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HSPICE implementation of a numerically efficient model of CNT transistor

HSPICE implementation of a numerically efficient model of CNT transistor
HSPICE implementation of a numerically efficient model of CNT transistor
This paper presents the algorithms of an implementation of a numerically efficient carbon nanotube transistor (CNT) model in HSPICE. The model is derived from cubic spline non-linear approximation of the non-equilibrium mobile charge density. The spline algorithm exploits a rapid and accurate solution of the numerical relationship between the charge density and the self-consistent voltage, which results in the acceleration of deriving the current through the channel without losing much accuracy. The output I-V characteristics of the proposed model have been compared with those of a recent HSPICE implementation of the Stanford CNT model and published experimental I-V curves. The results show superior accuracy of the proposed model while maintaining similar CPU time performance. Two versions of the HSPICE macromodel implementation have been developed and validated, one to reflect ballistic transport only and another with non-ballistic effects. To further validate the model a complementary logic inverter has also been implemented using the proposed technique and simulated in HSPICE.
Kazmierski, Tom
a97d7958-40c3-413f-924d-84545216092a
Zhou, Dafeng
fd16a287-48a9-4cfe-983b-f74aa7805d0f
Al-Hashimi, Bashir
0b29c671-a6d2-459c-af68-c4614dce3b5d
Kazmierski, Tom
a97d7958-40c3-413f-924d-84545216092a
Zhou, Dafeng
fd16a287-48a9-4cfe-983b-f74aa7805d0f
Al-Hashimi, Bashir
0b29c671-a6d2-459c-af68-c4614dce3b5d

Kazmierski, Tom, Zhou, Dafeng and Al-Hashimi, Bashir (2009) HSPICE implementation of a numerically efficient model of CNT transistor. Forum on Specification and Design Languages (FDL 2009), Germany. 22 - 24 Sep 2009.

Record type: Conference or Workshop Item (Other)

Abstract

This paper presents the algorithms of an implementation of a numerically efficient carbon nanotube transistor (CNT) model in HSPICE. The model is derived from cubic spline non-linear approximation of the non-equilibrium mobile charge density. The spline algorithm exploits a rapid and accurate solution of the numerical relationship between the charge density and the self-consistent voltage, which results in the acceleration of deriving the current through the channel without losing much accuracy. The output I-V characteristics of the proposed model have been compared with those of a recent HSPICE implementation of the Stanford CNT model and published experimental I-V curves. The results show superior accuracy of the proposed model while maintaining similar CPU time performance. Two versions of the HSPICE macromodel implementation have been developed and validated, one to reflect ballistic transport only and another with non-ballistic effects. To further validate the model a complementary logic inverter has also been implemented using the proposed technique and simulated in HSPICE.

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More information

Submitted date: 22 September 2009
Additional Information: Event Dates: September 22-24, 2009
Venue - Dates: Forum on Specification and Design Languages (FDL 2009), Germany, 2009-09-22 - 2009-09-24
Organisations: Electronic & Software Systems, EEE

Identifiers

Local EPrints ID: 267767
URI: https://eprints.soton.ac.uk/id/eprint/267767
PURE UUID: f6c934ee-852b-4381-84df-b4cccfb400d5

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Date deposited: 10 Aug 2009 14:59
Last modified: 18 Jul 2017 07:00

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Contributors

Author: Tom Kazmierski
Author: Dafeng Zhou
Author: Bashir Al-Hashimi

University divisions

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