To: Gottfried who wrote (313 ) 11/7/2001 8:24:25 AM From: Proud_Infidel Respond to of 25522 Motorola Creates New Semiconductor Material Motorola, Inc has announced that its lab's scientists have developed a new type of semiconductor material (called III-V) that combines the best properties of silicon technology with the speed and optical capabilities of high-performance compound semiconductors. According to the company, the discovery solves a problem that has been vexing the semiconductor industry for nearly 30 years, and opens the door to significantly less expensive optical communications, high-frequency radio devices and high-speed microprocessor-based subsystems by potentially eliminating the current cost barriers holding back many advanced applications. The technology enables very thin layers of III-V semiconductor materials (which include gallium arsenide, indium phosphide, gallium nitride and other high-performance / light-emitting compounds) to be grown on a silicon substrate. Until now, this has been a virtually impossible task due to fundamental material mismatch issues. Specifically, the underlying crystalline structures of silicon and the various III-V compounds do not match. As a result, previous industry attempts to combine them resulted in dislocations or "cracks" in the material as the two mismatched structures struggled to bond. The key to solving the problem was to introduce an intermediate layer of material between the silicon and the III-V material. The solution was found in discovering exactly the right "recipe" for a material that would easily bond with both silicon and GaAs, reducing the strain between the two target materials in the process. (November 2001 Issue, Nikkei Electronics Asia)