Sustainable Manufacturing and Applications of Wide-Bandgap Semiconductors

Wide-bandgap (WBG) semiconductors such as silicon carbide (SiC) and gallium nitride (GaN) have become pivotal in high-power, high-frequency, and high-temperature applications. Their superior properties, including higher thermal conductivity, breakdown voltage, and energy efficiency, make them essential for advanced technologies like electric vehicles, renewable energy systems, and 5G infrastructure. However, their production processes are resource-intensive and pose significant environmental challenges. This review explores recent innovations in sustainable WBG manufacturing, focusing on low-energy epitaxial growth techniques, recycling of semiconductor materials, and efforts to reduce toxic byproducts. It also highlights the role of WBG materials in driving next-generation electronic systems and addresses the environmental concerns associated with scaling these materials for widespread use. The potential of Ultrawide-Bandgap (UWBG) materials for even more extreme applications is discussed, underscoring the need for continued innovation in sustainable practices to ensure the long-term viability of WBG technologies.