Compound-Semiconductor-Based Field-Effect Transistors for Ultrasensitive Biomolecule Sensors

Area of Science:

• Materials Science
• Nanotechnology
• Biomedical Engineering

Background:

• Field-effect transistor (FET) biosensors are crucial for sensitive biomolecule detection.
• Compound semiconductors offer unique electronic properties for advanced biosensing.

Purpose of the Study:

• To review recent advances in compound-semiconductor FET biosensors.
• To explore detection mechanisms, fabrication strategies, and applications.
• To provide a roadmap for future development.

Main Methods:

• Review of compound semiconductor materials (e.g., MoS2, InSe, ZnO, In2O3).
• Exploration of bandgap modulation and carrier density variation detection mechanisms.
• Analysis of fabrication techniques for flexible and wearable FETs.
• Evaluation of applications in diagnostics, healthcare monitoring, and environmental safety.

Main Results:

• Compound semiconductors enable high sensitivity and specificity through bandgap modulation.
• Flexible and wearable FETs can be integrated with microfluidics and bioreceptors.
• Diverse applications exist in point-of-care diagnostics, implantable devices, and environmental monitoring.

Conclusions:

• Compound-semiconductor FETs are a promising platform for advanced bioelectronic systems.
• Scalable fabrication, multiplexed detection, and clinical integration are key future trends.
• Material innovation and system integration are crucial for next-generation diagnostic technologies.