Browsing by Author "Abdelmalek Mouatsi"

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    Modeling ofsub-bandanddiametereffectincarrier concentration ofCNTFET
    (Université de M'sila, 2021) Abdelmalek Mouatsi; MimiaMarir-Benabbas
    Carbon nanotubes(CNTs)havebeenseenasapotentiallyfuturematerialtoprovidean ultrasmall device(CNTFET(CarbonNanotubeFieldEffectTransistor)).Therefore,the studiesofsub-bandseffectsareneededinordertofindtheenhancementofcarrier transport inCNTFET. Also inthispaperthebandstructureoftherolled-upnanotubecanbeobtainedby zone-foldingfromthebandstructureofthegraphenesheet.Thismethodisusedinthis work andwesimulatedandanalyzedthebandstructureofcarbonnanotube.Wepresent analytical modelingofcarrierconcentrationinazigzagsemiconductingofcarbon nanotube fieldeffecttransistor(CNFET)usingthedispersionrelation E(k) (thefirstthree sub-bands)andgiventhedensityofstates(DOS),thecarrierconcentrationisobtained based onanumericalmethodasanalternativetotheusualFermi–Dirac integrals.Inorder to findtheinfluenceofthefirstthreesub-bandsenergyanddiameter dt of CNTinnon- degenerateanddegenerateregionofthecarrierconcentrationinCNTFET.Theresults obtainedshowedthatthediameterandtheenergyofsub-bandhaveasignificantimpact on thecarrierconcentrationofCNTFET