High-Performance Flexible Polymer Memristor Based on Stable Filamentary Switching

Area of Science:

• Materials Science
• Electronics Engineering
• Nanotechnology

Background:

• Atomic switch memristors are promising for nonvolatile memory but suffer from unstable conductive filaments.
• Instability in incomplete conductive bridges hinders satisfactory switching performance in current devices.

Purpose of the Study:

• To develop a flexible polymeric memristor with enhanced stability and performance.
• To investigate the role of pre-existing ions in forming robust conductive filaments.
• To demonstrate reliable switching behavior under mechanical strain.

Main Methods:

• Fabrication of a flexible memristor using polyethylenimine incorporated with silver salt.
• Characterization of the device's electrical switching properties at room temperature.
• Evaluation of device performance under bending conditions and after repeated bending cycles.

Main Results:

• The memristor exhibited superior performance, including high ON/OFF ratio, good retention, and low operating voltage.
• Pre-existing silver ions facilitated the formation of a robust silver filament, enhancing stability.
• The device demonstrated stable bipolar switching behavior even when bent or after hundreds of bending cycles.

Conclusions:

• A simple and efficient method for constructing robust filament-based memristors was developed.
• The flexible polymeric memristor shows potential for integration into next-generation flexible electronics.
• The findings address the critical challenge of conductive filament instability in memristor devices.