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...
Guardado en:
Autores principales: | , , , , , |
---|---|
Formato: | article |
Lenguaje: | EN |
Publicado: |
Nature Portfolio
2017
|
Materias: | |
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 |