Crystal IS Inc of Green Island, NY, USA — a subsidiary of Tokyo-based Asahi Kasei that makes proprietary ultraviolet light-emitting diodes (UVC LEDs) — has announced serial production of 100mm-diameter single-crystal aluminium nitride (AlN) substrates with 99% usable area, based on current requirements for UVC LEDs, with manufacturing to take place in the USA. The ultra-wide bandgap and high thermal conductivity of AlN help to improve device reliability and performance in UVC LEDs and other next-generation RF and power devices...
Source: https://www.semiconductor-today.com/new ... 0624.shtml