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Room temperature nonlinear operation of a graphene-based three-branch nanojunction device with chemical doping

A chemically doped graphene-based three-branch nanojunction device is fabricated on a SiO 2/p-Si substrate, and its nonlinear operation is characterized at room temperature (RT). By polyethyleneimine doping, the fabricated device shows improved field effect mobility of 14 800 and 16 100 cm 2/Vs for...

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Main Authors: Abd. Rahman, Shaharin Fadzli, Kasai, Seiya, Hashim, Abdul Manaf
Format: Article
Published: AIP Publishing 2012
Subjects:
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://eprints.utm.my/id/eprint/33499/
http://dx.doi.org/10.1063/1.4711035
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spelling my.utm.334992018-11-30T06:37:21Z http://eprints.utm.my/id/eprint/33499/ Room temperature nonlinear operation of a graphene-based three-branch nanojunction device with chemical doping Abd. Rahman, Shaharin Fadzli Kasai, Seiya Hashim, Abdul Manaf TK Electrical engineering. Electronics Nuclear engineering A chemically doped graphene-based three-branch nanojunction device is fabricated on a SiO 2/p-Si substrate, and its nonlinear operation is characterized at room temperature (RT). By polyethyleneimine doping, the fabricated device shows improved field effect mobility of 14 800 and 16 100 cm 2/Vs for electron and holes, respectively. The device clearly exhibits nonlinearity in voltage transfer curves at RT. The curvature of the transfer curve can be controlled by using the back gate voltage, and its polarity abruptly switches near the Dirac point because of the carrier type change. The observed behaviour can be quantitatively explained in terms of the difference in the amounts of gate-induced carriers in the two input branches. AIP Publishing 2012-05 Article PeerReviewed Abd. Rahman, Shaharin Fadzli and Kasai, Seiya and Hashim, Abdul Manaf (2012) Room temperature nonlinear operation of a graphene-based three-branch nanojunction device with chemical doping. Applied Physics Letters, 100 (19). pp. 1-3. ISSN 0003-6951 http://dx.doi.org/10.1063/1.4711035 DOI:10.1063/1.4711035
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TK Electrical engineering. Electronics Nuclear engineering
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Abd. Rahman, Shaharin Fadzli
Kasai, Seiya
Hashim, Abdul Manaf
Room temperature nonlinear operation of a graphene-based three-branch nanojunction device with chemical doping
description A chemically doped graphene-based three-branch nanojunction device is fabricated on a SiO 2/p-Si substrate, and its nonlinear operation is characterized at room temperature (RT). By polyethyleneimine doping, the fabricated device shows improved field effect mobility of 14 800 and 16 100 cm 2/Vs for electron and holes, respectively. The device clearly exhibits nonlinearity in voltage transfer curves at RT. The curvature of the transfer curve can be controlled by using the back gate voltage, and its polarity abruptly switches near the Dirac point because of the carrier type change. The observed behaviour can be quantitatively explained in terms of the difference in the amounts of gate-induced carriers in the two input branches.
format Article
author Abd. Rahman, Shaharin Fadzli
Kasai, Seiya
Hashim, Abdul Manaf
author_facet Abd. Rahman, Shaharin Fadzli
Kasai, Seiya
Hashim, Abdul Manaf
author_sort Abd. Rahman, Shaharin Fadzli
title Room temperature nonlinear operation of a graphene-based three-branch nanojunction device with chemical doping
title_short Room temperature nonlinear operation of a graphene-based three-branch nanojunction device with chemical doping
title_full Room temperature nonlinear operation of a graphene-based three-branch nanojunction device with chemical doping
title_fullStr Room temperature nonlinear operation of a graphene-based three-branch nanojunction device with chemical doping
title_full_unstemmed Room temperature nonlinear operation of a graphene-based three-branch nanojunction device with chemical doping
title_sort room temperature nonlinear operation of a graphene-based three-branch nanojunction device with chemical doping
publisher AIP Publishing
publishDate 2012
url http://eprints.utm.my/id/eprint/33499/
http://dx.doi.org/10.1063/1.4711035
_version_ 1643649348059267072
score 13.211869

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