Radiation-tolerant atomic-layer-scale RF system for spaceborne communication

Area of Science:

• Materials Science
• Aerospace Engineering
• Electrical Engineering

Background:

• Space exploration demands miniaturized, lightweight communication electronics.
• Space radiation poses a significant challenge to the reliability of electronic circuits.
• Existing technologies struggle with long-term stability in harsh space environments.

Purpose of the Study:

• To investigate the radiation effects on satellite-based devices.
• To develop and test a radiation-tolerant radio frequency (RF) communication system for spaceborne applications.
• To evaluate the performance and stability of 2D materials in the space environment.

Main Methods:

• Fabrication of a 4-inch wafer-scale monolayer 2D MoS2 transistor-based RF system.
• On-orbit experimentation of the 2D communication system in low Earth orbit (approx. 517 km).
• Monitoring of bit error rate (BER) and system stability over 9 months.

Main Results:

• The 2D MoS2 communication system demonstrated substantial radiation tolerance.
• Maintained a bit error rate (BER) below 10^-8 after 9 months in orbit.
• Predicted lifespan of approximately 271 years in a geosynchronous orbit environment.

Conclusions:

• Atomically thin 2D materials exhibit minimal radiation-induced damage, making them suitable for space.
• The developed 2D transistor-based RF system offers a highly stable and radiation-tolerant solution for spaceborne communication.
• This technology presents unique prospects for future 2D electronics in demanding space applications.