Enhancing the Resistive Switching Properties of Transparent HfO₂-Based Memristor Devices for Reliable Gasistor...

Area of Science:

• Materials Science
• Electrical Engineering
• Nanoscience

Background:

• Memristors are crucial for advanced electronic devices, including gas sensors (gasistors).
• Transparent memristors require stable performance and high reliability for practical applications.
• Rough surface electrodes can influence electric field distribution and device characteristics.

Purpose of the Study:

• To develop a transparent memristor with enhanced performance and reliability.
• To investigate the effect of a rough-surface bottom electrode (RS BE) on memristor characteristics.
• To evaluate the suitability of the developed memristor for gasistor applications.

Main Methods:

• Fabrication of transparent memristors utilizing a rough-surface bottom electrode.
• Characterization of electrical properties, including forming voltage, endurance, and on/off ratio.
• Assessment of device stability and current state retention in ambient air.

Main Results:

• The transparent memristor with RS BE exhibited low forming voltages (0.8 V).
• Achieved stable resistive switching with high endurance and an on/off ratio of approximately 125.
• Demonstrated sustained stable-current state for ~10^4 seconds, crucial for gasistor applications.

Conclusions:

• The rough-surface bottom electrode significantly enhances the performance and reliability of transparent memristors.
• The improved electric field control and oxygen vacancy management contribute to device stability.
• The developed transparent memristor shows great potential for advanced gasistor applications.