Researchers at the Korea Electric Research Institute (KERI) have identified the root cause of a critical defect hindering the production of next-generation silicon carbide (SiC) power semiconductors. This “killer defect” significantly impacts the performance and reliability of these devices, crucial for advancements in electric vehicles and power grids. The research team successfully pinpointed the origin of the flaw during the manufacturing process, a breakthrough published in an international academic journal. SiC semiconductors are increasingly favored for their efficiency and ability to operate at higher temperatures and voltages compared to traditional silicon-based semiconductors. Resolving this defect is expected to accelerate the commercialization of more efficient and robust power electronics. KERI’s findings offer a pathway to improve SiC semiconductor yield and reduce production costs, bolstering South Korea’s competitiveness in the global semiconductor market. The research details a solution to mitigate the issue, paving the way for wider adoption of SiC technology.