Nanodevices Tend to Be Round

Under several circumstances, a nanowire transistor with a square cross-section behaves as a circular. Taking the Gate-All-Around junctionless transistor as a primary example, we investigate the transition of the conductive region from square to circle-like. In this case, the metamorphosis is accentu...

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Main Authors: Georges Pananakakis, Gérard Ghibaudo, Sorin Cristoloveanu
Format: Article
Language:English
Published: MDPI AG 2021-03-01
Series:Micromachines
Subjects:
SOI
Online Access:https://www.mdpi.com/2072-666X/12/3/330
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spelling doaj-9343d3ccb198404496e8edb1b2bea56e2021-03-21T00:03:17ZengMDPI AGMicromachines2072-666X2021-03-011233033010.3390/mi12030330Nanodevices Tend to Be RoundGeorges Pananakakis0Gérard Ghibaudo1Sorin Cristoloveanu2IMEP-LAHC, Université Grenoble Alpes, Minatec/INPG, 3 Parvis L. Neel, CS 50257, CEDEX 1, 38016 Grenoble, FranceIMEP-LAHC, Université Grenoble Alpes, Minatec/INPG, 3 Parvis L. Neel, CS 50257, CEDEX 1, 38016 Grenoble, FranceIMEP-LAHC, Université Grenoble Alpes, Minatec/INPG, 3 Parvis L. Neel, CS 50257, CEDEX 1, 38016 Grenoble, FranceUnder several circumstances, a nanowire transistor with a square cross-section behaves as a circular. Taking the Gate-All-Around junctionless transistor as a primary example, we investigate the transition of the conductive region from square to circle-like. In this case, the metamorphosis is accentuated by smaller size, lower doping, and higher gate voltage. After defining the geometrical criterion for square-to-circle shift, simulation results are used to document the main consequences. This transition occurs naturally in nanowires thinner than 50 nm. The results are rather universal, and supportive evidence is gathered from inversion-mode Gate-All-Around (GAA) MOSFETs as well as from thermal diffusion process.https://www.mdpi.com/2072-666X/12/3/330nanoelectronicsnanowirejunctionlessMOSFETgate-all-aroundSOI
collection DOAJ
language English
format Article
sources DOAJ
author Georges Pananakakis
Gérard Ghibaudo
Sorin Cristoloveanu
spellingShingle Georges Pananakakis
Gérard Ghibaudo
Sorin Cristoloveanu
Nanodevices Tend to Be Round
Micromachines
nanoelectronics
nanowire
junctionless
MOSFET
gate-all-around
SOI
author_facet Georges Pananakakis
Gérard Ghibaudo
Sorin Cristoloveanu
author_sort Georges Pananakakis
title Nanodevices Tend to Be Round
title_short Nanodevices Tend to Be Round
title_full Nanodevices Tend to Be Round
title_fullStr Nanodevices Tend to Be Round
title_full_unstemmed Nanodevices Tend to Be Round
title_sort nanodevices tend to be round
publisher MDPI AG
series Micromachines
issn 2072-666X
publishDate 2021-03-01
description Under several circumstances, a nanowire transistor with a square cross-section behaves as a circular. Taking the Gate-All-Around junctionless transistor as a primary example, we investigate the transition of the conductive region from square to circle-like. In this case, the metamorphosis is accentuated by smaller size, lower doping, and higher gate voltage. After defining the geometrical criterion for square-to-circle shift, simulation results are used to document the main consequences. This transition occurs naturally in nanowires thinner than 50 nm. The results are rather universal, and supportive evidence is gathered from inversion-mode Gate-All-Around (GAA) MOSFETs as well as from thermal diffusion process.
topic nanoelectronics
nanowire
junctionless
MOSFET
gate-all-around
SOI
url https://www.mdpi.com/2072-666X/12/3/330
work_keys_str_mv AT georgespananakakis nanodevicestendtoberound
AT gerardghibaudo nanodevicestendtoberound
AT sorincristoloveanu nanodevicestendtoberound
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