29 Nov '16, 4pm

Germanium Can Take Transistors Where Silicon

Germanium Can Take Transistors Where Silicon

But as we eventually discovered, the III-V approach has some fundamental physical limitations. It’s also likely to be too expensive and difficult to integrate with existing silicon technology. So a few years ago, my team at Purdue University, in West Lafayette, Ind., began experimenting with a different kind of device: a transistor with a channel made of germanium. Since then, we’ve demonstrated the first complementary-metal-oxide-semiconductor (CMOS) circuits—the kind of logic inside today’s computers—made with germanium grown on ordinary silicon wafers. We have also constructed a range of different transistor architectures using the material. These include nanowire devices, which may be next in line when the present state-of-the-art transistor design, known as the FinFET, can’t be miniaturized any longer.

Full article: http://spectrum.ieee.org/semiconductors/materials/germani...

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