Power semiconductor devices - without them, neither home appliances nor cars would work -

Abstract

The power semiconductor device industry remains a domain in which Japan retains a strong competitive edge within the global market. Today, silicon-based semiconductors dominate this field, holding an overwhelming market share. However, in recent years, silicon carbide (SiC) and gallium nitride (GaN) semiconductor devices have gradually emerged as increasingly prominent technologies, gaining recognition as viable commercial products.

This lecture will provide a comprehensive and accessible overview of the latest advancements in next-generation power semiconductor devices—technologies that are indispensable for realizing more efficient utilization of electrical energy. Particular emphasis will be placed on SiC and GaN power semiconductor devices, which are expected to experience significant growth in demand shortly.