanocomposite films via cost-effective solution processing technique. Cross-sectional morphological investigations were performed for the developed composites with the aid of FE-SEM microscopy; the result suggested that the modified cross-sectional-surface-morphology was due to the addition of ?-CuPc compound. Further, the interactions attributable phase groups of the polymer with the ?-CuPc compound was studied by the FT-IR spectroscopy. UV-vis Spectroscopy result suggested that the absorption peak at 380nm belongs to ?-?^* transition, which corresponds to intense B-band (Soret band) of Cu-Phthalocyanine ring significantly instigates electronic conduction mechanism. Further, in order to understand electronic properties, broadband-impedance-analyzer was utilized, wherein dielectric permittivity at ?10Hz was found to attribute due to the Maxwell-Wagner-Sillars (MWS) polarization mechanism. Subsequently, frequency-dependent permittivity (103-107Hz) comprehended by the dipole polarization mechanism. The realization of composite�s permittivity increment from 4.6 - 5.1 at 107Hz was due to oriental resonance phenomena. Moreover, composite with the maximum conductivity (?AC) 2.1 x 10-6 S/cm was observed, which is attributable to the ?-?^* transition (380nm) was evidenced by UV-vis spectra. Although the composite reveals higher conductivity, at higher-frequency, low loss characteristics (>10MHz ~ 0.049) observed of ?-CuPc/ABS. These low loss characteristics are a remarkable outcome of nanocomposites at MHz frequencies. Therefore, authors believe that these fabricated nanocomposite films via cost-effective solvent cast film technology could facilitate to develop organo-electronic components or devices.