Intrinsic Polarization Superjunctions Boost GaN-On-Silicon Power Devices (EPFL) - Semiconductor Engineering

Researchers from École Polytechnique Fédérale de Lausanne (EPFL) have published a technical paper in Nature Electronics titled 'Intrinsic Polarization Superjunctions in III-Nitride Heterostructures fo... Read original →

The breakthrough by EPFL in intrinsic polarization superjunctions within III-Nitride heterostructures marks a pivotal advancement in GaN-on-Si power device engineering. By mitigating electric field crowding and buffer trapping, this innovation significantly enhances breakdown voltage and device efficiency, directly benefiting 5G infrastructure, electric vehicles, and fast-charging systems. From a technical standpoint, it accelerates the shift toward superjunction architectures on Si substrates, challenging existing design paradigms. From a geopolitical and supply chain perspective, this development could erode the competitive edge of traditional GaN vendors, especially in Western markets. Major players like TSMC and STMicroelectronics may respond with accelerated IP filings to secure market dominance. Within 12–24 months, this innovation is expected to catalyze a wave of device architecture evolution, particularly in high-efficiency, high-frequency applications, reshaping the competitive landscape of power electronics.