Abstract
Self-doped conducting polymer, polyanthranilic acid (PANA) was synthesized and used for the first time for fabrication of contacts with the configurations (Al, Ti, Sn metal)/PANA/indium tin oxide (ITO) coated glass and Al/PANA/Pt-nano-probe using mico- and nano-meter thick PANA layers, respectively. The chemically synthesized PANA dissolved in methanol was deposited over the substrate (ITO coated glass plate/Al-flat electrode) using spin coating technique. The current–voltage ( I– V) characteristics and diode performance parameters of micro- and nano-meter sized devices were compared and contrasted by using micro- and nano-contact arrangements. The I– V characteristics of the above two configurations exhibited a rectifying contact with Al and Ti metals and an ohmic contact with Sn. The morphology of polyanthranilic acid film was studied using atomic force microscope and UV–vis spectroscopic technique was used to obtain the optical bandgap of the polymer.
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