Dynamic resistive crossbar memory based on conjugated polymer composite

Abstract

A semiconducting polypyrrole composite was designed to exhibit electric field dependent charge carrier distributions. Junctions were grown electrochemically on gold crossbars. Application of fields results in the drift of mobile cations, creating regions with higher conductivity and increased current. The field induced carrier redistribution results in field- and time-dependent current with good junction-to-junction repeatability. The electrical transport dominated by space charge limited current will have better scaling behavior than surface dominated and Ohmic devices as the dimensions are reduced to the nanometer scale.