Hydrazine Intercalation into 2D MoTe₂ Field Effect Transistor as Charge Trapping Sites for Nonvolatile Memory...

Area of Science:

• Materials Science
• Condensed Matter Physics
• Nanotechnology

Background:

• Non-volatile memory is crucial for AI, big data, and IoT, but current fabrication is complex and material-intensive.
• Developing efficient and simplified memory devices is essential for advancing modern computing.

Purpose of the Study:

• To investigate the intercalation of hydrazine molecules into MoTe2 for electronic modulation.
• To develop a simplified memory device leveraging the unique properties induced by intercalation.

Main Methods:

• Efficient intercalation of hydrazine (N2H4) molecules into molybdenum ditelluride (MoTe2).
• Fabrication of a memory device utilizing the hydrazine-intercalated MoTe2.
• Characterization of the device's electrical properties, including hysteresis, retention, and current ratios.

Main Results:

• Hydrazine intercalation created stable charge-trapping centers in MoTe2.
• A controllable, reversible polar conversion and a giant hysteretic window (>60 V) lasting over one hour in air were observed.
• The fabricated memory device exhibited a large erase/program current ratio (~10^4) and excellent retention.

Conclusions:

• Interlayer molecular intercalation is a viable strategy for electronic modulation in 2D semiconductors.
• This approach offers a new paradigm for developing memory devices with simplified fabrication processes.
• The hydrazine-MoTe2 system demonstrates significant potential for next-generation non-volatile memory applications.