Positive non-linear capacitance: the origin of the steep subthreshold-slope in ferroelectric FETs.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
18 Oct 2019
18 Oct 2019
Historique:
received:
11
06
2019
accepted:
26
09
2019
entrez:
20
10
2019
pubmed:
20
10
2019
medline:
20
10
2019
Statut:
epublish
Résumé
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.
Identifiants
pubmed: 31628404
doi: 10.1038/s41598-019-51237-2
pii: 10.1038/s41598-019-51237-2
pmc: PMC6802213
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
14957Références
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