Abstract
Nanocomposites of carboxyl functionalized conducting polymer, poly(anthranilic acid) (PANA), with inorganic Na+ montmorillonite (MMT) clay are formed using in-situ polymerization and solution mixing techniques and used for the first time for fabrication of sandwich type devices with configuration metal Al/PANA–clay nanocomposite/indium tin oxide coated glass (ITO). The current–voltage (I–V) characteristics and diode performance parameters are compared and contrasted for the materials obtained by different synthesis routes and polymers synthesized for different polymerization time. I–V characteristics of these devices show a rectifying contact with Al metal, however, with significant variation in performance parameters like barrier height, ideality factor and reverse saturation current. The capacitance–voltage (C–V) characteristics of the Schottky diodes are used for extracting the built-in potential and doping concentration. The novel nanocomposite material is also characterized for their surface morphology, structural and electrical properties.
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