MANHASSET, NY -- A couple of late submissions to the upcoming IEEE International Electron Devices Meeting will detail record-breaking performance in transistors made from carbon and its derivatives.
IBM researchers will describe record RF performance from transistors made from synthesized graphene. The researchers achieved a 280-GHz cutoff frequency in a 40-nm gate-length FET, the fastest ever reported from synthesized graphene, according to IBM.
The second research paper from IBM outlines the first experimental demonstration of sub-10-nm transistors made from carbon nanotubes. The researchers built devices that achieved more than four times the current density (2.41 mA/µm) of the best competing silicon device, at a low operating voltage of 0.5 V. The researchers speculate that theoretical predictions were exceeded because the transistor gate modulates the charge not only in the channel but in the contact regions as well, which had not been considered previously.
The 2011 IEDM will be held in Washington, DC December 5-7.
The Silicon atom is about .24 nm. Carbon is about .14 - a bit more than half as big. It looks like there's still some room to make transistors smaller than the sub-10 nm. Not much though. I don't see any solids with a diameter smaller than carbon so that may be it for the traditional binary logic building block.
It's getting close to time to look for something that will give a couple more states from the same size device.
Feynman said that there is plenty of room at the bottom. We are hitting the bottom and it is full of surprises. Graphene, CNT, Nanowires, variation of FinFET will compete for the lower technology nodes for sure.
David Patterson, known for his pioneering research that led to RAID, clusters and more, is part of a team at UC Berkeley that recently made its RISC-V processor architecture an open source hardware offering. We talk with Patterson and one of his colleagues behind the effort about the opportunities they see, what new kinds of designs they hope to enable and what it means for today’s commercial processor giants such as Intel, ARM and Imagination Technologies.