A parts per billion (ppb) sensor for NO2 with microwatt (μW) power requirements based on micro light plates

A film of gas sensitive ZnO nanoparticles has been coupled with a low-power micro light plate (μLP) to achieve a NO2-parts-per-billion conductometric gas sensor operating at room temperature. In this μLP configuration, an InGaN-based LED (emitting at 455 nm) is integrated at a few hundred nanometers...

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Autores: Casals Guillén, Olga, Markiewicz, Nicolai, Fàbrega Gallego, Cristian, Gràcia Tortadés, Isabel, Cané i Ballart, Carles, Wasisto, Hutomo Suryo, Waag, Andreas, Prades García, Juan Daniel
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/130016
Acceso en línea:https://hdl.handle.net/2445/130016
Access Level:acceso abierto
Palabra clave:Detectors de gasos
Electrònica de potència
Nanotecnologia
Gas detectors
Power electronics
Nanotechnology
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spelling A parts per billion (ppb) sensor for NO2 with microwatt (μW) power requirements based on micro light platesCasals Guillén, OlgaMarkiewicz, NicolaiFàbrega Gallego, CristianGràcia Tortadés, IsabelCané i Ballart, CarlesWasisto, Hutomo SuryoWaag, AndreasPrades García, Juan DanielDetectors de gasosElectrònica de potènciaNanotecnologiaGas detectorsPower electronicsNanotechnologyA film of gas sensitive ZnO nanoparticles has been coupled with a low-power micro light plate (μLP) to achieve a NO2-parts-per-billion conductometric gas sensor operating at room temperature. In this μLP configuration, an InGaN-based LED (emitting at 455 nm) is integrated at a few hundred nanometers distance from the sensor material, leading to sensor photoactivation with well controlled, uniform, and high irradiance conditions, and very low electrical power needs. The response curves to different NO2 concentrations as a function of the irradiance displayed a bell-like shape. Responses of 20% to 25 ppb of NO2 were already observed at irradiances of 5 mWatts·cm-2 (applying an electrical power as low as 30 μW). In the optimum illumination conditions (around 60 mWatts·cm-2, or 200 μW of electric power), responses of 94% to 25 ppb were achieved, corresponding to a lower detection limit of 1 ppb of NO2. Higher irradiance values worsened the sensor response in the parts-per-billion range of NO2 concentrations. The responses to other gases such as NH3, CO, and CH4 were much smaller, showing a certain selectivity toward NO2. The effects of humidity on the sensor response are also discussed.American Chemical Society2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/130016Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésVersió postprint del document publicat a: https://doi.org/10.1021/acssensors.9b00150ACS Sensors, 2019, vol. in presshttps://doi.org/10.1021/acssensors.9b00150info:eu-repo/grantAgreement/EC/FP7/336917(c) American Chemical Society , 2019info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1300162026-05-27T06:46:51Z
dc.title.none.fl_str_mv A parts per billion (ppb) sensor for NO2 with microwatt (μW) power requirements based on micro light plates
title A parts per billion (ppb) sensor for NO2 with microwatt (μW) power requirements based on micro light plates
spellingShingle A parts per billion (ppb) sensor for NO2 with microwatt (μW) power requirements based on micro light plates
Casals Guillén, Olga
Detectors de gasos
Electrònica de potència
Nanotecnologia
Gas detectors
Power electronics
Nanotechnology
title_short A parts per billion (ppb) sensor for NO2 with microwatt (μW) power requirements based on micro light plates
title_full A parts per billion (ppb) sensor for NO2 with microwatt (μW) power requirements based on micro light plates
title_fullStr A parts per billion (ppb) sensor for NO2 with microwatt (μW) power requirements based on micro light plates
title_full_unstemmed A parts per billion (ppb) sensor for NO2 with microwatt (μW) power requirements based on micro light plates
title_sort A parts per billion (ppb) sensor for NO2 with microwatt (μW) power requirements based on micro light plates
dc.creator.none.fl_str_mv Casals Guillén, Olga
Markiewicz, Nicolai
Fàbrega Gallego, Cristian
Gràcia Tortadés, Isabel
Cané i Ballart, Carles
Wasisto, Hutomo Suryo
Waag, Andreas
Prades García, Juan Daniel
author Casals Guillén, Olga
author_facet Casals Guillén, Olga
Markiewicz, Nicolai
Fàbrega Gallego, Cristian
Gràcia Tortadés, Isabel
Cané i Ballart, Carles
Wasisto, Hutomo Suryo
Waag, Andreas
Prades García, Juan Daniel
author_role author
author2 Markiewicz, Nicolai
Fàbrega Gallego, Cristian
Gràcia Tortadés, Isabel
Cané i Ballart, Carles
Wasisto, Hutomo Suryo
Waag, Andreas
Prades García, Juan Daniel
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Detectors de gasos
Electrònica de potència
Nanotecnologia
Gas detectors
Power electronics
Nanotechnology
topic Detectors de gasos
Electrònica de potència
Nanotecnologia
Gas detectors
Power electronics
Nanotechnology
description A film of gas sensitive ZnO nanoparticles has been coupled with a low-power micro light plate (μLP) to achieve a NO2-parts-per-billion conductometric gas sensor operating at room temperature. In this μLP configuration, an InGaN-based LED (emitting at 455 nm) is integrated at a few hundred nanometers distance from the sensor material, leading to sensor photoactivation with well controlled, uniform, and high irradiance conditions, and very low electrical power needs. The response curves to different NO2 concentrations as a function of the irradiance displayed a bell-like shape. Responses of 20% to 25 ppb of NO2 were already observed at irradiances of 5 mWatts·cm-2 (applying an electrical power as low as 30 μW). In the optimum illumination conditions (around 60 mWatts·cm-2, or 200 μW of electric power), responses of 94% to 25 ppb were achieved, corresponding to a lower detection limit of 1 ppb of NO2. Higher irradiance values worsened the sensor response in the parts-per-billion range of NO2 concentrations. The responses to other gases such as NH3, CO, and CH4 were much smaller, showing a certain selectivity toward NO2. The effects of humidity on the sensor response are also discussed.
publishDate 2019
dc.date.none.fl_str_mv 2019
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/2445/130016
url https://hdl.handle.net/2445/130016
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1021/acssensors.9b00150
ACS Sensors, 2019, vol. in press
https://doi.org/10.1021/acssensors.9b00150
info:eu-repo/grantAgreement/EC/FP7/336917
dc.rights.none.fl_str_mv (c) American Chemical Society , 2019
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Chemical Society , 2019
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 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:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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