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research article

Negative Capacitance as Universal Digital and Analog Performance Booster for Complementary MOS Transistors

Saeidi, Ali  
•
Jazaeri, Farzan  
•
Stolichnov, Igor  
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June 24, 2019
Scientific Reports

Boltzmann electron energy distribution poses a fundamental limit to lowering the energy dissipation of conventional MOS devices, a minimum increase of the gate voltage, i.e. 60 mV, is required for a 10-fold increase in drain-to-source current at 300 K. Negative Capacitance (NC) in ferroelectric materials is proposed in order to address this physical limitation of CMOS technology. A polarization destabilization in ferroelectrics causes an effective negative permittivity, resulting in a differential voltage amplification and a reduced subthreshold swing when integrated into the gate stack of a transistor. The novelty and universality of this approach relate to the fact that the gate stack is not anymore a passive part of the transistor and contributes to signal amplification. In this paper, we experimentally validate NC as a universal performance booster: (i) for complementary MOSFETs, of both n- and p-type in an advanced CMOS technology node, and, (ii) for both digital and analog significant enhancements of key figures of merit for information processing (subthreshold swing, overdrive, and current efficiency factor). Accordingly, a sub-thermal swing down to 10 mV/decade together with an enhanced current efficiency factor up to 105 V-1 is obtained in both n- and p-type MOSFETs at room temperature by exploiting a PZT capacitor as the NC booster. As a result of the subthreshold swing reduction and overdrive improvement observed by NC, the required supply voltage to provide the same on-current is reduced by approximately 50%.

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Type
research article
DOI
10.1038/s41598-019-45628-8
Web of Science ID

WOS:000472597400008

Author(s)
Saeidi, Ali  
Jazaeri, Farzan  
Stolichnov, Igor  
Enz, Christian C.  
Ionescu, Adrian M.  
Date Issued

2019-06-24

Publisher

Nature Research

Published in
Scientific Reports
Volume

9

Article Number

9105

Subjects

Multidisciplinary Sciences

•

Science & Technology - Other Topics

•

simulation

•

films

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
NANOLAB  
ICLAB  
Available on Infoscience
July 11, 2019
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/159010
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