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Electrical characterization with atomic force microscopy and low temperature transport properties of boric acid doped polyaniline with Fe3O4 nanoparticles composites

A. BALLESTAR1, F. YAKUPHANOGLU2,* , B. FILIZ ŞENKAL3, M. MUÑOZ4, W. A. FAROOQ5

Affiliation

  1. Laboratorio de Física de Sistemas Pequeños y Nanotecnología, Consejo Superior de Investigaciones Científicas (CSIC), Serrano 144, Madrid 28006 Spain
  2. Physics Department, Faculty of Science, Firat University, Elazig, Turkey
  3. Department of Chemistry, Faculty of Arts and Sciences, İstanbul Technical University, 34469, Maslak, Istanbul, Turkey
  4. Instituto de Física Aplicada, Consejo Superior de Investigaciones Científicas (CSIC), Serrano 144, Madrid 28006 Spain
  5. Department of Physics and Astronomy, College of Science,King Saud University, Riyadh, Kingdom of Saudi Arabia

Abstract

The electrical charge transport properties of the boric acid doped polyaniline with Fe3O4 nanoparticles composites have been investigated in the temperature range of 35 K to 300 K. The microstructure and electrical conductivity properties of the polymer nanocomposites were further analyzed by scanning electron microcopy (SEM) and atomic force microscopy (AFM). The electrical conductivity of the composites changes with Fe3O4 dopant. This suggests that interactions between the polymer matrix and Fe3O4 nanoparticles take place. The characteristic Mott temperature confirms the highest conductivity for the composite with 5%wt dopant. The charge transport mechanism of the composites varies from three dimensional hopping to tunneling mechanism. It is demonstrated that the boric acid doped polyaniline with Fe3O4 nanoparticles composites are typical organic semiconductors..

Keywords

Fe3O4, Electrical properties, Organic semiconductor, Nanocomposites.

Citation

A. BALLESTAR, F. YAKUPHANOGLU, B. FILIZ ŞENKAL, M. MUÑOZ, W. A. FAROOQ, Electrical characterization with atomic force microscopy and low temperature transport properties of boric acid doped polyaniline with Fe3O4 nanoparticles composites, Optoelectronics and Advanced Materials - Rapid Communications, 5, 2, February 2011, pp.177-181 (2011).

Submitted at: Jan. 24, 2011

Accepted at: Feb. 17, 2011