‘Graphene Quilts’ To Cool High-Power GaN Devices

Gallium Nitride is a binary semiconductor commonly used in bright LEDs since 1990's and used in wireless applications due to its high voltage operation and high efficiency operation. Since 2006 Graphene Transistors have been offered commercially. But like all other high power devices, the problem is to remove significant amount of dissipated heat which has to be removed fast and efficiently. Various Thermal Management solutions such as Composite substrates or  Flip-Chip Bonding   (also known as Controlled Collapse Chip connection or [...]