Cubic Phase Light Emitters Hetero-integrated on Silicon.

Area of Science:

• Materials Science
• Semiconductor Physics
• Optoelectronics

Background:

• Gallium Nitride (GaN) emitters traditionally crystallize in a hexagonal phase.
• Hexagonal GaN exhibits inherent polarization, impacting device performance.
• Integration on silicon substrates is desirable for scalability and cost reduction.

Purpose of the Study:

• To introduce a novel cubic phase GaN emitter technology.
• To achieve polarization-free emission from GaN devices.
• To enable co-integration of GaN emitters on silicon (Si) substrates.

Main Methods:

• Development of cubic phase GaN crystal growth.
• Co-integration of cubic GaN on CMOS-compatible Si(100) substrates.
• Characterization of emitter properties, focusing on polarization.

Main Results:

• Successful fabrication of cubic phase GaN emitters.
• Demonstration of polarization-free emission characteristics.
• Achieved co-integration on scalable Si(100) substrates.

Conclusions:

• Cubic phase GaN emitters offer a polarization-free alternative to hexagonal GaN.
• Co-integration on Si(100) provides a pathway for cost-effective and scalable GaN emitter manufacturing.
• This technology advances GaN-based optoelectronics for broader applications.