Effect of light activation on chemical gas sensors based on aligned nanowires

C. Baratto; V. Golovanova; G. Faglia; Thi Thanh Le Dang; H. Hakola; T. Niemi; N. Tkachenko; B. Nazarchurk; V. Golovanov

doi:10.1109/SENSORS47125.2020.9278839

Effect of light activation on chemical gas sensors based on aligned nanowires

C. Baratto, V. Golovanova, G. Faglia, Thi Thanh Le Dang, H. Hakola, T. Niemi, N. Tkachenko, B. Nazarchurk, V. Golovanov

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

Abstract

We investigated the effect of light activation on the gas sensors based on aligned nanowires (NWs). Due to almost monocrystalline perfection, NWs exhibit excellent chemical and thermal stability that makes them superior to polycrystalline thin-film sensors. Nanowires were aligned in two different ways: using Langmuir-Blodgett technique on a chip with electrodes being two microns apart, and using hydrothermal growth procedure to obtain inter-crossed nanowires. Our objective was to fabricate multiple aligned nanowire sensors that could mimic the advantages of a single NW sensors, but benefiting from a macroscopic alignment procedure that avoid the use of lithography for making contacts on a single nanowire. In the present study, we investigated the effects of illumination wavelength (sub and supra band-gap) on the sensing capabilities of the developed structures at room temperature. Light activated devices were found effective for NO2 sensing, while no interference to ethanol and relative humidity was observed.

Original language	English
Title of host publication	IEEE Sensors, SENSORS 2020 - Conference Proceedings
Publisher	IEEE
Number of pages	4
ISBN (Electronic)	9781728168012
ISBN (Print)	9781728168029
DOIs	https://doi.org/10.1109/SENSORS47125.2020.9278839
Publication status	Published - 2020
Publication type	A4 Article in conference proceedings
Event	IEEE SENSORS - Virtual, Rotterdam, Netherlands Duration: 25 Oct 2020 → 28 Oct 2020

Publication series

Name	Proceedings of IEEE Sensors
Volume	2020-October
ISSN (Print)	1930-0395
ISSN (Electronic)	2168-9229

Conference

Conference	IEEE SENSORS
Country/Territory	Netherlands
City	Virtual, Rotterdam
Period	25/10/20 → 28/10/20

Keywords

aligned NWs
gas sensing
light activation
NO
ZnO

Publication forum classification

Publication forum level 1

ASJC Scopus subject areas

Electrical and Electronic Engineering

Access to Document

10.1109/SENSORS47125.2020.9278839

Chemistry Labs for optical spectroscopy, analysis, and synthesis
Ruoko, T.-P. (Contact) & Efimov, A. (Contact)
Materials Science and Environmental Engineering
Facility/equipment: Facility

Cite this

Baratto, C., Golovanova, V., Faglia, G., Le Dang, T. T., Hakola, H., Niemi, T., Tkachenko, N., Nazarchurk, B., & Golovanov, V. (2020). Effect of light activation on chemical gas sensors based on aligned nanowires. In IEEE Sensors, SENSORS 2020 - Conference Proceedings Article 9278839 (Proceedings of IEEE Sensors; Vol. 2020-October). IEEE. https://doi.org/10.1109/SENSORS47125.2020.9278839

@inproceedings{579870459d774400bf671ed68dce2aa6,

title = "Effect of light activation on chemical gas sensors based on aligned nanowires",

abstract = "We investigated the effect of light activation on the gas sensors based on aligned nanowires (NWs). Due to almost monocrystalline perfection, NWs exhibit excellent chemical and thermal stability that makes them superior to polycrystalline thin-film sensors. Nanowires were aligned in two different ways: using Langmuir-Blodgett technique on a chip with electrodes being two microns apart, and using hydrothermal growth procedure to obtain inter-crossed nanowires. Our objective was to fabricate multiple aligned nanowire sensors that could mimic the advantages of a single NW sensors, but benefiting from a macroscopic alignment procedure that avoid the use of lithography for making contacts on a single nanowire. In the present study, we investigated the effects of illumination wavelength (sub and supra band-gap) on the sensing capabilities of the developed structures at room temperature. Light activated devices were found effective for NO2 sensing, while no interference to ethanol and relative humidity was observed. ",

keywords = "aligned NWs, gas sensing, light activation, NO, ZnO",

author = "C. Baratto and V. Golovanova and G. Faglia and {Le Dang}, {Thi Thanh} and H. Hakola and T. Niemi and N. Tkachenko and B. Nazarchurk and V. Golovanov",

