Novel Structure, Electric and Dielectric Properties of PPy-PANI-GO-MWCNTs Composite/MnO2/Fe3O4/n-Si Structure

Abstract

Conducting polymer -nanocomposite has potential application in optoelectronic devices. This paper presents a novel composite consisting of polypyrrole (PPy), polyaniline (PANI), graphene oxide (GO), and multiwall carbon nanotube (MWCNTs), this composite was deposited on MnO2/Fe3O4/n-Si structure. The obtained structure is PPy-PANI-GO-MWCNTs composite/MnO2/Fe3O4/n-Si. This structure is investigated by scanning electron microscope SEM, X-ray diffraction XRD, and Raman spectroscopy. PPy-PANI-GO-MWCNTs composite/MnO2/Fe3O4/n-Si structure is used in manufacturing electronic devices like diodes, which have tunneling behavior at low voltage. The dielectric permittivities,ac electrical conductivity and Capacitance-Conductance-frequency measurement recorded in a varied frequency (100 Hz–20 MHz ) and Voltage (3 v up to-3v) at different temperature (253 k–363 k). The growth in dc conductivithy caused by the rise in temperature from 233 k to 363 k (from 5* 10−6 to 9*10−6 S cm−1 ). the dominant role of interfacial polarisation in dielectric spectra at low frequencies are discussed.