Metal/conductive-polymer junction: an In/poly(N-methylpyrrole) diode with a tunnel Schottky junction

Abstract

The temperature dependence of the J-V characteristics of an In/poly(N-methylpyrrole) junction device has been measured in order to investigate the junction properties. The barrier height and the effective Richardson constant of the junction have been determined to be 0.38 eV and 1.3*10-4 A cm-2 K-1 by the Richardson plots. The extremely small effective Richardson constant has been due to the existence of the composite layer, acting as a tunnelling one, formed by the reaction of the indium with the polymer surface.

Reverse bias capacitance–voltage characteristics of Al/polyaniline/p-Si/Al structure as a function of temperature

“…According to the polarity of both interface dipoles charge redistribution takes place giving rise to an excess capacitance for very thin organic films. Non-ideal 1/C 2 vs. V plots showing curvature concave downwards can be transformed into linear 1 ðCÀC 0 Þ 2 vs. V plots by determining the excess capacitance, (C 0 ), as the intercept of a C vs. (V d À V) À1/2 plot, where V d is the diffusion potential. An analysis of the possible significance of C 0 indicates that its value can be used as an approximate quality index for materials fabricated by different methods [32].…”

“…Conducting polymers consisting of a p-conjugated backbone are attractive because of their unique electronic properties. Their conductivity can be controllably varied from the insulating through the semiconducting to metallic regime by oxidizing (p-doping) or reducing (n-doping) the polymers [1]. When it compared to inorganic semiconductors electric mobilities in conjugated polymers are generally low.…”

Electronic parameters of MIS Schottky diodes with DNA biopolymer interlayer

“…For example, many devices using polymeric [1][2][3][4][5][6][7] and nonpolymeric organic materials [8][9][10][11][12][13][14][15], including light emitting diodes and devices, such as an inorganic/organic and a metal/organic heterostructures, have been fabricated. Attractive features of these materials offer the possibility for device processing, compatibility with flexible substrates, and low materials consumption for ultra thin molecular films, all of which give the prospect of cheaper photovoltaic energy generation [16].…”

A micropump driven by a polypyrrole‐based conducting polymer soft actuator

“…The greatest advantage of an electroconductive polymer soft actuator is that its conductivity markedly increases as a result of electrochemical oxidation/reduction 5, 6. Conducting polymers can be used in semiconductor devices such as light‐emitting diodes,7 solar cells8 and transistors,9 as well as in metallic conductors 10. Upon oxidization and reduction, the physical properties of conducting polymers change as the polymers swell or shrink 11.…”