Electrical Re-Writable Non-Volatile Memory Device based on PEDOT:PSS Thin Film

Area of Science:

• Materials Science
• Electrical Engineering
• Solid-State Physics

Background:

• Poly(3,4 ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) is a conductive polymer with potential applications in electronic devices.
• Organic memory cells offer advantages such as low cost and flexibility.
• Understanding the switching mechanisms in PEDOT:PSS based devices is crucial for their development.

Purpose of the Study:

• To investigate the memory behavior of poly(3,4 ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) in a cross-bar structure.
• To characterize the switching properties, endurance, and retention of Al/PEDOT:PSS/Al memory cells.
• To elucidate the physical mechanism behind the observed bipolar switching behavior.

Main Methods:

• Fabrication of Al/PEDOT:PSS/Al memory cells.
• Performance evaluation using current-voltage (I-V) measurements.
• Assessment of device reliability through endurance and retention time tests.

Main Results:

• The fabricated Al/PEDOT:PSS/Al cells demonstrated a clear bipolar switching behavior.
• The memory cells exhibited reproducible switching characteristics.
• Endurance and retention time tests confirmed the stability and reliability of the device.

Conclusions:

• The Al/PEDOT:PSS/Al memory cells show promising bipolar switching and reproducible behavior.
• The observed switching is attributed to electrical field-induced dipolar reorientation in PEDOT:PSS, altering its conductivity.
• These findings support the potential of PEDOT:PSS for application in resistive switching memory devices.