note = "JUFOID=57485 Funding Information: This work was supported by NATO SPS MYP project NANEOS, Grant No. 985043. V.G. thanks Project HPC-EUROPA3 (INFRAIA-2016-1-730897) for the support. Publisher Copyright: {\textcopyright} 2020 IEEE.; IEEE SENSORS ; Conference date: 25-10-2020 Through 28-10-2020",

year = "2020",

doi = "10.1109/SENSORS47125.2020.9278839",

language = "English",

isbn = "9781728168029",

series = "Proceedings of IEEE Sensors",

publisher = "IEEE",

booktitle = "IEEE Sensors, SENSORS 2020 - Conference Proceedings",

address = "United States",

}

Baratto, C, Golovanova, V, Faglia, G, Le Dang, TT, Hakola, H, Niemi, T, Tkachenko, N, Nazarchurk, B & Golovanov, V 2020, Effect of light activation on chemical gas sensors based on aligned nanowires. in IEEE Sensors, SENSORS 2020 - Conference Proceedings., 9278839, Proceedings of IEEE Sensors, vol. 2020-October, IEEE, IEEE SENSORS, Virtual, Rotterdam, Netherlands, 25/10/20. https://doi.org/10.1109/SENSORS47125.2020.9278839

Effect of light activation on chemical gas sensors based on aligned nanowires. / Baratto, C.; Golovanova, V.; Faglia, G. et al.
IEEE Sensors, SENSORS 2020 - Conference Proceedings. IEEE, 2020. 9278839 (Proceedings of IEEE Sensors; Vol. 2020-October).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

TY - GEN

T1 - Effect of light activation on chemical gas sensors based on aligned nanowires

AU - Baratto, C.

AU - Golovanova, V.

AU - Faglia, G.

AU - Le Dang, Thi Thanh

AU - Hakola, H.

AU - Niemi, T.

AU - Tkachenko, N.

AU - Nazarchurk, B.

AU - Golovanov, V.

N1 - JUFOID=57485 Funding Information: This work was supported by NATO SPS MYP project NANEOS, Grant No. 985043. V.G. thanks Project HPC-EUROPA3 (INFRAIA-2016-1-730897) for the support. Publisher Copyright: © 2020 IEEE.

PY - 2020

Y1 - 2020

N2 - We investigated the effect of light activation on the gas sensors based on aligned nanowires (NWs). Due to almost monocrystalline perfection, NWs exhibit excellent chemical and thermal stability that makes them superior to polycrystalline thin-film sensors. Nanowires were aligned in two different ways: using Langmuir-Blodgett technique on a chip with electrodes being two microns apart, and using hydrothermal growth procedure to obtain inter-crossed nanowires. Our objective was to fabricate multiple aligned nanowire sensors that could mimic the advantages of a single NW sensors, but benefiting from a macroscopic alignment procedure that avoid the use of lithography for making contacts on a single nanowire. In the present study, we investigated the effects of illumination wavelength (sub and supra band-gap) on the sensing capabilities of the developed structures at room temperature. Light activated devices were found effective for NO2 sensing, while no interference to ethanol and relative humidity was observed.

AB - We investigated the effect of light activation on the gas sensors based on aligned nanowires (NWs). Due to almost monocrystalline perfection, NWs exhibit excellent chemical and thermal stability that makes them superior to polycrystalline thin-film sensors. Nanowires were aligned in two different ways: using Langmuir-Blodgett technique on a chip with electrodes being two microns apart, and using hydrothermal growth procedure to obtain inter-crossed nanowires. Our objective was to fabricate multiple aligned nanowire sensors that could mimic the advantages of a single NW sensors, but benefiting from a macroscopic alignment procedure that avoid the use of lithography for making contacts on a single nanowire. In the present study, we investigated the effects of illumination wavelength (sub and supra band-gap) on the sensing capabilities of the developed structures at room temperature. Light activated devices were found effective for NO2 sensing, while no interference to ethanol and relative humidity was observed.

KW - aligned NWs

KW - gas sensing

KW - light activation

KW - NO

KW - ZnO

U2 - 10.1109/SENSORS47125.2020.9278839

DO - 10.1109/SENSORS47125.2020.9278839

M3 - Conference contribution

AN - SCOPUS:85098715867

SN - 9781728168029

T3 - Proceedings of IEEE Sensors

BT - IEEE Sensors, SENSORS 2020 - Conference Proceedings

PB - IEEE

T2 - IEEE SENSORS

Y2 - 25 October 2020 through 28 October 2020

ER -

Effect of light activation on chemical gas sensors based on aligned nanowires

Abstract

Publication series

Conference

Keywords

Publication forum classification

ASJC Scopus subject areas

Access to Document

Fingerprint

Equipment

Chemistry Labs for optical spectroscopy, analysis, and synthesis

Cite this