Junction with tunable current–voltage characteristics: n-doped Si/poly(vinyl chloride)–poly(dithienopyrrole) composite

A device was realized by interfacing the rectifying junction silicon/poly(vinyl chloride)–poly(dithienopyrrole) composite with a second lithium electrode through a polymer gel. The purpose was to tune the characteristics of the junction by changing the potential delivered to the polymer. Current–voltage plots of the junction were recorded at different voltages applied between the polymer and the lithium electrode; preliminary results indicate a variation of the current–voltage characteristics by changing the polymer potential; in particular, an increase of the reverse saturation current and a decrease of the series resistance by increasing the oxidation level of the polymer were observed.