DC Conductivity Studies of PPy/ZnO Composites

Samples of conducting polypyrrole (PPy) and Polypyrrole/ZnO composites were synthesized through chemical oxidative polymerization method using an anhydrous ferric chloride (Fecl3) as an oxidizing agent. DC conductivity as a function of temperature as has been measured and data analyzed using Small polaron hopping and Variable range hopping theories. Activation energies for conduction and density of levels at Fermi energy were determined. Conductivity was found to be in the order of 10 -3 (Ω -1 m -1 ) and exhibited semiconducting behavior with respect to temperature. Activation energy was found to be in the order of a meV. It is for the first time PPy-ZnO nanocomposites were investigated for temperature variation of conductivity and conduction mechanisms probed thoroughly.

[1]  P. Jayamurugan,et al.  Morphological, structural, functional effect and Comparative study of PPy with PPy/TiO2, and PPy/ZnO composite films by Nebulizer Spray coating Technique , 2016 .

[2]  R. Ramanna,et al.  Conductivity Studies on Polythiophene-CoO NanoComposites , 2015 .

[3]  K. Praveenkumar,et al.  Conduction Mechanisms in Polypyrrole-Copper Nanocomposites , 2015 .

[4]  A. Kassim,et al.  Electrical Properties of Polypyrrole Conducting Polymer at Various Dopant Concentrations , 2014 .

[5]  Ishpal Rawal,et al.  Effect of anionic surfactant concentration on the variable range hopping conduction in polypyrrole nanoparticles , 2014 .

[6]  K. Praveenkumar,et al.  Structure and Temperature Dependence of Electrical Conductivity in Polythiophene Nanoparticles , 2014 .

[7]  A. Siddiqui,et al.  Synthesis, Electrical Conductivity, and Dielectric Behavior of Polyaniline/V2O5 Composites , 2013 .

[8]  V. Patil,et al.  Polypyrrole–ZnO nanohybrids: effect of CSA doping on structure, morphology and optoelectronic properties , 2013, Applied Nanoscience.

[9]  V. Patil,et al.  Facile and efficient route for preparation of polypyrrole-ZnO nanocomposites: Microstructural, optical, and charge transport properties , 2012 .

[10]  S. Siddiqi,et al.  Synthesis of polypyrrole/zinc oxide composites and study of their structural, thermal and electrical properties , 2012 .

[11]  V. Patil,et al.  Camphor Sulfonic Acid Doped Polyaniline-Titanium Dioxide Nanocomposite: Synthesis, Structural, Morphological, and Electrical Properties , 2011 .

[12]  R. Ali,et al.  HIGHLY ENHANCED ELECTRICAL CONDUCTIVITY AND THERMAL STABILITY OF POLYTHIOPHENE/SINGLE-WALLED CARBON NANOTUBES NANOCOMPOSITE , 2011 .

[13]  H. Zengin,et al.  Synthesis and characterization of polyaniline/silicon dioxide composites and preparation of conductive films , 2010 .

[14]  Qiang Wang,et al.  Polypyrrole/Silicon Carbide Nanocomposites with Tunable Electrical Conductivity , 2010 .

[15]  Junsheng Yu,et al.  Fabrication and gas sensitivity of polyaniline–titanium dioxide nanocomposite thin film , 2007 .

[16]  Hoosung Lee,et al.  Morphology and photoluminescence of colloidal polypyrrole nanoparticles , 2007 .

[17]  M. Prasad,et al.  Chemical synthesis, characterization, and direct‐current conductivity studies of polypyrrole/γ‐Fe2O3 composites , 2007 .

[18]  P. A. Savale,et al.  Synthesis and characterization of Ppy-PVS, P(NMP)-PVS and their co-polymer Ppy-P(NMP)-PVS films by galvanostatic method , 2007 .

[19]  B. Ambedkar.  Synthesis and characterization of Ppy-PVS, P(NMP)-PVS and their co-polymer Ppy-P(NMP)-PVS films by galvanostatic method , 2007 .

[20]  S. R. C. Vivekchand,et al.  Electrical properties of inorganic nanowire–polymer composites , 2005 .

[21]  R. Saraswathi,et al.  Thermal stability of polypyrrole prepared from a ternary eutectic melt , 2005 .

[22]  T. Kitamura,et al.  Deposition of polyaniline via molecular self-assembly on TiO2 and its uses as a sensitiser in solid-state solar cells , 2004 .

[23]  S. Annapoorni,et al.  Thermal transition behaviour of iron oxide–polypyrrole nanocomposites , 2003 .

[24]  Jan-Chan Huang,et al.  Carbon black filled conducting polymers and polymer blends , 2002 .

[25]  P. Pissis,et al.  Electrical and thermal conductivity of polymers filled with metal powders , 2002 .

[26]  C. Deslouis,et al.  Corrosion protection and conducting polymers: polypyrrole films on iron , 2001 .

[27]  Mártin,et al.  Observation of crossover from three- to two-dimensional variable-range hopping in template-synthesized polypyrrole and polyaniline. , 1994, Physical review. B, Condensed matter.

[28]  K. Murata,et al.  Study on the electrical conduction mechanism of polypyrrole films , 1991 .

[29]  J. Unsworth,et al.  Electrical conductivity and thermoelectric power of polypyrrole with different doping levels , 1988 .

[30]  Nevill Mott,et al.  Conduction in glasses containing transition metal ions , 1968 .