MOTOROLA CREATES NEW SEMICONDUCTOR MATERIALS; POTENTIAL TO TRANSFORM MULTIPLE INDUSTRIES.Motorola Labs scientists are the first to successfully combine the best properties of workhorse silicon technology with the speed and optical capabilities of high-performance compound semiconductors that are known as the III-V materials.
The discovery, which solves a problem that has been vexing the semiconductor industry for nearly 30 years, opens the door to significantly less expensive optical communications Optical communications
The transmission of speech, data, video, and other information by means of the visible and the infrared portion of the electromagnetic spectrum. , high-frequency radio devices and high-speed microprocessor-based subsystems by potentially eliminating the current cost barriers holding back many advanced applications. For consumers, the technology should result in smarter electronic products that cost less, perform better and have exciting new features. The technology will change the economics and accelerate the development of new applications, such as broadband "fiber" cable to the home, streaming video A one-way video transmission over a data network. It is widely used on the Web as well as company networks to play video clips and video broadcasts. Computers in home networks stream video to digital media hubs connected to a home theater. to cell phones and automotive collision avoidance systems (1) See adaptive cruise control.
(2) A passenger car system that detects objects on the road that the driver may not be able to see. Using radar or infrared sensors, distant objects, such as a deer crossing the road at night or in a fog, are projected onto the .
Other potential markets include data storage, lasers for such consumer products as DVD players, medical equipment, radar, automotive electronics, lighting, and photovoltaics. Until now, there has been no way to combine light-emitting semiconductors with silicon integrated circuits Integrated circuits
Miniature electronic circuits produced within and upon a single semiconductor crystal, usually silicon. Integrated circuits range in complexity from simple logic circuits and amplifiers, about 1/20 in. (1. on a single chip, and the need to use discrete components has compromised the cost, size, speed and efficiency of high-speed communications equipment and devices.
"This is a tremendous achievement by our scientists and one that has the potential, when fully commercialized, to transform the industry in a way that is similar to the transition from discrete semiconductors to integrated circuits," said Dennis Roberson, senior vice president and chief technology officer, Motorola, Inc.
"Motorola's announcement that they have successfully made GaAs transistors in a thin layer of GaAs grown on a silicon wafer could go down in history as a major turning point for the semiconductor industry," said Steve Cullen, director & principal analyst, Semiconductor Research, Cahners In-Stat Group.
The technology enables very thin layers of so-called III-V semiconductor materials Semiconductor materials are insulators at absolute zero temperature that conduct electricity in a limited way at room temperature (see also Semiconductor). The defining property of a semiconductor material is that it can be doped with impurities that alter its electronic properties (which include gallium arsenide An alloy of gallium and arsenic compound (GaAs) that is used as the base material for chips. Several times faster than silicon, it is used in high frequency applications such as cellphones, DVD players and fiber optics. , indium phosphide phosphide
Any of a class of chemical compounds in which phosphorous is combined with a metal. Phosphides exhibit a wide variety of chemical and physical properties. Phosphides that are rich in metal have high melting points and are hard, brittle, and chemically inert; these , gallium nitride An alloy of gallium and nitrogen (GaN) that is used in semiconductor devices for lasers and LEDs, including blue lasers. Gallium nitride has the thermal and chemical stability required in laser applications. See gallium arsenide. 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 mis-match 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 introducing 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 Graphic, textual, tabular, digital, video, or other presentations of target intelligence, primarily designed to support operations against designated targets by one or more weapon(s) systems. in the process.
The idea was originally developed by Motorola Labs' scientist, Dr. Jamal Ramdani. Developing and proving the exact recipe and process grew out of work done by a broad team of scientists and engineers. Motorola Labs is now working on developing the optimum intermediate layer for indium phosphide and other materials.