This study investigates the dynamics for conductive filament growth in organic memristors from the viewpoint of the ionic transport by controlling the ordering of polymer molecules. Furthermore, we propose a simplistic and novel approach to improving the reliability of the devices by confining conductive filament growth. It is observed that conductive filament growth is varied with the polymer molecular ordering that governs the ion pathways. In the device with the aligned polymer electrolyte, conductive filament growth is realized only in a localized region due to the confinement of the ion pathways by the aligned polymer molecules. Our flexible organic memristor consisting of the homeotropically aligned polymer shows the reliable resistive switching characteristics and stable mechanical flexibility. This observed principle of conductive filament growth in the polymer electrolyte will provide a physical understanding of conductive filament growth in organic memristors, and useful guidelines for developing a new class of flexible neuromorphic electronics.

这项研究通过控制聚合物分子的排列，从离子迁移的角度研究了有机忆阻器中导电丝生长的动力学。此外，我们提出了一种简单而新颖的方法，通过限制导电丝的生长来提高设备的可靠性。观察到导电丝的生长随控制离子通道的聚合物分子顺序而变化。在具有对齐的聚合物电解质的装置中，由于对齐的聚合物分子限制了离子路径，所以仅在局部区域实现了导电丝的生长。我们的由垂直排列的聚合物组成的柔性有机忆阻器具有可靠的电阻切换特性和稳定的机械柔韧性。