Technological advances of graphene solution-gated field-effect transistors for biosensing applications

In response to the growing need for highly sensitive, selective, and stable devices for biomedical applications, this thesis focuses on developing graphene Solution-Gated Field-Effect transistors (gSGFETs) for biosensing. Graphene’s combination of electrical performance, biocompatibility, and surfac...

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Detalles Bibliográficos
Autor: Bono Ros, Laura
Tipo de recurso: tesis de maestría
Fecha de publicación:2025
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/452108
Acceso en línea:https://hdl.handle.net/2117/452108
Access Level:acceso abierto
Palabra clave:Graphene
Field-effect transistors
Biosensors
GSGFET
Alumina (Al2O3)
ALD
Biosensing applications
Grafè
Transistors d'efecte de camp
Àrees temàtiques de la UPC::Enginyeria electrònica::Components electrònics::Transistors
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spelling Technological advances of graphene solution-gated field-effect transistors for biosensing applicationsTechnological advances of graphene Solution-Gated Field-Effect Transistors for biosensing applicationsBono Ros, LauraGrapheneField-effect transistorsBiosensorsGrapheneGSGFETAlumina (Al2O3)ALDBiosensing applicationsGrafèTransistors d'efecte de campBiosensorsÀrees temàtiques de la UPC::Enginyeria electrònica::Components electrònics::TransistorsIn response to the growing need for highly sensitive, selective, and stable devices for biomedical applications, this thesis focuses on developing graphene Solution-Gated Field-Effect transistors (gSGFETs) for biosensing. Graphene’s combination of electrical performance, biocompatibility, and surface sensitivity makes it ideal for detecting biological analytes. A key aspect of gSGFETs is the passivation layer, which isolates the device from the electrolyte while allowing access to the active channel. Conventional materials like SU-8 offer biocompatibility but suffer from limited chemical stability. Alternatively, the use of alumina (Al₂O₃), deposited by atomic layer deposition (ALD), has been demonstrated to be a suitable alternative. This work investigates the implementation of the alumina passivation strategy in the IMB-CNM clean room. The fabricated devices were characterized both morphologically and electrically, and benchmarked against SU-8-based and commercial technologies. They showed reduced gate leakage and improved chemical robustness, supporting their suitability for long-term biosensing applications and functionalization processes.Universitat Politècnica de CatalunyaSerra Graells, FrancescIlla Vila, Xavier20252025-07-1120262026-01-29master thesishttp://purl.org/coar/resource_type/c_bdccNAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/masterThesisapplication/pdfhttps://hdl.handle.net/2117/452108reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/4521082026-05-27T15:37:01Z
dc.title.none.fl_str_mv Technological advances of graphene solution-gated field-effect transistors for biosensing applications
Technological advances of graphene Solution-Gated Field-Effect Transistors for biosensing applications
title Technological advances of graphene solution-gated field-effect transistors for biosensing applications
spellingShingle Technological advances of graphene solution-gated field-effect transistors for biosensing applications
Bono Ros, Laura
Graphene
Field-effect transistors
Biosensors
Graphene
GSGFET
Alumina (Al2O3)
ALD
Biosensing applications
Grafè
Transistors d'efecte de camp
Biosensors
Àrees temàtiques de la UPC::Enginyeria electrònica::Components electrònics::Transistors
title_short Technological advances of graphene solution-gated field-effect transistors for biosensing applications
title_full Technological advances of graphene solution-gated field-effect transistors for biosensing applications
title_fullStr Technological advances of graphene solution-gated field-effect transistors for biosensing applications
title_full_unstemmed Technological advances of graphene solution-gated field-effect transistors for biosensing applications
title_sort Technological advances of graphene solution-gated field-effect transistors for biosensing applications
dc.creator.none.fl_str_mv Bono Ros, Laura
author Bono Ros, Laura
author_facet Bono Ros, Laura
author_role author
dc.contributor.none.fl_str_mv Serra Graells, Francesc
Illa Vila, Xavier
dc.subject.none.fl_str_mv Graphene
Field-effect transistors
Biosensors
Graphene
GSGFET
Alumina (Al2O3)
ALD
Biosensing applications
Grafè
Transistors d'efecte de camp
Biosensors
Àrees temàtiques de la UPC::Enginyeria electrònica::Components electrònics::Transistors
topic Graphene
Field-effect transistors
Biosensors
Graphene
GSGFET
Alumina (Al2O3)
ALD
Biosensing applications
Grafè
Transistors d'efecte de camp
Biosensors
Àrees temàtiques de la UPC::Enginyeria electrònica::Components electrònics::Transistors
description In response to the growing need for highly sensitive, selective, and stable devices for biomedical applications, this thesis focuses on developing graphene Solution-Gated Field-Effect transistors (gSGFETs) for biosensing. Graphene’s combination of electrical performance, biocompatibility, and surface sensitivity makes it ideal for detecting biological analytes. A key aspect of gSGFETs is the passivation layer, which isolates the device from the electrolyte while allowing access to the active channel. Conventional materials like SU-8 offer biocompatibility but suffer from limited chemical stability. Alternatively, the use of alumina (Al₂O₃), deposited by atomic layer deposition (ALD), has been demonstrated to be a suitable alternative. This work investigates the implementation of the alumina passivation strategy in the IMB-CNM clean room. The fabricated devices were characterized both morphologically and electrically, and benchmarked against SU-8-based and commercial technologies. They showed reduced gate leakage and improved chemical robustness, supporting their suitability for long-term biosensing applications and functionalization processes.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-07-11
2026
2026-01-29
dc.type.none.fl_str_mv master thesis
http://purl.org/coar/resource_type/c_bdcc
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/452108
url https://hdl.handle.net/2117/452108
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universitat Politècnica de Catalunya
publisher.none.fl_str_mv Universitat Politècnica de Catalunya
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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