Analysis of omega-gate nanowire devices from parasitic conduction to ionizing radiation effects
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1149/2.0141903jss http://hdl.handle.net/11449/188059 |
Resumo: | The proposal of this work is to present an analysis of omega-shaped-gate silicon nanowire field-effect-transistors operating in the subthreshold region. It is analyzed three channel widths (WNW), 220, 40 and 10 nm. In the widest device is noted a back interface conduction that it was extrapolated through numerical simulations adding the positive fixed charges (Qox) and interface traps (Nit) at the interface between the channel and the buried oxide. While studying the effects of these charges, it is noticed that besides causing a threshold voltage (VT) shift it does not present a significant variation in the subthreshold swing (SS). Since the total ionizing dose can be simulated by adding Nit and Qox in the gate and buried oxides, this study is extended, aiming to analyze the impact of ionizing radiation in the subthreshold region of nanowire devices. The nanowires presents a high immunity in SS due to the supercoupling provided by the small silicon height (hfin), which is confirmed through the analysis of the surface electrostatic potential. The hfin increase results in a worst coupling and, the Nit and Qox degrades the SS while increasing WNW. For WNW = 10 nm even with hfin = 65 nm, no significant influence in SS is observed. |
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Repositório Institucional da UNESP |
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2946 |
spelling |
Analysis of omega-gate nanowire devices from parasitic conduction to ionizing radiation effectsThe proposal of this work is to present an analysis of omega-shaped-gate silicon nanowire field-effect-transistors operating in the subthreshold region. It is analyzed three channel widths (WNW), 220, 40 and 10 nm. In the widest device is noted a back interface conduction that it was extrapolated through numerical simulations adding the positive fixed charges (Qox) and interface traps (Nit) at the interface between the channel and the buried oxide. While studying the effects of these charges, it is noticed that besides causing a threshold voltage (VT) shift it does not present a significant variation in the subthreshold swing (SS). Since the total ionizing dose can be simulated by adding Nit and Qox in the gate and buried oxides, this study is extended, aiming to analyze the impact of ionizing radiation in the subthreshold region of nanowire devices. The nanowires presents a high immunity in SS due to the supercoupling provided by the small silicon height (hfin), which is confirmed through the analysis of the surface electrostatic potential. The hfin increase results in a worst coupling and, the Nit and Qox degrades the SS while increasing WNW. For WNW = 10 nm even with hfin = 65 nm, no significant influence in SS is observed.LSI/PSI/USP University of Sao PauloSao Paulo State University (UNESP)Sao Paulo State University (UNESP)Universidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)Silva, VanessaMartino, JoaoAgopian, Paula [UNESP]2019-10-06T15:56:00Z2019-10-06T15:56:00Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleQ54-Q60http://dx.doi.org/10.1149/2.0141903jssECS Journal of Solid State Science and Technology, v. 8, n. 3, p. Q54-Q60, 2019.2162-87772162-8769http://hdl.handle.net/11449/18805910.1149/2.0141903jss2-s2.0-8507202090604969095954656960000-0002-0886-7798Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengECS Journal of Solid State Science and Technologyinfo:eu-repo/semantics/openAccess2021-10-22T21:03:14Zoai:repositorio.unesp.br:11449/188059Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:42:03.294062Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Analysis of omega-gate nanowire devices from parasitic conduction to ionizing radiation effects |
title |
Analysis of omega-gate nanowire devices from parasitic conduction to ionizing radiation effects |
spellingShingle |
Analysis of omega-gate nanowire devices from parasitic conduction to ionizing radiation effects Silva, Vanessa |
title_short |
Analysis of omega-gate nanowire devices from parasitic conduction to ionizing radiation effects |
title_full |
Analysis of omega-gate nanowire devices from parasitic conduction to ionizing radiation effects |
title_fullStr |
Analysis of omega-gate nanowire devices from parasitic conduction to ionizing radiation effects |
title_full_unstemmed |
Analysis of omega-gate nanowire devices from parasitic conduction to ionizing radiation effects |
title_sort |
Analysis of omega-gate nanowire devices from parasitic conduction to ionizing radiation effects |
author |
Silva, Vanessa |
author_facet |
Silva, Vanessa Martino, Joao Agopian, Paula [UNESP] |
author_role |
author |
author2 |
Martino, Joao Agopian, Paula [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Silva, Vanessa Martino, Joao Agopian, Paula [UNESP] |
description |
The proposal of this work is to present an analysis of omega-shaped-gate silicon nanowire field-effect-transistors operating in the subthreshold region. It is analyzed three channel widths (WNW), 220, 40 and 10 nm. In the widest device is noted a back interface conduction that it was extrapolated through numerical simulations adding the positive fixed charges (Qox) and interface traps (Nit) at the interface between the channel and the buried oxide. While studying the effects of these charges, it is noticed that besides causing a threshold voltage (VT) shift it does not present a significant variation in the subthreshold swing (SS). Since the total ionizing dose can be simulated by adding Nit and Qox in the gate and buried oxides, this study is extended, aiming to analyze the impact of ionizing radiation in the subthreshold region of nanowire devices. The nanowires presents a high immunity in SS due to the supercoupling provided by the small silicon height (hfin), which is confirmed through the analysis of the surface electrostatic potential. The hfin increase results in a worst coupling and, the Nit and Qox degrades the SS while increasing WNW. For WNW = 10 nm even with hfin = 65 nm, no significant influence in SS is observed. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T15:56:00Z 2019-10-06T15:56:00Z 2019-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1149/2.0141903jss ECS Journal of Solid State Science and Technology, v. 8, n. 3, p. Q54-Q60, 2019. 2162-8777 2162-8769 http://hdl.handle.net/11449/188059 10.1149/2.0141903jss 2-s2.0-85072020906 0496909595465696 0000-0002-0886-7798 |
url |
http://dx.doi.org/10.1149/2.0141903jss http://hdl.handle.net/11449/188059 |
identifier_str_mv |
ECS Journal of Solid State Science and Technology, v. 8, n. 3, p. Q54-Q60, 2019. 2162-8777 2162-8769 10.1149/2.0141903jss 2-s2.0-85072020906 0496909595465696 0000-0002-0886-7798 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
ECS Journal of Solid State Science and Technology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
Q54-Q60 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128267875516416 |