Highly Sensitive NH<sub>3</sub> Sensors Using CVD and Epitaxial Graphene Functionalised with Vanadium(V) Oxide: A Comparative Study

Highly Sensitive NH<sub>3</sub> Sensors Using CVD and Epitaxial Graphene Functionalised with Vanadium(V) Oxide: A Comparative Study

Exceptionally sensitive and selective graphene-based chemiresistive gas sensors were produced as a result of graphene functionalisation with a sub-nanometer V<sub>2</sub>O<sub>5</sub> layer by using the method of pulsed laser deposition. Two different types of graphene were u...

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Main Authors: Margus Kodu, Artjom Berholts, Tauno Kahro, Jens Eriksson, Rositsa Yakimova, Tea Avarmaa, Indrek Renge, Harry Alles, Raivo Jaaniso
Format: Article
Language:English
Published: MDPI AG 2018-11-01
Series:Proceedings
Subjects:
ammonia
CVD graphene
epitaxial graphene on SiC
gas sensor
pulsed laser deposition
selectivity
single layer graphene
UV light activation
vanadium(V) oxide
Online Access:https://www.mdpi.com/2504-3900/2/13/854
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spelling doaj-b224ee0e8f344e43a24eff694b0b8d032020-11-24T21:48:18ZengMDPI AGProceedings2504-39002018-11-0121385410.3390/proceedings2130854proceedings2130854Highly Sensitive NH<sub>3</sub> Sensors Using CVD and Epitaxial Graphene Functionalised with Vanadium(V) Oxide: A Comparative StudyMargus Kodu0Artjom Berholts1Tauno Kahro2Jens Eriksson3Rositsa Yakimova4Tea Avarmaa5Indrek Renge6Harry Alles7Raivo Jaaniso8Institute of Physics, University of Tartu, W. Ostwald Street 1, EE50411 Tartu, EstoniaInstitute of Physics, University of Tartu, W. Ostwald Street 1, EE50411 Tartu, EstoniaInstitute of Physics, University of Tartu, W. Ostwald Street 1, EE50411 Tartu, EstoniaDepartment of Physics, Chemistry and Biology, Linköping University, 58183 Linköping, SwedenDepartment of Physics, Chemistry and Biology, Linköping University, 58183 Linköping, SwedenInstitute of Physics, University of Tartu, W. Ostwald Street 1, EE50411 Tartu, EstoniaInstitute of Physics, University of Tartu, W. Ostwald Street 1, EE50411 Tartu, EstoniaInstitute of Physics, University of Tartu, W. Ostwald Street 1, EE50411 Tartu, EstoniaInstitute of Physics, University of Tartu, W. Ostwald Street 1, EE50411 Tartu, EstoniaExceptionally sensitive and selective graphene-based chemiresistive gas sensors were produced as a result of graphene functionalisation with a sub-nanometer V<sub>2</sub>O<sub>5</sub> layer by using the method of pulsed laser deposition. Two different types of graphene were used—epitaxial graphene on SiC and CVD graphene on Si/SiO<sub>2</sub>—and both showed remarkable enhancement of sensing properties in terms of response and recovery speed, response magnitude and selectiveness towards NH<sub>3</sub> gas. The epitaxial graphene-based sensor was demonstrating the highest relative response towards ammonia amounting to 80% for 0.1 ppm NH<sub>3</sub>.https://www.mdpi.com/2504-3900/2/13/854ammoniaCVD grapheneepitaxial graphene on SiCgas sensorpulsed laser depositionselectivitysingle layer grapheneUV light activationvanadium(V) oxide
collection DOAJ
language English
format Article
sources DOAJ
author Margus Kodu
Artjom Berholts
Tauno Kahro
Jens Eriksson
Rositsa Yakimova
Tea Avarmaa
Indrek Renge
Harry Alles
Raivo Jaaniso
spellingShingle Margus Kodu
Artjom Berholts
Tauno Kahro
Jens Eriksson
Rositsa Yakimova
Tea Avarmaa
Indrek Renge
Harry Alles
Raivo Jaaniso
Highly Sensitive NH<sub>3</sub> Sensors Using CVD and Epitaxial Graphene Functionalised with Vanadium(V) Oxide: A Comparative Study
Proceedings
ammonia
CVD graphene
epitaxial graphene on SiC
gas sensor
pulsed laser deposition
selectivity
single layer graphene
UV light activation
vanadium(V) oxide
author_facet Margus Kodu
Artjom Berholts
Tauno Kahro
Jens Eriksson
Rositsa Yakimova
Tea Avarmaa
Indrek Renge
Harry Alles
Raivo Jaaniso
author_sort Margus Kodu
title Highly Sensitive NH<sub>3</sub> Sensors Using CVD and Epitaxial Graphene Functionalised with Vanadium(V) Oxide: A Comparative Study
title_short Highly Sensitive NH<sub>3</sub> Sensors Using CVD and Epitaxial Graphene Functionalised with Vanadium(V) Oxide: A Comparative Study
title_full Highly Sensitive NH<sub>3</sub> Sensors Using CVD and Epitaxial Graphene Functionalised with Vanadium(V) Oxide: A Comparative Study
title_fullStr Highly Sensitive NH<sub>3</sub> Sensors Using CVD and Epitaxial Graphene Functionalised with Vanadium(V) Oxide: A Comparative Study
title_full_unstemmed Highly Sensitive NH<sub>3</sub> Sensors Using CVD and Epitaxial Graphene Functionalised with Vanadium(V) Oxide: A Comparative Study
title_sort highly sensitive nh<sub>3</sub> sensors using cvd and epitaxial graphene functionalised with vanadium(v) oxide: a comparative study
publisher MDPI AG
series Proceedings
issn 2504-3900
publishDate 2018-11-01
description Exceptionally sensitive and selective graphene-based chemiresistive gas sensors were produced as a result of graphene functionalisation with a sub-nanometer V<sub>2</sub>O<sub>5</sub> layer by using the method of pulsed laser deposition. Two different types of graphene were used—epitaxial graphene on SiC and CVD graphene on Si/SiO<sub>2</sub>—and both showed remarkable enhancement of sensing properties in terms of response and recovery speed, response magnitude and selectiveness towards NH<sub>3</sub> gas. The epitaxial graphene-based sensor was demonstrating the highest relative response towards ammonia amounting to 80% for 0.1 ppm NH<sub>3</sub>.
topic ammonia
CVD graphene
epitaxial graphene on SiC
gas sensor
pulsed laser deposition
selectivity
single layer graphene
UV light activation
vanadium(V) oxide
url https://www.mdpi.com/2504-3900/2/13/854
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