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Temperature dependence of the current-voltage characteristics of Sn/PANI/p-Si/Al heterojunctions

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dc.creator Ayyildiz, E.
dc.creator Kaya, M.
dc.creator Cetin, H.
dc.creator Boyarbay, B.
dc.creator Gok, A.
dc.date 2007-10-10T00:00:00Z
dc.date.accessioned 2021-12-03T11:31:29Z
dc.date.available 2021-12-03T11:31:29Z
dc.identifier 83ea1473-d149-4fe0-bf9e-2836e9ce7888
dc.identifier 10.1088/0953-8984/19/40/406205
dc.identifier https://avesis.sdu.edu.tr/publication/details/83ea1473-d149-4fe0-bf9e-2836e9ce7888/oai
dc.identifier.uri http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/93067
dc.description Sn/ PANI/ p- Si/ Al heterojunctions were fabricated by electropolymerization of aniline on chemically cleaned p- Si substrates. Current - voltage characteristics of Sn/ PANI/ p- Si/ Al heterojunctions measured in the temperature range 140 280 K are presented and analyzed. Although these devices were clearly rectifying, their I - V characteristics were non- ideal, which can be judged from the nonlinearity in the semi- logarithmic plots. The high values of the ideality factor n depending on the sample temperature may be ascribed to a decrease of the exponentially increasing rate in current due to space- charge injection into the PANI thin film at higher forward bias voltages. Careful analysis of the forward bias I - V characteristics on a log - log scale indicates that the space-charge-limited current ( SCLC) conduction controlled by an exponential trap distribution above the valence band edge dominates the current transport in the PANI/ p- Si diodes at high voltages. Furthermore, the PANI was characterized by using Fourier transform infrared ( FTIR) and ultraviolet - visible ( UV - vis) spectra.
dc.language eng
dc.rights info:eu-repo/semantics/closedAccess
dc.title Temperature dependence of the current-voltage characteristics of Sn/PANI/p-Si/Al heterojunctions
dc.type info:eu-repo/semantics/article


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