Diode Behavior of Electrophoretically Deposited Polyaniline on TiO2 Nanoparticulate Thin Film Electrode
An inorganic/organic hetrostructure diode was constructed by the electrophoretic deposition of the p-type polyaniline (PANI) on an n-type titanium oxide (TiO2) nanoparticulate thin film. The bonding and internalization of PANI to TiO2 nanoparticulate
thin film were confirmed by the morphological, structural and optical studies of electrophoretically deposited PANI/TiO2 nanoparticulate thin film. The increased size of TiO2 nanoparticles indicated the well penetration of PANI molecules into the pores of mesoporous TiO2
nanoparticulate thin film. The XPS studies of PANI/TiO2 heterostructure exhibited the surface bonding and interaction between PANI molecules and TiO2 nanoparticles. The current–voltage (I–V) characterization of PANI/TiO2 heterostructure
was carried out in the forward and the reverse bias at the applied voltage ranges from −1 V to +1 V with a scan rate of 2 mV/s. The constructed Pt/PANI/TiO2 heterostructure device established diodic behavior with non-linear nature of I–V curves.
Keywords: ELECTROPHORETIC DEPOSITION; I-V CHARACTERISTICS; NANOPARTICULATES; POLYANILINE; XPS ANALYSIS
Document Type: Research Article
Publication date: 01 February 2011
- Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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