Electrical properties of electrodeposited polyaniline nanotubes |
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Authors: | Edson Giuliani R Fernandes Demetrio Artur W Soares Alvaro Antonio Alencar De Queiroz |
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Affiliation: | (1) Departamento de Física e Química, Instituto de Ciências Exatas-Universidade Federal de Itajubá (UNIFEI), Av. BPS 1303, Itajuba, MG, 37500-903, Brazil |
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Abstract: | The electrical properties of polyaniline nanotubes-aluminum like Schottky diode are described. Polyaniline nanotubes (PANI)
were deposited on aluminum thin films using the polarographic technique. The nanotubes were characterized by scanning electron
microscopy (SEM) and UV-Vis absorption spectra. The electrical properties of the heterojunction PANI-Al were examined. The
current density–voltage (J × V) profile has shown a behavior typical of Schottky diode, with ideality factor (n) of 6.76 and ϕ
b of 0.70 eV. Impedance spectroscopy data apparently shows that the resistance dominated the AC behavior of the PANI-Al system.
The equivalent circuit is composed from a resistor in series with a parallel resistor–capacitor circuit. The results indicate
that polyaniline nanotubes may be interesting to the development of electro-optical devices with 2D structure. |
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Keywords: | |
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