Negative Capacitance Transistors

Dr. Sayeef Salahuddin
Associate Professor Electrical Engineering and Computer Science, UC Berkeley

Cerent Engineering Science Complex, Salazar Hall 2009A
3:00 PM

Abstract – Phase transition materials have long been investigated for fundamental physics and also for potential application in electronics. In this presentation, I shall discuss how a controlled phase transition can lead to fundamentally new switching devices that has significantly less energy dissipation compared to the state of the art. In particular, I shall talk about the state of negative capacitance that can be achieved in certain material systems with stored energy of phase transition. Our recent experiments with ferroelectric materials have shown that such a state of negative capacitance can actually be achieved. I shall also describe our very recent results where such negative capacitance, when combined with conventional transistors, lead to effects that was long believed to be impossible. Finally, I shall discuss how these effects can usher in a new era of energy efficient electronics. with design considerations for PCB materials and the corresponding fabrication processes.

Dr. Sayeef Salahuddin is an associate professor of Electrical Engineering and Computer Sciences at the University of California, Berkeley. His research interests are in the interdisciplinary field of electronic transport in nanostructures currently focusing on novel electronic and spintronic devices for low power logic and memory applications. Salahuddin received a number of awards including the NSF CAREER award, the IEEE Nanotechnology Early Career Award, the Young Investigator Awards from the AFOSR and the ARO and best paper awards from IEEE Transactions on VLSI Systems and from the VLSI-TSA conference. He is on the editorial board of IEEE Electron Devices Letters and currently chairs the Electron Devices Society committee on Nanotechnology.