Integrated Strategy toward Self-Powering and Selectivity Tuning of Semiconductor Gas Sensors

Inorganic conductometric gas sensors struggle to overcome limitations in high power consumption and poor selectivi-ty. Herein, recent advances in developing self-powered gas sensors with tunable selectivity are introduced. Alternative general approaches for powering gas sensors were realized via pro...

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Autores: Gad, Alaaeldin, Hoffmann, Martin W. G., Casals Guillén, Olga, Mayrhofer, Leonhard, Fàbrega Gallego, Cristian, Caccamo, Lorenzo, Hernández Ramírez, Francisco, Mohajerani, Matin S., Moseler, Michael, Shen, Hao, Waag, Andreas, Prades García, Juan Daniel
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2016
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/102442
Acesso em linha:https://hdl.handle.net/2445/102442
Access Level:acceso abierto
Palavra-chave:Detectors de gasos
Nanoestructures
Semiconductors
Gas detectors
Nanostructures
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spelling Integrated Strategy toward Self-Powering and Selectivity Tuning of Semiconductor Gas SensorsGad, AlaaeldinHoffmann, Martin W. G.Casals Guillén, OlgaMayrhofer, LeonhardFàbrega Gallego, CristianCaccamo, LorenzoHernández Ramírez, FranciscoMohajerani, Matin S.Moseler, MichaelShen, HaoWaag, AndreasPrades García, Juan DanielDetectors de gasosNanoestructuresSemiconductorsGas detectorsNanostructuresSemiconductorsInorganic conductometric gas sensors struggle to overcome limitations in high power consumption and poor selectivi-ty. Herein, recent advances in developing self-powered gas sensors with tunable selectivity are introduced. Alternative general approaches for powering gas sensors were realized via proper integration of complementary functionalities (namely; powering and sensing) in a singular heterostructure. These solar light driven gas sensors operating at room temperature without applying any additional external powering sources are comparatively discussed. The TYPE-1 gas sensor based on integration of pure inorganic interfaces (e.g. CdS/n-ZnO/p-Si) is capable of delivering a self-sustained sensing response, while it shows a non-selective interaction towards oxidizing and reducing gases. The structural and the optical merits of TYPE-1 sensor are investigated giving more insights into the role of light activation on the modu-lation of the self-powered sensing response. In the TYPE-2 sensor, the selectivity of inorganic materials is tailored through surface functionalization with self-assembled organic monolayers (SAMs). Such hybrid interfaces (e.g. SAMs/ZnO/p-Si) have specific surface interactions with target gases compared to the non-specific oxidation-reduction interactions governing the sensing mechanism of simple inorganic sensors. The theoretical modeling using density functional theory (DFT) has been used to simulate the sensing behavior of inorganic/organic/gas interfaces, revealing that the alignment of organic/gas frontier molecular orbitals with respect to the inorganic Fermi level is the key factor for tuning selectivity. These platforms open new avenues for developing advanced energy-neutral gas sensing devices and concepts.American Chemical Society2016201720162016info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion11 p.application/pdfhttps://hdl.handle.net/2445/102442Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/doi/10.1021/acssensors.6b00508Versió postprint del document publicat a: http://dx.doi.org/10.1021/acssensors.6b00508ACS Sensors, 2016, vol.1, num.10, p. 1256–1264http://dx.doi.org/10.1021/acssensors.6b00508info:eu-repo/grantAgreement/EC/FP7/336917(c) American Chemical Society , 2016info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1024422026-05-29T05:05:01Z
dc.title.none.fl_str_mv Integrated Strategy toward Self-Powering and Selectivity Tuning of Semiconductor Gas Sensors
title Integrated Strategy toward Self-Powering and Selectivity Tuning of Semiconductor Gas Sensors
spellingShingle Integrated Strategy toward Self-Powering and Selectivity Tuning of Semiconductor Gas Sensors
Gad, Alaaeldin
Detectors de gasos
Nanoestructures
Semiconductors
Gas detectors
Nanostructures
Semiconductors
title_short Integrated Strategy toward Self-Powering and Selectivity Tuning of Semiconductor Gas Sensors
title_full Integrated Strategy toward Self-Powering and Selectivity Tuning of Semiconductor Gas Sensors
title_fullStr Integrated Strategy toward Self-Powering and Selectivity Tuning of Semiconductor Gas Sensors
title_full_unstemmed Integrated Strategy toward Self-Powering and Selectivity Tuning of Semiconductor Gas Sensors
title_sort Integrated Strategy toward Self-Powering and Selectivity Tuning of Semiconductor Gas Sensors
dc.creator.none.fl_str_mv Gad, Alaaeldin
Hoffmann, Martin W. G.
