Positive non-linear capacitance: the origin of the steep subthreshold-slope in ferroelectric FETs-Reference-Cited by-同舟云学术

Positive non-linear capacitance: the origin of the steep subthreshold-slope in ferroelectric FETs

Published:2019-10-18 Issue:1 Volume:9 Page:
ISSN:2045-2322
Container-title:Scientific Reports
language:en
Short-container-title:Sci Rep

Author:

Alam Md Nur K.,Roussel P.,Heyns M.,Van Houdt J.

Abstract

Abstract We show that the non-linear positive capacitance (PC) of ferroelectrics (FE) can explain the steep subthreshold-slope (SS) observed in FE based MOSFETs and often attributed to the existence of a negative capacitance in FE capacitors. Physically attainable and unattainable regions of the S-shape curve used in the negative capacitance theory are investigated by self-consistently solving Landau-Khalatnikov and Maxwell equations and by experimental validation. Finally, the conditions for attaining a steep SS in FE based MOSFETs assuming only positive capacitances are discussed.

Publisher

Springer Science and Business Media LLC

Subject

Multidisciplinary

Link

http://www.nature.com/articles/s41598-019-51237-2.pdf

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