Cargando…

An analytical approach to evaluate the performance of graphene and carbon nanotubes for NH(3) gas sensor applications

Carbon, in its variety of allotropes, especially graphene and carbon nanotubes (CNTs), holds great potential for applications in variety of sensors because of dangling π-bonds that can react with chemical elements. In spite of their excellent features, carbon nanotubes (CNTs) and graphene have not b...

Descripción completa

Detalles Bibliográficos
Autores principales: Akbari, Elnaz, Arora, Vijay Kumar, Enzevaee, Aria, Ahmadi, Mohamad T, Saeidmanesh, Mehdi, Khaledian, Mohsen, Karimi, Hediyeh, Yusof, Rubiyah
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4077376/
https://www.ncbi.nlm.nih.gov/pubmed/24991510
http://dx.doi.org/10.3762/bjnano.5.85
_version_ 1782323592905621504
author Akbari, Elnaz
Arora, Vijay Kumar
Enzevaee, Aria
Ahmadi, Mohamad T
Saeidmanesh, Mehdi
Khaledian, Mohsen
Karimi, Hediyeh
Yusof, Rubiyah
author_facet Akbari, Elnaz
Arora, Vijay Kumar
Enzevaee, Aria
Ahmadi, Mohamad T
Saeidmanesh, Mehdi
Khaledian, Mohsen
Karimi, Hediyeh
Yusof, Rubiyah
author_sort Akbari, Elnaz
collection PubMed
description Carbon, in its variety of allotropes, especially graphene and carbon nanotubes (CNTs), holds great potential for applications in variety of sensors because of dangling π-bonds that can react with chemical elements. In spite of their excellent features, carbon nanotubes (CNTs) and graphene have not been fully exploited in the development of the nanoelectronic industry mainly because of poor understanding of the band structure of these allotropes. A mathematical model is proposed with a clear purpose to acquire an analytical understanding of the field-effect-transistor (FET) based gas detection mechanism. The conductance change in the CNT/graphene channel resulting from the chemical reaction between the gas and channel surface molecules is emphasized. NH(3) has been used as the prototype gas to be detected by the nanosensor and the corresponding current–voltage (I–V) characteristics of the FET-based sensor are studied. A graphene-based gas sensor model is also developed. The results from graphene and CNT models are compared with the experimental data. A satisfactory agreement, within the uncertainties of the experiments, is obtained. Graphene-based gas sensor exhibits higher conductivity compared to that of CNT-based counterpart for similar ambient conditions.
format Online
Article
Text
id pubmed-4077376
institution National Center for Biotechnology Information
language English
publishDate 2014
publisher Beilstein-Institut
record_format MEDLINE/PubMed
spelling pubmed-40773762014-07-02 An analytical approach to evaluate the performance of graphene and carbon nanotubes for NH(3) gas sensor applications Akbari, Elnaz Arora, Vijay Kumar Enzevaee, Aria Ahmadi, Mohamad T Saeidmanesh, Mehdi Khaledian, Mohsen Karimi, Hediyeh Yusof, Rubiyah Beilstein J Nanotechnol Full Research Paper Carbon, in its variety of allotropes, especially graphene and carbon nanotubes (CNTs), holds great potential for applications in variety of sensors because of dangling π-bonds that can react with chemical elements. In spite of their excellent features, carbon nanotubes (CNTs) and graphene have not been fully exploited in the development of the nanoelectronic industry mainly because of poor understanding of the band structure of these allotropes. A mathematical model is proposed with a clear purpose to acquire an analytical understanding of the field-effect-transistor (FET) based gas detection mechanism. The conductance change in the CNT/graphene channel resulting from the chemical reaction between the gas and channel surface molecules is emphasized. NH(3) has been used as the prototype gas to be detected by the nanosensor and the corresponding current–voltage (I–V) characteristics of the FET-based sensor are