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Modelling of carbon nanotube-based devices: from nanoFETs to THz emitters - art. no. 632808

Di Carlo, Aldo and Pecchia, Alessandro and Petrolati, Eleonora and Paoloni, Claudio (2006) Modelling of carbon nanotube-based devices: from nanoFETs to THz emitters - art. no. 632808. In: Nanomodeling II. SPIE-INT SOC OPTICAL ENGINEERING, BELLINGHAM, p. 32808. ISBN 0-8194-6407-4

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Abstract

In the first part of the present contribution, we will report on transport calculations of nanoscaled devices based on Carbon Nanotubes obtained via self-consistent density-functional method coupled with non-equilibrium Greens function approaches. In particular, density functional tight-binding techniques are very promising due to their intrinsic efficiency. This scheme allows treatment of systems comprising a large number of atoms and enables the computation of the current flowing between two or more contacts in a fully self-consistent manner with the open boundary conditions that naturally arise in transport problems. We will give a description of this methodology and application to field effect transistor based on Carbon nanotubes. The advances in manufacturing technology are allowing new opportunities even for vacuum electron devices producing radio-frequency radiation. Modem micro and nano-technologies can overcome the typical severe limitations of vacuum tube devices. As an example, Carbon Nanotubes used as cold emitters in micron-scaled triodes allow for frequency generation up to THz region. The purpose of the second part of this contribution will be a description of the modelling of Carbon Nanotube based vacuum devices such as triodes. We will present the calculation of important figures of merit and possible realizations.

Item Type: Contribution in Book/Report/Proceedings
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
ID Code: 56544
Deposited By: ep_importer_pure
Deposited On: 07 Aug 2012 14:16
Refereed?: No
Published?: Published
Last Modified: 10 Apr 2014 01:18
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/56544

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