Another organization attempting to drive down the cost of GaN semiconductor materials is the Singapore Agency for Science, Technology, and Research as part of its GaN-on-Si Programme. One of the goals of this project is to explore the major technology and cost limitations for manufacturing GaN wafers, and to evaluate the challenges in growing defect-free GaN on lower-cost silicon substrates due to mismatches, lattice issues, and thermal mismatches.
The research program seeks to combine the high-performance characteristics of GaN with the more economical manufacturing economies of silicon in two key areas: in power and in RF/microwave applications. It will also evaluate other materials, including sapphire and silicon carbide (SiC), as potential base materials for GaN semiconductor devices.