studied. A graphene-based gas sensor model is also developed. The results from graphene and CNT models are compared with the experimental data. A satisfactory agreement, within the uncertainties of the experiments, is obtained. Graphene-based gas sensor exhibits higher conductivity compared to that of CNT-based counterpart for similar ambient conditions. Beilstein-Institut 2014-05-28 /pmc/articles/PMC4077376/ /pubmed/24991510 http://dx.doi.org/10.3762/bjnano.5.85 Text en Copyright © 2014, Akbari et al. https://creativecommons.org/licenses/by/2.0https://www.beilstein-journals.org/bjnano/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The license is subject to the Beilstein Journal of Nanotechnology terms and conditions: (https://www.beilstein-journals.org/bjnano/terms)
spellingShingle Full Research Paper
Akbari, Elnaz
Arora, Vijay Kumar
Enzevaee, Aria
Ahmadi, Mohamad T
Saeidmanesh, Mehdi
Khaledian, Mohsen
Karimi, Hediyeh
Yusof, Rubiyah
An analytical approach to evaluate the performance of graphene and carbon nanotubes for NH(3) gas sensor applications
title An analytical approach to evaluate the performance of graphene and carbon nanotubes for NH(3) gas sensor applications
title_full An analytical approach to evaluate the performance of graphene and carbon nanotubes for NH(3) gas sensor applications
title_fullStr An analytical approach to evaluate the performance of graphene and carbon nanotubes for NH(3) gas sensor applications
title_full_unstemmed An analytical approach to evaluate the performance of graphene and carbon nanotubes for NH(3) gas sensor applications
title_short An analytical approach to evaluate the performance of graphene and carbon nanotubes for NH(3) gas sensor applications
title_sort analytical approach to evaluate the performance of graphene and carbon nanotubes for nh(3) gas sensor applications
topic Full Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4077376/
https://www.ncbi.nlm.nih.gov/pubmed/24991510
http://dx.doi.org/10.3762/bjnano.5.85
work_keys_str_mv AT akbarielnaz ananalyticalapproachtoevaluatetheperformanceofgrapheneandcarbonnanotubesfornh3gassensorapplications
AT aroravijaykumar ananalyticalapproachtoevaluatetheperformanceofgrapheneandcarbonnanotubesfornh3gassensorapplications
AT enzevaeearia ananalyticalapproachtoevaluatetheperformanceofgrapheneandcarbonnanotubesfornh3gassensorapplications
AT ahmadimohamadt ananalyticalapproachtoevaluatetheperformanceofgrapheneandcarbonnanotubesfornh3gassensorapplications
AT saeidmaneshmehdi ananalyticalapproachtoevaluatetheperformanceofgrapheneandcarbonnanotubesfornh3gassensorapplications
AT khaledianmohsen ananalyticalapproachtoevaluatetheperformanceofgrapheneandcarbonnanotubesfornh3gassensorapplications
AT karimihediyeh ananalyticalapproachtoevaluatetheperformanceofgrapheneandcarbonnanotubesfornh3gassensorapplications
AT yusofrubiyah ananalyticalapproachtoevaluatetheperformanceofgrapheneandcarbonnanotubesfornh3gassensorapplications
AT akbarielnaz analyticalapproachtoevaluatetheperformanceofgrapheneandcarbonnanotubesfornh3gassensorapplications
AT aroravijaykumar analyticalapproachtoevaluatetheperformanceofgrapheneandcarbonnanotubesfornh3gassensorapplications
AT enzevaeearia analyticalapproachtoevaluatetheperformanceofgrapheneandcarbonnanotubesfornh3gassensorapplications
AT ahmadimohamadt analyticalapproachtoevaluatetheperformanceofgrapheneandcarbonnanotubesfornh3gassensorapplications
AT saeidmaneshmehdi analyticalapproachtoevaluatetheperformanceofgrapheneandcarbonnanotubesfornh3gassensorapplications
AT khaledianmohsen analyticalapproachtoevaluatetheperformanceofgrapheneandcarbonnanotubesfornh3gassensorapplications
AT karimihediyeh analyticalapproachtoevaluatetheperformanceofgrapheneandcarbonnanotubesfornh3gassensorapplications
AT yusofrubiyah analyticalapproachtoevaluatetheperformanceofgrapheneandcarbonnanotubesfornh3gassensorapplications