Source-measuring unit for characterizing resistive switching devices

Area of Science:

• Materials Science
• Electrical Engineering
• Device Physics

Background:

• Resistive Switching (RS) devices are crucial for next-generation electronics.
• Accurate characterization of RS devices requires specialized instrumentation.
• Existing equipment may lack the speed and dynamic range for comprehensive RS analysis.

Purpose of the Study:

• To present a custom-built, versatile source-measuring unit (SMU) for characterizing Resistive Switching (RS) devices.
• To enable precise control and measurement of voltage and current during RS device operation.
• To facilitate the study of device dynamics through rapid current range switching.

Main Methods:

• Development of a home-made SMU using operational amplifiers.
• Implementation of rapid switching between high (±25 mA) and low (∼100 nA) current measurement ranges.
• Integration with a PC via a general-purpose acquisition system (1 DAC, 2 ADC).
• Utilizing the SMU to generate voltage pulses and measure current responses.

Main Results:

• The SMU successfully applies voltages up to ±10 V with fast settling times (<1 µs).
• Achieved rapid switching between high current measurements (<25 µs) and low current measurements (<2 ms) with low noise (<1 nA).
• Demonstrated the capability to intercalate writing and reading pulses for RS device characterization.
• Successfully obtained hysteresis switching loops (HSLs) for ferroelectric tunnel junctions.

Conclusions:

• The developed home-made SMU is a cost-effective and effective tool for characterizing RS devices.
• The SMU's unique rapid current switching capability enhances the analysis of dynamic RS phenomena.
• This instrumentation provides a valuable resource for researchers studying memristive and ferroelectric devices.