ORGANIC MEMORY DEVICES WITH NATURAL RUBBER/ FULLERENE COMPOSITES

Abstract

ABSTRACT The application of natural rubber (NR) as cost-effective component for an organic bistable memory device is demonstrated for the first time. An organic bistable memory device based on Cis 1–4 polyisoprene (NR) and fullerene (C 60 ) is a trilayered structure consisting of NR/C 60 composite sandwiching a C 60 layer and thermally deposited aluminum electrodes on both sides (Al/NR:C 60 /C 60 /NR:C 60 /Al). Investigations on current-voltage (I-V) characteristics of the device revealed promising device performance with a high ON/OFF current ratio and nonvolatile stability in both of its conducting states, indicating the strong potential of the NR:C 60 composite as a nonvolatile memory material. Further, attempts are made to fit the current response of the device using existing charge transport models and explain the origin of memory switching in present device.