Sensitivity enhancement of flexible gas sensors via conversion of inkjet-printed silver electrodes into porous gold counterparts

Abstract This work describes a facile, mild and general wet chemical method to change the material and the geometry of inkjet-printed interdigitated electrodes (IDEs) thus drastically enhancing the sensitivity of chemiresistive sensors. A novel layer-by-layer chemical method was developed and used t...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Yunnan Fang, Mitra Akbari, Jimmy G. D. Hester, Lauri Sydänheimo, Leena Ukkonen, Manos M. Tentzeris
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2017
Materias:
R
Q
Acceso en línea:https://doaj.org/article/8dac038cbfa547c0a63546cf9b929003
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
id oai:doaj.org-article:8dac038cbfa547c0a63546cf9b929003
record_format dspace
spelling oai:doaj.org-article:8dac038cbfa547c0a63546cf9b9290032021-12-02T12:30:45ZSensitivity enhancement of flexible gas sensors via conversion of inkjet-printed silver electrodes into porous gold counterparts10.1038/s41598-017-09174-52045-2322https://doaj.org/article/8dac038cbfa547c0a63546cf9b9290032017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-09174-5https://doaj.org/toc/2045-2322Abstract This work describes a facile, mild and general wet chemical method to change the material and the geometry of inkjet-printed interdigitated electrodes (IDEs) thus drastically enhancing the sensitivity of chemiresistive sensors. A novel layer-by-layer chemical method was developed and used to uniformly deposit semiconducting single-wall carbon nanotube (SWCNT)-based sensing elements on a Kapton® substrate. Flexible chemiresistive sensors were then fabricated by inkjet-printing fine-featured silver IDEs on top of the sensing elements. A mild and facile two-step process was employed to convert the inkjet-printed dense silver IDEs into their highly porous gold counterparts under ambient conditions without losing the IDE-substrate adhesion. A proof-of-concept gas sensor equipped with the resulting porous gold IDEs featured a sensitivity to diethyl ethylphosphonate (DEEP, a simulant of the nerve agent sarin) of at least 5 times higher than a similar sensor equipped with the original dense silver IDEs, which suggested that the electrode material and/or the Schottky contacts between the electrodes and the SWCNTs might have played an important role in the gas sensing process.Yunnan FangMitra AkbariJimmy G. D. HesterLauri SydänheimoLeena UkkonenManos M. TentzerisNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Yunnan Fang
Mitra Akbari
Jimmy G. D. Hester
Lauri Sydänheimo
Leena Ukkonen
Manos M. Tentzeris
Sensitivity enhancement of flexible gas sensors via conversion of inkjet-printed silver electrodes into porous gold counterparts
description Abstract This work describes a facile, mild and general wet chemical method to change the material and the geometry of inkjet-printed interdigitated electrodes (IDEs) thus drastically enhancing the sensitivity of chemiresistive sensors. A novel layer-by-layer chemical method was developed and used to uniformly deposit semiconducting single-wall carbon nanotube (SWCNT)-based sensing elements on a Kapton® substrate. Flexible chemiresistive sensors were then fabricated by inkjet-printing fine-featured silver IDEs on top of the sensing elements. A mild and facile two-step process was employed to convert the inkjet-printed dense silver IDEs into their highly porous gold counterparts under ambient conditions without losing the IDE-substrate adhesion. A proof-of-concept gas sensor equipped with the resulting porous gold IDEs featured a sensitivity to diethyl ethylphosphonate (DEEP, a simulant of the nerve agent sarin) of at least 5 times higher than a similar sensor equipped with the original dense silver IDEs, which suggested that the electrode material and/or the Schottky contacts between the electrodes and the SWCNTs might have played an important role in the gas sensing process.
format article
author Yunnan Fang
Mitra Akbari
Jimmy G. D. Hester
Lauri Sydänheimo
Leena Ukkonen
Manos M. Tentzeris
author_facet Yunnan Fang
Mitra Akbari
Jimmy G. D. Hester
Lauri Sydänheimo
Leena Ukkonen
Manos M. Tentzeris
author_sort Yunnan Fang
title Sensitivity enhancement of flexible gas sensors via conversion of inkjet-printed silver electrodes into porous gold counterparts
title_short Sensitivity enhancement of flexible gas sensors via conversion of inkjet-printed silver electrodes into porous gold counterparts
title_full Sensitivity enhancement of flexible gas sensors via conversion of inkjet-printed silver electrodes into porous gold counterparts
title_fullStr Sensitivity enhancement of flexible gas sensors via conversion of inkjet-printed silver electrodes into porous gold counterparts
title_full_unstemmed Sensitivity enhancement of flexible gas sensors via conversion of inkjet-printed silver electrodes into porous gold counterparts
title_sort sensitivity enhancement of flexible gas sensors via conversion of inkjet-printed silver electrodes into porous gold counterparts
publisher Nature Portfolio
publishDate 2017
url https://doaj.org/article/8dac038cbfa547c0a63546cf9b929003
work_keys_str_mv AT yunnanfang sensitivityenhancementofflexiblegassensorsviaconversionofinkjetprintedsilverelectrodesintoporousgoldcounterparts
AT mitraakbari sensitivityenhancementofflexiblegassensorsviaconversionofinkjetprintedsilverelectrodesintoporousgoldcounterparts
AT jimmygdhester sensitivityenhancementofflexiblegassensorsviaconversionofinkjetprintedsilverelectrodesintoporousgoldcounterparts
AT laurisydanheimo sensitivityenhancementofflexiblegassensorsviaconversionofinkjetprintedsilverelectrodesintoporousgoldcounterparts
AT leenaukkonen sensitivityenhancementofflexiblegassensorsviaconversionofinkjetprintedsilverelectrodesintoporousgoldcounterparts
AT manosmtentzeris sensitivityenhancementofflexiblegassensorsviaconversionofinkjetprintedsilverelectrodesintoporousgoldcounterparts
_version_ 1718394347542544384