Casals Guillén, Olga
Mayrhofer, Leonhard
Fàbrega Gallego, Cristian
Caccamo, Lorenzo
Hernández Ramírez, Francisco
Mohajerani, Matin S.
Moseler, Michael
Shen, Hao
Waag, Andreas
Prades García, Juan Daniel
author Gad, Alaaeldin
author_facet Gad, Alaaeldin
Hoffmann, Martin W. G.
Casals Guillén, Olga
Mayrhofer, Leonhard
Fàbrega Gallego, Cristian
Caccamo, Lorenzo
Hernández Ramírez, Francisco
Mohajerani, Matin S.
Moseler, Michael
Shen, Hao
Waag, Andreas
Prades García, Juan Daniel
author_role author
author2 Hoffmann, Martin W. G.
Casals Guillén, Olga
Mayrhofer, Leonhard
Fàbrega Gallego, Cristian
Caccamo, Lorenzo
Hernández Ramírez, Francisco
Mohajerani, Matin S.
Moseler, Michael
Shen, Hao
Waag, Andreas
Prades García, Juan Daniel
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Detectors de gasos
Nanoestructures
Semiconductors
Gas detectors
Nanostructures
Semiconductors
topic Detectors de gasos
Nanoestructures
Semiconductors
Gas detectors
Nanostructures
Semiconductors
description Inorganic conductometric gas sensors struggle to overcome limitations in high power consumption and poor selectivi-ty. Herein, recent advances in developing self-powered gas sensors with tunable selectivity are introduced. Alternative general approaches for powering gas sensors were realized via proper integration of complementary functionalities (namely; powering and sensing) in a singular heterostructure. These solar light driven gas sensors operating at room temperature without applying any additional external powering sources are comparatively discussed. The TYPE-1 gas sensor based on integration of pure inorganic interfaces (e.g. CdS/n-ZnO/p-Si) is capable of delivering a self-sustained sensing response, while it shows a non-selective interaction towards oxidizing and reducing gases. The structural and the optical merits of TYPE-1 sensor are investigated giving more insights into the role of light activation on the modu-lation of the self-powered sensing response. In the TYPE-2 sensor, the selectivity of inorganic materials is tailored through surface functionalization with self-assembled organic monolayers (SAMs). Such hybrid interfaces (e.g. SAMs/ZnO/p-Si) have specific surface interactions with target gases compared to the non-specific oxidation-reduction interactions governing the sensing mechanism of simple inorganic sensors. The theoretical modeling using density functional theory (DFT) has been used to simulate the sensing behavior of inorganic/organic/gas interfaces, revealing that the alignment of organic/gas frontier molecular orbitals with respect to the inorganic Fermi level is the key factor for tuning selectivity. These platforms open new avenues for developing advanced energy-neutral gas sensing devices and concepts.
publishDate 2016
dc.date.none.fl_str_mv 2016
2016
2016
2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/102442
url https://hdl.handle.net/2445/102442
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1021/acssensors.6b00508
Versió postprint del document publicat a: http://dx.doi.org/10.1021/acssensors.6b00508
ACS Sensors, 2016, vol.1, num.10, p. 1256–1264
http://dx.doi.org/10.1021/acssensors.6b00508
info:eu-repo/grantAgreement/EC/FP7/336917
dc.rights.none.fl_str_mv (c) American Chemical Society , 2016
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Chemical Society , 2016
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 11 p.
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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