Iontronic memories based on ionic redox systems: operation protocols

Area of Science:

• * Materials Science
• * Electrical Engineering
• * Electrochemistry

Background:

• * A novel electrochemical micro-cell, the ionic voltage effect soft triode (IVEST), was developed.
• * The IVEST device utilizes voltage-controlled ion concentration and diffusion for its operation.
• * Initial IVEST versions exhibited a long memory effect (up to 6 hours) but had low memory contrast.

Purpose of the Study:

• * To optimize and enhance the memory contrast of the IVEST device.
• * To explore the integration of the IVEST into a memory application concept.
• * To investigate the unique memory characteristics and secondary storage potential of iontronic devices.

Main Methods:

• * Development and implementation of a new external electrical circuit layout.
• * Introduction of a novel operation protocol for device control.
• * Characterization of the IVEST device's memory performance and stability.

Main Results:

• * Significantly increased memory contrast in the IVEST device.
• * Demonstrated a stable memory effect lasting up to 6 hours.
• * Revealed secondary information storage linked to read-out frequency in iontronic memories.

Conclusions:

• * The optimized IVEST device shows significant promise for advanced memory applications.
• * The enhanced memory contrast and stability make IVEST a viable candidate for iontronic memory.
• * The discovered secondary storage mechanism offers new possibilities for information encoding.