8/2/2019 Ac Performance of Nano Electronics(490)

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AC PERFORMANCE OF NANO ELECTRONICS

Abstract

We present phenomenological predictions for the cutoff frequency of

carbon nanotube transistors. We also present predictionsof the effectsparasitic capacitances on AC nanotube transistor performance.Theinfluenceof quantum capacitance, kinetic inductance, and balli stic

transport on the high-frequencyproperties of nanotube transistors is

analyzed. We discuss the challenges ofimpedance matching for acnano-electronics in general, and show how integrated nanosystems can solve

this challenge.

Ourcalculations show tha t carbon nano-electronics may be

faster than con- vent ional Si, SiGe, GaAs, or InPsemiconductor

technologies. We predict a cutof frequency of 80 GHz/

L,

where L is thegate length inmicrons, opening up the possibility ofa ballistic THznanotube transistor